/**
* Add Schema.org Microdata in the footer.
*
* Mainly used to embed microdata to front page, posts index page and archives.
*/
function amt_add_jsonld_schemaorg_metadata_head($post, $attachments, $embedded_media, $options)
{
if (apply_filters('amt_exclude_schemaorg_metadata', false)) {
return array();
}
$do_auto_schemaorg = $options["auto_schemaorg"] == "1" ? true : false;
if (!$do_auto_schemaorg) {
return array();
}
// Check if the microdata or the JSON-LD schema.org generator should be used.
if ($options["schemaorg_force_jsonld"] == "0") {
// Here we check for AMP page https://www.ampproject.org/
// For AMP pages, if the Schema.org microdata generator has been enabled,
// we enforce the JSON+LD form instead of microdata.
if ($do_auto_schemaorg && function_exists('is_amp_endpoint') && is_amp_endpoint()) {
// Do nothing and let it proceed with forced generation of JSON+LD Schema.org metadata.
} else {
return array();
}
}
$metadata_arr = array();
// Context
$metadata_arr['@context'] = 'http://schema.org';
// TODO: Check if this is_paged() check is needed. If removed, make sure that titles and descriptions are passed through multipage function.
if (is_paged()) {
//
// Currently we do not support adding Schema.org metadata on
// paged archives, if page number is >=2
//
// NOTE: This refers to an archive or the main page being split up over
// several pages, this does not refer to a Post or Page whose content
// has been divided into pages using the <!--nextpage--> QuickTag.
//
// Multipage content IS processed below.
//
return array();
}
// Custom content override
if (amt_is_custom($post, $options)) {
// Return metadata with:
// add_filter( 'amt_custom_metadata_jsonld_schemaorg', 'my_function', 10, 5 );
// Return an array of meta tags. Array item format: ['key_can_be_whatever'] = '<meta name="foo" content="bar" />'
$metadata_arr = apply_filters('amt_custom_metadata_jsonld_schemaorg', $metadata_arr, $post, $options, $attachments, $embedded_media);
// Default fron tpage displaying the latest posts.
} elseif (amt_is_default_front_page()) {
// On the front page we are adding two top level entities, so we remove
// the existing context, as the entities need to be in an array and each
// array item needs its own context.
unset($metadata_arr['@context']);
// Organization
//
// NOTICE:
// Even if the front page has been set as the source of profile, this
// this does not work with the default front page with the latest posts.
// This is becuase this page does not have an author, which is essential
// for the generated metadata on a page that is supposed to be a profile.
// Therefore, an Organization object is always generated on the default
// front page and it is never treated as a profile page by Add-Meta-Tags.
//
$organization_arr = array();
// Context
$organization_arr['@context'] = 'http://schema.org';
// ID
$organization_arr['@id'] = amt_get_schemaorg_entity_id('organization');
$organization_arr = array_merge($organization_arr, amt_get_jsonld_schemaorg_publisher_array($options));
// mainEntityOfPage
$organization_arr['mainEntityOfPage'] = esc_url(trailingslashit(get_bloginfo('url')));
// Get publisher/mainEntity metatags
// $metadata_arr = array_merge( $metadata_arr, amt_get_schemaorg_publisher_metatags( $options ) );
// WebSite
$website_arr = array();
// Context
$website_arr['@context'] = 'http://schema.org';
// ID
$website_arr['@id'] = amt_get_schemaorg_entity_id('website');
// Type
$website_arr['@type'] = 'WebSite';
// name
$website_arr['name'] = esc_attr(get_bloginfo('name'));
// headline - contains title information
$website_arr['headline'] = esc_attr(amt_get_title_for_metadata($options, $post));
// alternateName (The WordPress tag line is used.)
// TODO: use tag line. Needs feedback!
// url
$website_arr['url'] = esc_url_raw(trailingslashit(get_bloginfo('url')));
// publisher
// $website_arr['publisher'] = array( '@id' => esc_attr(amt_get_schemaorg_entity_id('organization') ) );
// SearchAction
// Scope BEGIN: SearchAction: http://schema.org/SearchAction
// $metadata_arr[] = '<!-- Scope BEGIN: SearchAction -->';
// $metadata_arr[] = '<span itemprop="potentialAction" itemscope itemtype="http://schema.org/SearchAction">';
$website_arr['potentialAction'] = array();
$website_arr['potentialAction']['@type'] = 'SearchAction';
// target
// Scope BEGIN: EntryPoint: http://schema.org/EntryPoint
$website_arr['potentialAction']['target'] = array();
$website_arr['potentialAction']['target']['@type'] = 'EntryPoint';
// urlTemplate
$website_arr['potentialAction']['target']['urlTemplate'] = esc_url_raw(trailingslashit(get_bloginfo('url'))) . '?s={search_term}';
// Scope END: EntryPoint
// $metadata_arr[] = '</span> <!-- Scope END: EntryPoint -->';
// query-input
// Scope BEGIN: PropertyValueSpecification: http://schema.org/PropertyValueSpecification
//$metadata_arr[] = '<span itemprop="query-input" itemscope itemtype="http://schema.org/PropertyValueSpecification">';
$website_arr['potentialAction']['query-input'] = array();
$website_arr['potentialAction']['query-input']['@type'] = 'PropertyValueSpecification';
// valueRequired
$website_arr['potentialAction']['query-input']['valueRequired'] = 'True';
// valueName
$website_arr['potentialAction']['query-input']['valueName'] = 'search_term';
// Scope END: PropertyValueSpecification
// $metadata_arr[] = '</span> <!-- Scope END: PropertyValueSpecification -->';
// Scope END: SearchAction
// $metadata_arr[] = '</span> <!-- Scope END: SearchAction -->';
// Scope END: WebSite
// $metadata_arr[] = '</span> <!-- Scope END: WebSite -->';
$metadata_arr = array($organization_arr, $website_arr);
// Front page using a static page
} elseif (amt_is_static_front_page()) {
// On the front page we are adding two top level entities, so we remove
// the existing context, as the entities need to be in an array and each
// array item needs its own context.
unset($metadata_arr['@context']);
$main_entity_arr = array();
// Context
$main_entity_arr['@context'] = 'http://schema.org';
if ($options['author_profile_source'] == 'frontpage') {
// ID
$main_entity_arr['@id'] = amt_get_schemaorg_entity_id('person');
// Author
// Scope BEGIN: Person: http://schema.org/Person
// $metadata_arr[] = '<!-- Scope BEGIN: Person -->';
// $metadata_arr[] = '<span itemprop="author" itemscope itemtype="http://schema.org/Person"' . amt_get_schemaorg_itemref('person_author') . '>';
// Get author metatags
$main_entity_arr = array_merge($main_entity_arr, amt_get_jsonld_schemaorg_author_array($post->post_author, $options));
// mainEntityOfPage
$main_entity_arr['mainEntityOfPage'] = esc_url(trailingslashit(get_bloginfo('url')));
// Scope END: Person
// $metadata_arr[] = '</span> <!-- Scope END: Person -->';
} else {
// ID
$main_entity_arr['@id'] = amt_get_schemaorg_entity_id('organization');
// Organization
$main_entity_arr = array_merge($main_entity_arr, amt_get_jsonld_schemaorg_publisher_array($options));
// mainEntityOfPage
$main_entity_arr['mainEntityOfPage'] = esc_url(trailingslashit(get_bloginfo('url')));
// Get publisher/mainEntity metatags
// $metadata_arr = array_merge( $metadata_arr, amt_get_schemaorg_publisher_metatags( $options ) );
}
// WebSite
$website_arr = array();
// Context
$website_arr['@context'] = 'http://schema.org';
// ID
$website_arr['@id'] = amt_get_schemaorg_entity_id('website');
// Type
$website_arr['@type'] = 'WebSite';
// name
$website_arr['name'] = esc_attr(get_bloginfo('name'));
// headline - contains title information
$website_arr['headline'] = esc_attr(amt_get_title_for_metadata($options, $post));
// alternateName (The WordPress tag line is used.)
// TODO: use tag line. Needs feedback!
// url
$website_arr['url'] = esc_url_raw(trailingslashit(get_bloginfo('url')));
// if ( $options['author_profile_source'] == 'frontpage' ) {
// author
//$website_arr['author'] = array( '@id' => esc_attr(amt_get_schemaorg_entity_id('person') ) );
// } else {
// publisher
//$website_arr['publisher'] = array( '@id' => esc_attr(amt_get_schemaorg_entity_id('organization') ) );
// }
// SearchAction
// Scope BEGIN: SearchAction: http://schema.org/SearchAction
// $metadata_arr[] = '<!-- Scope BEGIN: SearchAction -->';
// $metadata_arr[] = '<span itemprop="potentialAction" itemscope itemtype="http://schema.org/SearchAction">';
$website_arr['potentialAction'] = array();
$website_arr['potentialAction']['@type'] = 'SearchAction';
// target
// Scope BEGIN: EntryPoint: http://schema.org/EntryPoint
$website_arr['potentialAction']['target'] = array();
$website_arr['potentialAction']['target']['@type'] = 'EntryPoint';
// urlTemplate
$website_arr['potentialAction']['target']['urlTemplate'] = esc_url_raw(trailingslashit(get_bloginfo('url'))) . '?s={search_term}';
// Scope END: EntryPoint
// $metadata_arr[] = '</span> <!-- Scope END: EntryPoint -->';
// query-input
// Scope BEGIN: PropertyValueSpecification: http://schema.org/PropertyValueSpecification
//$metadata_arr[] = '<span itemprop="query-input" itemscope itemtype="http://schema.org/PropertyValueSpecification">';
$website_arr['potentialAction']['query-input'] = array();
$website_arr['potentialAction']['query-input']['@type'] = 'PropertyValueSpecification';
// valueRequired
$website_arr['potentialAction']['query-input']['valueRequired'] = 'True';
// valueName
$website_arr['potentialAction']['query-input']['valueName'] = 'search_term';
// Scope END: PropertyValueSpecification
// $metadata_arr[] = '</span> <!-- Scope END: PropertyValueSpecification -->';
// Scope END: SearchAction
// $metadata_arr[] = '</span> <!-- Scope END: SearchAction -->';
// Scope END: WebSite
// $metadata_arr[] = '</span> <!-- Scope END: WebSite -->';
$metadata_arr = array($main_entity_arr, $website_arr);
// Author archive
} elseif (is_author()) {
// Author object
// NOTE: Inside the author archives `$post->post_author` does not contain the author object.
// In this case the $post (get_queried_object()) contains the author object itself.
// We also can get the author object with the following code. Slug is what WP uses to construct urls.
// $author = get_user_by( 'slug', get_query_var( 'author_name' ) );
// Also, ``get_the_author_meta('....', $author)`` returns nothing under author archives.
// Access user meta with: $author->description, $author->user_email, etc
// $author = get_queried_object();
$author = $post;
// Person
// Scope BEGIN: Person: http://schema.org/Person
// $metadata_arr[] = '<!-- Scope BEGIN: Person -->';
// $metadata_arr[] = '<span itemscope itemtype="http://schema.org/Person"' . amt_get_schemaorg_itemref('person_author') . '>';
$metadata_arr['@type'] = 'Person';
// headline - contains title information
// NOTE: Not supported for person
//$metadata_arr['headline'] = esc_attr( amt_get_title_for_metadata($options, $author) );
// Get author metatags
// $metadata_arr = array_merge( $metadata_arr, amt_get_schemaorg_author_metatags( $author->ID, $options ) );
$metadata_arr = array_merge($metadata_arr, amt_get_jsonld_schemaorg_author_array($author->ID, $options));
// mainEntityOfPage
$metadata_arr['mainEntityOfPage'] = esc_url(get_author_posts_url($author->ID));
// Scope END: Person
// $metadata_arr[] = '</span> <!-- Scope END: Person -->';
} elseif (amt_is_product()) {
// Scope BEGIN: Product: http://schema.org/Product
// $metadata_arr[] = '<!-- Scope BEGIN: Product -->';
// $metadata_arr[] = '<div itemscope itemtype="http://schema.org/Product"' . amt_get_schemaorg_itemref('product') . '>';
// Schema.org type
$metadata_arr['@type'] = 'Product';
// ID
$metadata_arr['@id'] = amt_get_schemaorg_entity_id('product');
// URL - Uses amt_get_permalink_for_multipage()
$metadata_arr['url'] = esc_url_raw(amt_get_permalink_for_multipage($post));
// mainEntityOfPage
$metadata_arr['mainEntityOfPage'] = esc_url(amt_get_permalink_for_multipage($post));
// name
// Note: Contains multipage information through amt_process_paged()
$metadata_arr['name'] = esc_attr(amt_process_paged(strip_tags(get_the_title($post->ID))));
// headline - contains title information
//$metadata_arr['headline'] = esc_attr( amt_get_title_for_metadata($options, $post) );
// Description - We use the description defined by Add-Meta-Tags
// Note: Contains multipage information through amt_process_paged()
$content_desc = amt_get_content_description($post);
//if ( empty($content_desc) ) {
// // Use the post body as the description. Product objects do not support body text.
// // TODO: ERROR here $post_body var does not exist
// $content_desc = sanitize_text_field( amt_sanitize_description( $post_body ) );
//}
if (!empty($content_desc)) {
$metadata_arr['description'] = esc_attr(amt_process_paged($content_desc));
}
// Dates
$metadata_arr['releaseDate'] = esc_attr(amt_iso8601_date($post->post_date));
// Images
$metadata_arr['image'] = array();
// First check if a global image override URL has been entered.
// If yes, use this image URL and override all other images.
$image_data = amt_get_image_data(amt_get_post_meta_image_url($post->ID));
if (!empty($image_data)) {
$image_size = apply_filters('amt_image_size_product', 'full');
$image_meta_array = amt_get_jsonld_schemaorg_image_array($options, $image_data, $size = $image_size);
if (!empty($image_meta_array)) {
$metadata_arr['image'] = array();
$metadata_arr['image'][] = $image_meta_array;
}
//$global_image_override_url = amt_get_post_meta_image_url($post->ID);
//if ( ! empty( $global_image_override_url ) ) {
// $metadata_arr[] = '<!-- Scope BEGIN: ImageObject -->';
// $metadata_arr[] = '<span itemprop="image" itemscope itemtype="http://schema.org/ImageObject">';
// $current_image_obj = array();
// $current_image_obj['@type'] = 'ImageObject';
// $current_image_obj['url'] = esc_url_raw( $global_image_override_url );
// $current_image_obj['contentUrl'] = esc_url_raw( $global_image_override_url );
// $metadata_arr['image'][] = $current_image_obj;
// $metadata_arr[] = '</span> <!-- Scope END: ImageObject -->';
// Further image processing
} else {
// Set to true if any image attachments are found. Use to finally add the default image
// if no image attachments have been found.
$has_images = false;
// Scope BEGIN: ImageObject: http://schema.org/ImageObject
// Image - Featured image is checked first, so that it can be the first associated image.
if (function_exists('has_post_thumbnail') && has_post_thumbnail($post->ID)) {
// Get the image attachment object
$image = get_post(get_post_thumbnail_id($post->ID));
// metadata BEGIN
// $metadata_arr[] = '<!-- Scope BEGIN: ImageObject -->';
// $metadata_arr[] = '<span itemprop="image" itemscope itemtype="http://schema.org/ImageObject">';
// Allow filtering of the image size.
$image_size = apply_filters('amt_image_size_product', 'full');
// Get image metatags.
$metadata_arr['image'][] = amt_get_jsonld_schemaorg_image_array($options, $image, $size = $image_size);
// metadata END
// $metadata_arr[] = '</span> <!-- Scope END: ImageObject -->';
// Images have been found.
$has_images = true;
}
// Scope END: ImageObject
// If no images have been found so far use the default image, if set.
// Scope BEGIN: ImageObject: http://schema.org/ImageObject
if ($has_images === false) {
$image_data = amt_get_default_image_data();
if (!empty($image_data)) {
$image_size = apply_filters('amt_image_size_product', 'full');
$image_meta_array = amt_get_jsonld_schemaorg_image_array($options, $image_data, $size = $image_size);
if (!empty($image_meta_array)) {
$metadata_arr['image'] = array();
$metadata_arr['image'][] = $image_meta_array;
}
}
// $metadata_arr[] = '<!-- Scope BEGIN: ImageObject -->';
// $metadata_arr[] = '<span itemprop="image" itemscope itemtype="http://schema.org/ImageObject">';
//$current_image_obj = array();
//$current_image_obj['@type'] = 'ImageObject';
//$current_image_obj['url'] = esc_url_raw( $options["default_image_url"] );
//$current_image_obj['contentUrl'] = esc_url_raw( $options["default_image_url"] );
//$metadata_arr['image'][] = $current_image_obj;
// $metadata_arr[] = '</span> <!-- Scope END: ImageObject -->';
}
// Scope END: ImageObject
}
// Extend the current metadata with properties of the Product object.
// See: http://schema.org/Product
$metadata_arr = apply_filters('amt_product_data_jsonld_schemaorg', $metadata_arr, $post);
// Scope END: Product
// $metadata_arr[] = '</div> <!-- Scope END: Product -->';
// Filtering of the generated Schema.org metadata
$metadata_arr = apply_filters('amt_jsonld_schemaorg_metadata_product', $metadata_arr);
// Add post body
// Remove last closing '</div>' tag, add post body and re-add the closing div afterwards.
// $closing_product_tag = array_pop($metadata_arr);
// Product objects do not support a 'text' itemprop. We just add a div for now
// for consistency with Article objects.
// TODO: it should allow filtering '<div>'
// $metadata_arr[] = '<div> <!-- Product text body: BEGIN -->';
// $metadata_arr[] = $post_body;
// $metadata_arr[] = '</div> <!-- Product text body: END -->';
// Now add closing tag for Article
// $metadata_arr[] = $closing_product_tag;
// Attachemnts
} elseif (is_attachment()) {
$mime_type = get_post_mime_type($post->ID);
//$attachment_type = strstr( $mime_type, '/', true );
// See why we do not use strstr(): http://www.codetrax.org/issues/1091
$attachment_type = preg_replace('#\\/[^\\/]*$#', '', $mime_type);
// Early metatags - Scope starts
if ('image' == $attachment_type) {
// Scope BEGIN: ImageObject: http://schema.org/ImageObject
// $metadata_arr[] = '<!-- Scope BEGIN: ImageObject -->';
// $metadata_arr[] = '<div itemscope itemtype="http://schema.org/ImageObject"' . amt_get_schemaorg_itemref('attachment_image') . '>';
} elseif ('video' == $attachment_type) {
// Scope BEGIN: VideoObject: http://schema.org/VideoObject
// $metadata_arr[] = '<!-- Scope BEGIN: VideoObject -->';
// $metadata_arr[] = '<div itemscope itemtype="http://schema.org/VideoObject"' . amt_get_schemaorg_itemref('attachment_video') . '>';
// Schema.org type
$metadata_arr['@type'] = 'VideoObject';
} elseif ('audio' == $attachment_type) {
// Scope BEGIN: AudioObject: http://schema.org/AudioObject
// $metadata_arr[] = '<!-- Scope BEGIN: AudioObject -->';
// $metadata_arr[] = '<div itemscope itemtype="http://schema.org/AudioObject"' . amt_get_schemaorg_itemref('attachment_audio') . '>';
// Schema.org type
$metadata_arr['@type'] = 'AudioObject';
} else {
// we do not currently support other attachment types, so we stop processing here
return array();
}
// Metadata common to all attachments
// Do not add a publisher on personal websites (static front page is source of author profile).
if ($options['author_profile_source'] != 'frontpage' || !amt_has_page_on_front()) {
// Publisher
// Scope BEGIN: Organization: http://schema.org/Organization
// $metadata_arr[] = '<!-- Scope BEGIN: Organization -->';
// $metadata_arr[] = '<span itemprop="publisher" itemscope itemtype="http://schema.org/Organization"' . amt_get_schemaorg_itemref('organization') . '>';
// Get publisher metatags
// $metadata_arr = array_merge( $metadata_arr, amt_get_schemaorg_publisher_metatags( $options, $post->post_author ) );
$metadata_arr['publisher'] = amt_get_jsonld_schemaorg_publisher_array($options, $post->post_author);
// Scope END: Organization
// $metadata_arr[] = '</span> <!-- Scope END: Organization -->';
}
// Author
// Scope BEGIN: Person: http://schema.org/Person
// $metadata_arr[] = '<!-- Scope BEGIN: Person -->';
// $metadata_arr[] = '<span itemprop="author" itemscope itemtype="http://schema.org/Person"' . amt_get_schemaorg_itemref('person_author') . '>';
// Get author metatags
$metadata_arr['author'] = amt_get_jsonld_schemaorg_author_array($post->post_author, $options);
// Scope END: Person
// $metadata_arr[] = '</span> <!-- Scope END: Person -->';
// name
$metadata_arr['name'] = esc_attr(strip_tags(get_the_title($post->ID)));
// headline - contains title information
$metadata_arr['headline'] = esc_attr(amt_get_title_for_metadata($options, $post));
// Description - We use the description defined by Add-Meta-Tags
$content_desc = amt_get_content_description($post);
if (!empty($content_desc)) {
$metadata_arr['description'] = esc_attr($content_desc);
}
// Dates
$metadata_arr['datePublished'] = esc_attr(amt_iso8601_date($post->post_date));
$metadata_arr['dateModified'] = esc_attr(amt_iso8601_date($post->post_modified));
$metadata_arr['copyrightYear'] = esc_attr(mysql2date('Y', $post->post_date));
// Language
$metadata_arr['inLanguage'] = esc_attr(str_replace('-', '_', amt_get_language_content($options, $post)));
// Thumbnail
// A featured image is supported by video and audio attachments.
// If one is set, then it is set as the thumbnail of the video/audio object.
if ('video' == $attachment_type || 'audio' == $attachment_type) {
if (function_exists('has_post_thumbnail') && has_post_thumbnail($post->ID)) {
// Thumbnail URL of the featured image
$image_size = apply_filters('amt_image_size_attachment', 'full');
$thumbnail_info = wp_get_attachment_image_src(get_post_thumbnail_id($post->ID), $image_size);
$metadata_arr['thumbnailUrl'] = esc_url_raw($thumbnail_info[0]);
// Currently we do not add a full ImageObject for the attachment's featured image.
// TODO: future
}
}
// mainEntityOfPage
$metadata_arr['mainEntityOfPage'] = esc_url(get_permalink($post->ID));
// Metadata specific to each attachment type
if ('image' == $attachment_type) {
// Allow filtering of the image size.
$image_size = apply_filters('amt_image_size_attachment', 'full');
// Get image metatags. $post is an image object.
$metadata_arr = array_merge($metadata_arr, amt_get_jsonld_schemaorg_image_array($options, $post, $size = $image_size, $is_representative = true));
// Add the post body here
// $metadata_arr[] = $post_body;
// Scope END: ImageObject
// $metadata_arr[] = '</div> <!-- Scope END: ImageObject -->';
} elseif ('video' == $attachment_type) {
// Video specific metatags
// URL (links to image file)
//$metadata_arr['url'] = esc_url_raw( get_permalink( $post->ID ) );
$metadata_arr['url'] = esc_url_raw(wp_get_attachment_url($post->ID));
// sameAs (links to attachment page)
$metadata_arr['sameAs'] = esc_url_raw(get_permalink($post->ID));
$metadata_arr['contentUrl'] = esc_url_raw(wp_get_attachment_url($post->ID));
$metadata_arr['encodingFormat'] = esc_attr($mime_type);
// Required by Google
$metadata_arr['uploadDate'] = esc_attr(amt_iso8601_date($post->post_date));
// Add the post body here
// $metadata_arr[] = $post_body;
// Scope END: VideoObject
// $metadata_arr[] = '</div> <!-- Scope END: VideoObject -->';
} elseif ('audio' == $attachment_type) {
// Audio specific metatags
// URL (links to image file)
//$metadata_arr['url'] = esc_url_raw( get_permalink( $post->ID ) );
$metadata_arr['url'] = esc_url_raw(wp_get_attachment_url($post->ID));
// sameAs (links to attachment page)
$metadata_arr['sameAs'] = esc_url_raw(get_permalink($post->ID));
$metadata_arr['contentUrl'] = esc_url_raw(wp_get_attachment_url($post->ID));
$metadata_arr['encodingFormat'] = esc_attr($mime_type);
// Add the post body here
// $metadata_arr[] = $post_body;
// Scope END: AudioObject
// $metadata_arr[] = '</div> <!-- Scope END: AudioObject -->';
}
// Filtering of the generated Schema.org metadata
$metadata_arr = apply_filters('amt_jsonld_schemaorg_metadata_attachment', $metadata_arr);
// Content
// Posts, pages, custom content types (attachments excluded, caught in previous clause)
// Note: content might be multipage. Process with amt_process_paged() wherever needed.
} elseif (is_singular()) {
// Set main metadata entity. By default this set to Article.
$main_content_object = 'Article';
// Check for Page
// Main entity is set to WebPage on pages
// DEV NOTE: Since many themes already set the WebPage itemscope on the
// body element of the web page, set it to WebPage automatically would
// result in duplicate entities. So this has to be done manually via
// a filtering function.
// if ( is_page() ) {
// $main_content_object = 'WebPage';
// }
// Check for Review
$review_data = amt_get_review_data($post);
if (!empty($review_data)) {
$main_content_object = 'Review';
}
// Allow filtering the main metadata object for content.
$main_content_object = apply_filters('amt_schemaorg_object_main', $main_content_object);
// Scope BEGIN: Article: http://schema.org/Article
// $metadata_arr[] = '<!-- Scope BEGIN: ' . esc_attr($main_content_object) . ' -->';
// $metadata_arr[] = '<div itemscope itemtype="http://schema.org/' . esc_attr($main_content_object) . '"' . amt_get_schemaorg_itemref('content') . '>';
// Schema.org type
$metadata_arr['@type'] = esc_attr($main_content_object);
// Do not add a publisher on personal websites (static front page is source of author profile).
if ($options['author_profile_source'] != 'frontpage' || !amt_has_page_on_front()) {
// Publisher
// Scope BEGIN: Organization: http://schema.org/Organization
// $metadata_arr[] = '<!-- Scope BEGIN: Organization -->';
// $metadata_arr[] = '<span itemprop="publisher" itemscope itemtype="http://schema.org/Organization"' . amt_get_schemaorg_itemref('organization') . '>';
// Get publisher metatags
// $metadata_arr = array_merge( $metadata_arr, amt_get_schemaorg_publisher_metatags( $options, $post->post_author ) );
$metadata_arr['publisher'] = amt_get_jsonld_schemaorg_publisher_array($options, $post->post_author);
// Scope END: Organization
// $metadata_arr[] = '</span> <!-- Scope END: Organization -->';
}
// Author
// Scope BEGIN: Person: http://schema.org/Person
// $metadata_arr[] = '<!-- Scope BEGIN: Person -->';
// $metadata_arr[] = '<span itemprop="author" itemscope itemtype="http://schema.org/Person"' . amt_get_schemaorg_itemref('person_author') . '>';
// Get author metatags
// $metadata_arr = array_merge( $metadata_arr, amt_get_schemaorg_author_metatags( $post->post_author, $options ) );
$metadata_arr['author'] = amt_get_jsonld_schemaorg_author_array($post->post_author, $options);
// Scope END: Person
// $metadata_arr[] = '</span> <!-- Scope END: Person -->';
// URL - Uses amt_get_permalink_for_multipage()
$metadata_arr['url'] = esc_url_raw(amt_get_permalink_for_multipage($post));
// mainEntityOfPage
$metadata_arr['mainEntityOfPage'] = esc_url(amt_get_permalink_for_multipage($post));
// Dates
$metadata_arr['datePublished'] = esc_attr(amt_iso8601_date($post->post_date));
$metadata_arr['dateModified'] = esc_attr(amt_iso8601_date($post->post_modified));
$metadata_arr['copyrightYear'] = esc_attr(mysql2date('Y', $post->post_date));
// Language
$metadata_arr['inLanguage'] = esc_attr(str_replace('-', '_', amt_get_language_content($options, $post)));
// name
// Note: Contains multipage information through amt_process_paged()
$metadata_arr['name'] = esc_attr(amt_process_paged(strip_tags(get_the_title($post->ID))));
// headline - contains title information
$metadata_arr['headline'] = esc_attr(amt_get_title_for_metadata($options, $post));
// Description - We use the description defined by Add-Meta-Tags
// Note: Contains multipage information through amt_process_paged()
$content_desc = amt_get_content_description($post);
if (!empty($content_desc)) {
$metadata_arr['description'] = esc_attr(amt_process_paged($content_desc));
}
/*
// Section: We use the first category as the section
$first_cat = sanitize_text_field( amt_sanitize_keywords( amt_get_first_category($post) ) );
if (!empty($first_cat)) {
$metadata_arr[] = '<meta itemprop="articleSection" content="' . esc_attr( $first_cat ) . '" />';
}
*/
// Add articleSection in Article object only.
if ($main_content_object == 'Article') {
$categories = get_the_category($post->ID);
$categories = apply_filters('amt_post_categories_for_schemaorg', $categories);
foreach ($categories as $cat) {
$section = trim($cat->cat_name);
if (!empty($section) && $cat->slug != 'uncategorized') {
$metadata_arr['articleSection'] = esc_attr($section);
}
}
}
// Add review properties if Review
if ($main_content_object == 'Review') {
// $metadata_arr[] = '<!-- Review Information BEGIN -->';
// $metadata_arr[] = amt_get_review_info_box( $review_data );
// $metadata_arr[] = '<!-- Review Information END -->';
// Reviewed Item
$metadata_arr['itemReviewed'] = array();
$metadata_arr['itemReviewed']['@type'] = esc_attr($review_data['object']);
$metadata_arr['itemReviewed']['name'] = esc_attr($review_data['name']);
$metadata_arr['itemReviewed']['sameAs'] = esc_url_raw($review_data['sameAs']);
// Extra properties of reviewed item
foreach ($review_data['extra'] as $key => $value) {
if (is_array($value)) {
// Add sub entity
// If it is an array, the 'object' property is mandatory
if (!array_key_exists('object', $value)) {
continue;
}
$metadata_arr['itemReviewed'][esc_attr($key)] = array();
$metadata_arr['itemReviewed'][esc_attr($key)]['@type'] = esc_attr($value['object']);
foreach ($value as $subkey => $subvalue) {
if ($subkey != 'object') {
if (in_array($subkey, array('url', 'sameAs'))) {
$metadata_arr['itemReviewed'][esc_attr($key)][esc_attr($subkey)] = esc_url_raw($subvalue);
} else {
$metadata_arr['itemReviewed'][esc_attr($key)][esc_attr($subkey)] = esc_attr($subvalue);
}
}
}
} else {
// Add simple meta element
$metadata_arr['itemReviewed'][esc_attr($key)] = esc_attr($value);
}
}
// Rating
$metadata_arr['reviewRating'] = array();
$metadata_arr['reviewRating']['@type'] = 'Rating';
$metadata_arr['reviewRating']['ratingValue'] = esc_attr($review_data['ratingValue']);
$bestrating = apply_filters('amt_schemaorg_review_bestrating', '5');
$metadata_arr['reviewRating']['bestRating'] = esc_attr($bestrating);
}
// Keywords - We use the keywords defined by Add-Meta-Tags
$keywords = amt_get_content_keywords($post);
if (!empty($keywords)) {
$metadata_arr['keywords'] = esc_attr($keywords);
}
// Referenced Items
$referenced_url_list = amt_get_referenced_items($post);
if (!empty($referenced_url_list)) {
$metadata_arr['referencedItem'] = array();
foreach ($referenced_url_list as $referenced_url) {
$referenced_url = trim($referenced_url);
if (!empty($referenced_url)) {
$metadata_arr['referencedItem'][] = esc_url_raw($referenced_url);
}
}
}
// Images
$metadata_arr['image'] = array();
// First check if a global image override URL has been entered.
// If yes, use this image URL and override all other images.
$image_data = amt_get_image_data(amt_get_post_meta_image_url($post->ID));
if (!empty($image_data)) {
$image_size = apply_filters('amt_image_size_content', 'full');
$image_meta_array = amt_get_jsonld_schemaorg_image_array($options, $image_data, $size = $image_size);
if (!empty($image_meta_array)) {
$metadata_arr['image'] = array();
$metadata_arr['image'][] = $image_meta_array;
}
//$global_image_override_url = amt_get_post_meta_image_url($post->ID);
//if ( ! empty( $global_image_override_url ) ) {
// $metadata_arr[] = '<!-- Scope BEGIN: ImageObject -->';
// $metadata_arr[] = '<span itemprop="image" itemscope itemtype="http://schema.org/ImageObject">';
// $current_image_obj = array();
// $current_image_obj['@type'] = 'ImageObject';
// $current_image_obj['url'] = esc_url_raw( $global_image_override_url );
// $current_image_obj['contentUrl'] = esc_url_raw( $global_image_override_url );
// $metadata_arr['image'][] = $current_image_obj;
// $metadata_arr[] = '<meta itemprop="contentUrl" content="' . esc_url_raw( $global_image_override_url ) . '" />';
// $metadata_arr[] = '</span> <!-- Scope END: ImageObject -->';
// Further image processing
} else {
// Media Limits
$image_limit = amt_metadata_get_image_limit($options);
$video_limit = amt_metadata_get_video_limit($options);
$audio_limit = amt_metadata_get_audio_limit($options);
// Counters
$ic = 0;
// image counter
$vc = 0;
// video counter
$ac = 0;
// audio counter
// We store the featured image ID in this variable so that it can easily be excluded
// when all images are parsed from the $attachments array.
$featured_image_id = 0;
// Set to true if any image attachments are found. Use to finally add the default image
// if no image attachments have been found.
$has_images = false;
// Scope BEGIN: ImageObject: http://schema.org/ImageObject
// Image - Featured image is checked first, so that it can be the first associated image.
if (function_exists('has_post_thumbnail') && has_post_thumbnail($post->ID)) {
// Thumbnail URL
// First add the thumbnail URL of the featured image
$thumbnail_info = wp_get_attachment_image_src(get_post_thumbnail_id($post->ID), 'thumbnail');
$metadata_arr['thumbnailUrl'] = esc_url_raw($thumbnail_info[0]);
// Add full image object for featured image.
// Get the image attachment object
$image = get_post(get_post_thumbnail_id($post->ID));
// metadata BEGIN
// $metadata_arr[] = '<!-- Scope BEGIN: ImageObject -->';
// $metadata_arr[] = '<span itemprop="image" itemscope itemtype="http://schema.org/ImageObject">';
// Allow filtering of the image size.
$image_size = apply_filters('amt_image_size_content', 'full');
// Get image metatags.
// $metadata_arr = array_merge( $metadata_arr, amt_get_schemaorg_image_metatags( $options, $image, $size=$image_size ) );
$metadata_arr['image'][] = amt_get_jsonld_schemaorg_image_array($options, $image, $size = $image_size);
// metadata END
// $metadata_arr[] = '</span> <!-- Scope END: ImageObject -->';
// Finally, set the $featured_image_id
$featured_image_id = get_post_thumbnail_id($post->ID);
// Images have been found.
$has_images = true;
// Increase image counter
$ic++;
}
// Scope END: ImageObject
// Process all attachments and add metatags (featured image will be excluded)
foreach ($attachments as $attachment) {
// Excluded the featured image since
if ($attachment->ID != $featured_image_id) {
$mime_type = get_post_mime_type($attachment->ID);
//$attachment_type = strstr( $mime_type, '/', true );
// See why we do not use strstr(): http://www.codetrax.org/issues/1091
$attachment_type = preg_replace('#\\/[^\\/]*$#', '', $mime_type);
if ('image' == $attachment_type && $ic < $image_limit) {
// metadata BEGIN
// $metadata_arr[] = '<!-- Scope BEGIN: ImageObject -->';
// $metadata_arr[] = '<span itemprop="image" itemscope itemtype="http://schema.org/ImageObject">';
// Allow filtering of the image size.
$image_size = apply_filters('amt_image_size_content', 'full');
// Get image metatags.
// $metadata_arr = array_merge( $metadata_arr, amt_get_schemaorg_image_metatags( $options, $attachment, $size=$image_size ) );
$metadata_arr['image'][] = amt_get_jsonld_schemaorg_image_array($options, $attachment, $size = $image_size);
// metadata END
// $metadata_arr[] = '</span> <!-- Scope END: ImageObject -->';
// Images have been found.
$has_images = true;
// Increase image counter
$ic++;
} elseif ('video' == $attachment_type && $vc < $video_limit) {
// Scope BEGIN: VideoObject: http://schema.org/VideoObject
// $metadata_arr[] = '<!-- Scope BEGIN: VideoObject -->';
// $metadata_arr[] = '<span itemprop="video" itemscope itemtype="http://schema.org/VideoObject">';
// Video specific metatags
// URL (for attachments: links to attachment page)
$current_video_obj = array();
$current_video_obj['@type'] = 'VideoObject';
// URL (links to image file)
//$current_video_obj['url'] = esc_url_raw( get_permalink( $attachment->ID ) );
$current_video_obj['url'] = esc_url_raw(wp_get_attachment_url($attachment->ID));
// sameAs (links to attachment page)
$current_video_obj['sameAs'] = esc_url_raw(get_permalink($attachment->ID));
$current_video_obj['contentUrl'] = esc_url_raw(wp_get_attachment_url($attachment->ID));
$current_video_obj['encodingFormat'] = esc_attr($mime_type);
// name
$current_video_obj['name'] = esc_attr(strip_tags(get_the_title($attachment->ID)));
// Description - We use the description defined by Add-Meta-Tags
$content_desc = amt_get_content_description($attachment);
if (!empty($content_desc)) {
$current_video_obj['description'] = esc_attr($content_desc);
}
// Thumbnail
// A featured image is supported by video and audio attachments.
// If one is set, then it is set as the thumbnail of the video/audio object.
if (function_exists('has_post_thumbnail') && has_post_thumbnail($attachment->ID)) {
// Thumbnail URL of the featured image
$image_size = apply_filters('amt_image_size_content', 'full');
$thumbnail_info = wp_get_attachment_image_src(get_post_thumbnail_id($attachment->ID), $image_size);
$current_video_obj['thumbnailUrl'] = esc_url_raw($thumbnail_info[0]);
// Currently we do not add a full ImageObject for the attachment's featured image.
// TODO: future
}
// uploadDate
$current_video_obj['uploadDate'] = esc_attr(amt_iso8601_date($attachment->post_date));
$metadata_arr['video'][] = $current_video_obj;
// Scope END: VideoObject
// $metadata_arr[] = '</span> <!-- Scope END: VideoObject -->';
// Increase video counter
$vc++;
} elseif ('audio' == $attachment_type && $ac < $audio_limit) {
// Scope BEGIN: AudioObject: http://schema.org/AudioObject
// $metadata_arr[] = '<!-- Scope BEGIN: AudioObject -->';
// $metadata_arr[] = '<span itemprop="audio" itemscope itemtype="http://schema.org/AudioObject">';
// Audio specific metatags
// URL (for attachments: links to attachment page)
$current_audio_obj = array();
$current_audio_obj['@type'] = 'AudioObject';
// URL (links to image file)
//$current_audio_obj['url'] = esc_url_raw( get_permalink( $attachment->ID ) );
$current_audio_obj['url'] = esc_url_raw(wp_get_attachment_url($attachment->ID));
// sameAs (links to attachment page)
$current_audio_obj['sameAs'] = esc_url_raw(get_permalink($attachment->ID));
$current_audio_obj['contentUrl'] = esc_url_raw(wp_get_attachment_url($attachment->ID));
$current_audio_obj['encodingFormat'] = esc_attr($mime_type);
// name
$current_audio_obj['name'] = esc_attr(strip_tags(get_the_title($attachment->ID)));
// Description - We use the description defined by Add-Meta-Tags
$content_desc = amt_get_content_description($attachment);
if (!empty($content_desc)) {
$current_audio_obj['description'] = esc_attr($content_desc);
}
// Thumbnail
// A featured image is supported by video and audio attachments.
// If one is set, then it is set as the thumbnail of the video/audio object.
if (function_exists('has_post_thumbnail') && has_post_thumbnail($attachment->ID)) {
// Thumbnail URL of the featured image
$image_size = apply_filters('amt_image_size_content', 'full');
$thumbnail_info = wp_get_attachment_image_src(get_post_thumbnail_id($attachment->ID), $image_size);
$current_audio_obj['thumbnailUrl'] = esc_url_raw($thumbnail_info[0]);
// Currently we do not add a full ImageObject for the attachment's featured image.
// TODO: future
}
// uploadDate
$current_audio_obj['uploadDate'] = esc_attr(amt_iso8601_date($attachment->post_date));
$metadata_arr['audio'][] = $current_audio_obj;
// Scope END: AudioObject
// $metadata_arr[] = '</span> <!-- Scope END: AudioObject -->';
// Increase audio counter
$ac++;
}
}
}
// Embedded Media
foreach ($embedded_media['images'] as $embedded_item) {
if ($ic == $image_limit) {
break;
}
// Scope BEGIN: ImageObject: http://schema.org/ImageObject
// $metadata_arr[] = '<!-- Scope BEGIN: ImageObject -->';
// $metadata_arr[] = '<span itemprop="image" itemscope itemtype="http://schema.org/ImageObject">';
$current_image_obj = array();
$current_image_obj['@type'] = 'ImageObject';
// name (title)
$current_image_obj['name'] = esc_attr($embedded_item['alt']);
// caption
$current_image_obj['caption'] = esc_attr($embedded_item['alt']);
// alt
$current_image_obj['text'] = esc_attr($embedded_item['alt']);
// URL (links to image file)
//$current_image_obj['url'] = esc_url_raw( $embedded_item['page'] );
$current_image_obj['url'] = esc_url_raw($embedded_item['image']);
// sameAs (links to attachment page)
$current_image_obj['sameAs'] = esc_url_raw($embedded_item['page']);
// thumbnail url
$current_image_obj['thumbnailUrl'] = esc_url_raw($embedded_item['thumbnail']);
// main image
$current_image_obj['contentUrl'] = esc_url_raw($embedded_item['image']);
if (apply_filters('amt_extended_image_tags', true)) {
$current_image_obj['width'] = esc_attr($embedded_item['width']);
$current_image_obj['height'] = esc_attr($embedded_item['height']);
$current_image_obj['encodingFormat'] = 'image/jpeg';
}
// embedURL
$current_image_obj['embedURL'] = esc_url_raw($embedded_item['player']);
$metadata_arr['image'][] = $current_image_obj;
// Scope END: ImageObject
// $metadata_arr[] = '</span> <!-- Scope END: ImageObject -->';
// Images have been found.
$has_images = true;
// Increase image counter
$ic++;
}
foreach ($embedded_media['videos'] as $embedded_item) {
if ($vc == $video_limit) {
break;
}
// Scope BEGIN: VideoObject: http://schema.org/VideoObject
// See: http://googlewebmastercentral.blogspot.gr/2012/02/using-schemaorg-markup-for-videos.html
// See: https://support.google.com/webmasters/answer/2413309?hl=en
// $metadata_arr[] = '<!-- Scope BEGIN: VideoObject -->';
// $metadata_arr[] = '<span itemprop="video" itemscope itemtype="http://schema.org/VideoObject">';
$current_video_obj = array();
// Video Embed URL
$current_video_obj['embedURL'] = esc_url_raw($embedded_item['player']);
// playerType
$current_video_obj['playerType'] = 'application/x-shockwave-flash';
// size
$current_video_obj['width'] = esc_attr($embedded_item['width']);
$current_video_obj['height'] = esc_attr($embedded_item['height']);
$metadata_arr['video'][] = $current_video_obj;
// Scope END: VideoObject
// $metadata_arr[] = '</span> <!-- Scope END: VideoObject -->';
// Increase video counter
$vc++;
}
foreach ($embedded_media['sounds'] as $embedded_item) {
if ($ac == $audio_limit) {
break;
}
// Scope BEGIN: AudioObject: http://schema.org/AudioObject
// $metadata_arr[] = '<!-- Scope BEGIN: AudioObject -->';
// $metadata_arr[] = '<span itemprop="audio" itemscope itemtype="http://schema.org/AudioObject">';
$current_audio_obj = array();
// Audio Embed URL
$current_audio_obj['embedURL'] = esc_url_raw($embedded_item['player']);
// playerType
$current_audio_obj['playerType'] = 'application/x-shockwave-flash';
$metadata_arr['audio'][] = $current_audio_obj;
// Scope END: AudioObject
// $metadata_arr[] = '</span> <!-- Scope END: AudioObject -->';
// Increase audio counter
$ac++;
}
// If no images have been found so far use the default image, if set.
// Scope BEGIN: ImageObject: http://schema.org/ImageObject
if ($has_images === false) {
$image_data = amt_get_default_image_data();
if (!empty($image_data)) {
$image_size = apply_filters('amt_image_size_content', 'full');
$image_meta_array = amt_get_jsonld_schemaorg_image_array($options, $image_data, $size = $image_size);
if (!empty($image_meta_array)) {
$metadata_arr['image'] = array();
$metadata_arr['image'][] = $image_meta_array;
}
}
// $metadata_arr[] = '<!-- Scope BEGIN: ImageObject -->';
// $metadata_arr[] = '<span itemprop="image" itemscope itemtype="http://schema.org/ImageObject">';
$current_image_obj = array();
$current_image_obj['@type'] = 'ImageObject';
$current_image_obj['url'] = esc_url_raw($options["default_image_url"]);
$current_image_obj['contentUrl'] = esc_url_raw($options["default_image_url"]);
$metadata_arr['image'][] = $current_image_obj;
// $metadata_arr[] = '<meta itemprop="contentUrl" content="' . esc_url_raw( $options["default_image_url"] ) . '" />';
// $metadata_arr[] = '</span> <!-- Scope END: ImageObject -->';
}
// Scope END: ImageObject
}
// Article Body
// The article body is added after filtering the generated microdata below.
// TODO: also check: comments, contributor, copyrightHolder, , creator, dateCreated, discussionUrl, editor, version (use post revision if possible)
// Scope END: Article
// $metadata_arr[] = '</div> <!-- Scope END: ' . esc_attr($main_content_object) . ' -->';
// Filtering of the generated Schema.org metadata
$metadata_arr = apply_filters('amt_jsonld_schemaorg_metadata_content', $metadata_arr);
// Add articleBody to Artice
// Now add the article. Remove last closing '</span>' tag, add articleBody and re-add the closing span afterwards.
// $closing_article_tag = array_pop($metadata_arr);
// Use the 'text' itemprop by default for the main text body of the CreativeWork,
// so it can be used by more subtypes than Article.
// But set it explicitly to 'articleBody if the main entiry is 'Article'
// or 'reviewBody' if the main entity is a 'Review'.
$main_text_property = 'text';
if ($main_content_object == 'Article') {
$main_text_property = 'articleBody';
} elseif ($main_content_object == 'Review') {
$main_text_property = 'reviewBody';
}
// Allow filtering of the main text property.
$main_text_property = apply_filters('amt_schemaorg_property_main_text', $main_text_property);
// $metadata_arr[] = '<div itemprop="' . esc_attr($main_text_property) . '">';
// Add main content
//$metadata_arr[ esc_attr($main_text_property) ] = $post->post_content;
// $metadata_arr[] = $post_body;
// $metadata_arr[] = '</div> <!-- Itemprop END: ' . esc_attr($main_text_property) . ' -->';
// Now add closing tag for Article
// $metadata_arr[] = $closing_article_tag;
}
// Add our comment
// if ( count( $metadata_arr ) > 0 ) {
// array_unshift( $metadata_arr, "<!-- BEGIN Schema.org microdata added by Add-Meta-Tags WordPress plugin -->" );
// array_unshift( $metadata_arr, "" ); // Intentionaly left empty
// array_push( $metadata_arr, "<!-- END Schema.org microdata added by Add-Meta-Tags WordPress plugin -->" );
// array_push( $metadata_arr, "" ); // Intentionaly left empty
// }
//return $post_body;
// return implode( PHP_EOL, $metadata_arr );
// Filtering of the generated microdata for footer
$metadata_arr = apply_filters('amt_jsonld_schemaorg_metadata_head', $metadata_arr);
// if ( count( $metadata_arr ) > 0 ) {
// array_unshift( $metadata_arr, '<script type="application/ld+json">' );
// array_unshift( $metadata_arr, "" ); // Intentionaly left empty
// array_push( $metadata_arr, '</script>' );
// array_push( $metadata_arr, "" ); // Intentionaly left empty
// }
// return $metadata_arr;
if (count($metadata_arr) > 1) {
// contains @context by default
return array('<script type="application/ld+json">', 'json+ld_data' => json_encode($metadata_arr), '</script>');
} else {
return array();
}
}
/**
* Generates basic metadata for the head area.
*
*/
function amt_add_basic_metadata_head($post, $attachments, $embedded_media, $options)
{
$do_description = $options["auto_description"] == "1" ? true : false;
$do_keywords = $options["auto_keywords"] == "1" ? true : false;
$do_noodp_description = $options["noodp_description"] == "1" ? true : false;
// Array to store metadata
$metadata_arr = array();
// Robots Meta Tag.
$robots_content = '';
if ($do_noodp_description && (is_front_page() || is_singular())) {
// Add NOODP on posts and pages
$robots_content = 'NOODP,NOYDIR';
// Allow filtering of the robots meta tag content.
$robots_content = apply_filters('amt_robots_data', $robots_content);
}
// Add a robots meta tag if its content is not empty.
if (!empty($robots_content)) {
$metadata_arr[] = '<meta name="robots" content="' . $robots_content . '" />';
}
// hreflang link element
if ($options['generate_hreflang_links'] == '1') {
if (is_singular()) {
$locale = amt_get_language_content($options, $post);
$hreflang = amt_get_the_hreflang($locale, $options);
$hreflang_url = amt_get_permalink_for_multipage($post);
} else {
$locale = amt_get_language_site($options);
$hreflang = amt_get_the_hreflang($locale, $options);
$hreflang_url = '';
if (amt_is_default_front_page()) {
$hreflang_url = trailingslashit(get_bloginfo('url'));
} elseif (is_category() || is_tag() || is_tax()) {
// $post is a term object
$hreflang_url = get_term_link($post);
} elseif (is_author()) {
// $post is an author object
$hreflang_url = get_author_posts_url($post->ID);
} elseif (is_year()) {
$archive_year = get_the_time('Y');
$hreflang_url = get_year_link($archive_year);
} elseif (is_month()) {
$archive_year = get_the_time('Y');
$archive_month = get_the_time('m');
$hreflang_url = get_month_link($archive_year, $archive_month);
} elseif (is_day()) {
$archive_year = get_the_time('Y');
$archive_month = get_the_time('m');
$archive_day = get_the_time('d');
$hreflang_url = get_day_link($archive_year, $archive_month, $archive_day);
}
// If paged information is available
if (is_paged()) {
//$hreflang_url = trailingslashit( $hreflang_url ) . get_query_var('paged') . '/';
$hreflang_url = get_pagenum_link(get_query_var('paged'));
}
}
// hreflang links array
$hreflang_arr = array();
// Add link element
if (!empty($hreflang) && !empty($hreflang_url)) {
$hreflang_arr[] = '<link rel="alternate" hreflang="' . esc_attr($hreflang) . '" href="' . esc_url_raw($hreflang_url) . '" />';
}
// Allow filtering of the hreflang array
$hreflang_arr = apply_filters('amt_hreflang_links', $hreflang_arr, $hreflang, $hreflang_url);
// Add to to metadata array
foreach ($hreflang_arr as $hreflang_link) {
$metadata_arr[] = $hreflang_link;
}
}
// Basic Meta Tags
// Default front page displaying latest posts
if (amt_is_default_front_page()) {
// Description and Keywords from the Add-Meta-Tags settings override
// default behaviour.
// Description
if ($do_description) {
// Use the site description from the Add-Meta-Tags settings.
// Fall back to the blog description.
$site_description = amt_get_site_description($options);
if (empty($site_description)) {
// Alternatively, use the blog description
// Here we sanitize the provided description for safety
$site_description = sanitize_text_field(amt_sanitize_description(get_bloginfo('description')));
}
// If we have a description, use it in the description meta-tag of the front page
if (!empty($site_description)) {
// Note: Contains multipage information through amt_process_paged()
$metadata_arr[] = '<meta name="description" content="' . esc_attr(amt_process_paged($site_description)) . '" />';
}
}
// Keywords
if ($do_keywords) {
// Use the site keywords from the Add-Meta-Tags settings.
// Fall back to the blog categories.
$site_keywords = amt_get_site_keywords($options);
if (empty($site_keywords)) {
// Alternatively, use the blog categories
// Here we sanitize the provided keywords for safety
$site_keywords = sanitize_text_field(amt_sanitize_keywords(amt_get_all_categories()));
}
// If we have keywords, use them in the keywords meta-tag of the front page
if (!empty($site_keywords)) {
$metadata_arr[] = '<meta name="keywords" content="' . esc_attr($site_keywords) . '" />';
}
}
// Attachments
} elseif (is_attachment()) {
// has to be before is_singular() since is_singular() is true for attachments.
// Description
if ($do_description) {
$description = amt_get_content_description($post, $auto = $do_description);
if (!empty($description)) {
// Note: Contains multipage information through amt_process_paged()
$metadata_arr[] = '<meta name="description" content="' . esc_attr(amt_process_paged($description)) . '" />';
}
}
// No keywords
// Content pages and static pages used as "front page" and "posts page"
// This also supports products via is_singular()
} elseif (is_singular() || amt_is_static_front_page() || amt_is_static_home()) {
// Description
if ($do_description) {
$description = amt_get_content_description($post, $auto = $do_description);
if (!empty($description)) {
// Note: Contains multipage information through amt_process_paged()
$metadata_arr[] = '<meta name="description" content="' . esc_attr(amt_process_paged($description)) . '" />';
}
}
// Keywords
if ($do_keywords) {
$keywords = amt_get_content_keywords($post, $auto = $do_keywords);
if (!empty($keywords)) {
$metadata_arr[] = '<meta name="keywords" content="' . esc_attr($keywords) . '" />';
// Static Posts Index Page
// If no keywords have been set in the metabox and this is the static page,
// which displayes the latest posts, use the categories of the posts in the loop.
} elseif (amt_is_static_home()) {
// Here we sanitize the provided keywords for safety
$cats_from_loop = sanitize_text_field(amt_sanitize_keywords(implode(', ', amt_get_categories_from_loop())));
if (!empty($cats_from_loop)) {
$metadata_arr[] = '<meta name="keywords" content="' . esc_attr($cats_from_loop) . '" />';
}
}
}
// 'news_keywords'
$newskeywords = amt_get_post_meta_newskeywords($post->ID);
if (!empty($newskeywords)) {
$metadata_arr[] = '<meta name="news_keywords" content="' . esc_attr($newskeywords) . '" />';
}
// per post full meta tags
$full_metatags_for_content = amt_get_post_meta_full_metatags($post->ID);
if (!empty($full_metatags_for_content)) {
$metadata_arr[] = html_entity_decode(stripslashes($full_metatags_for_content));
}
// Category based archives
} elseif (is_category()) {
if ($do_description) {
// If set, the description of the category is used in the 'description' metatag.
// Otherwise, a generic description is used.
// Here we sanitize the provided description for safety
$description_content = sanitize_text_field(amt_sanitize_description(category_description()));
// Note: Contains multipage information through amt_process_paged()
if (empty($description_content)) {
// Add a filtered generic description.
$generic_description = apply_filters('amt_generic_description_category_archive', __('Content filed under the %s category.', 'add-meta-tags'));
$generic_description = sprintf($generic_description, single_cat_title($prefix = '', $display = false));
$metadata_arr[] = '<meta name="description" content="' . esc_attr(amt_process_paged($generic_description)) . '" />';
} else {
$metadata_arr[] = '<meta name="description" content="' . esc_attr(amt_process_paged($description_content)) . '" />';
}
}
if ($do_keywords) {
// The category name alone is included in the 'keywords' metatag
// Here we sanitize the provided keywords for safety
$cur_cat_name = sanitize_text_field(amt_sanitize_keywords(single_cat_title($prefix = '', $display = false)));
if (!empty($cur_cat_name)) {
$metadata_arr[] = '<meta name="keywords" content="' . esc_attr($cur_cat_name) . '" />';
}
}
} elseif (is_tag()) {
if ($do_description) {
// If set, the description of the tag is used in the 'description' metatag.
// Otherwise, a generic description is used.
// Here we sanitize the provided description for safety
$description_content = sanitize_text_field(amt_sanitize_description(tag_description()));
// Note: Contains multipage information through amt_process_paged()
if (empty($description_content)) {
// Add a filtered generic description.
$generic_description = apply_filters('amt_generic_description_tag_archive', __('Content tagged with %s.', 'add-meta-tags'));
$generic_description = sprintf($generic_description, single_tag_title($prefix = '', $display = false));
$metadata_arr[] = '<meta name="description" content="' . esc_attr(amt_process_paged($generic_description)) . '" />';
} else {
$metadata_arr[] = '<meta name="description" content="' . esc_attr(amt_process_paged($description_content)) . '" />';
}
}
if ($do_keywords) {
// The tag name alone is included in the 'keywords' metatag
// Here we sanitize the provided keywords for safety
$cur_tag_name = sanitize_text_field(amt_sanitize_keywords(single_tag_title($prefix = '', $display = false)));
if (!empty($cur_tag_name)) {
$metadata_arr[] = '<meta name="keywords" content="' . esc_attr($cur_tag_name) . '" />';
}
}
// Custom taxonomies - Should be after is_category() and is_tag(), as it would catch those taxonomies as well.
// This also supports product groups via is_tax(). Only product groups that are WordPress custom taxonomies are supported.
} elseif (is_tax()) {
// Taxonomy term object.
// When viewing taxonomy archives, the $post object is the taxonomy term object. Check with: var_dump($post);
$tax_term_object = $post;
//var_dump($tax_term_object);
if ($do_description) {
// If set, the description of the custom taxonomy term is used in the 'description' metatag.
// Otherwise, a generic description is used.
// Here we sanitize the provided description for safety
$description_content = sanitize_text_field(amt_sanitize_description(term_description($tax_term_object->term_id, $tax_term_object->taxonomy)));
// Note: Contains multipage information through amt_process_paged()
if (empty($description_content)) {
// Add a filtered generic description.
// Construct the filter name. Template: ``amt_generic_description_TAXONOMYSLUG_archive``
$taxonomy_description_filter_name = sprintf('amt_generic_description_%s_archive', $tax_term_object->taxonomy);
// var_dump($taxonomy_description_filter_name);
$generic_description = apply_filters($taxonomy_description_filter_name, __('Content filed under the %s taxonomy.', 'add-meta-tags'));
$generic_description = sprintf($generic_description, single_term_title($prefix = '', $display = false));
$metadata_arr[] = '<meta name="description" content="' . esc_attr(amt_process_paged($generic_description)) . '" />';
} else {
$metadata_arr[] = '<meta name="description" content="' . esc_attr(amt_process_paged($description_content)) . '" />';
}
}
if ($do_keywords) {
// The taxonomy term name alone is included in the 'keywords' metatag.
// Here we sanitize the provided keywords for safety.
$cur_tax_term_name = sanitize_text_field(amt_sanitize_keywords(single_term_title($prefix = '', $display = false)));
if (!empty($cur_tax_term_name)) {
$metadata_arr[] = '<meta name="keywords" content="' . esc_attr($cur_tax_term_name) . '" />';
}
}
} elseif (is_author()) {
// Author object
// NOTE: Inside the author archives `$post->post_author` does not contain the author object.
// In this case the $post (get_queried_object()) contains the author object itself.
// We also can get the author object with the following code. Slug is what WP uses to construct urls.
// $author = get_user_by( 'slug', get_query_var( 'author_name' ) );
// Also, ``get_the_author_meta('....', $author)`` returns nothing under author archives.
// Access user meta with: $author->description, $author->user_email, etc
// $author = get_queried_object();
$author = $post;
// If a bio has been set in the user profile, use it in the description metatag of the
// first page of the author archive *ONLY*. The other pages of the author archive use a generic description.
// This happens because the 1st page of the author archive is considered the profile page
// by the other metadata modules.
// Otherwise use a generic meta tag.
if ($do_description) {
// Here we sanitize the provided description for safety
$author_description = sanitize_text_field(amt_sanitize_description($author->description));
if (empty($author_description) || is_paged()) {
// Note: Contains multipage information through amt_process_paged()
// Add a filtered generic description.
$generic_description = apply_filters('amt_generic_description_author_archive', __('Content published by %s.', 'add-meta-tags'));
$generic_description = sprintf($generic_description, $author->display_name);
$metadata_arr[] = '<meta name="description" content="' . esc_attr(amt_process_paged($generic_description)) . '" />';
} else {
$metadata_arr[] = '<meta name="description" content="' . esc_attr($author_description) . '" />';
}
}
// For the keywords metatag use the categories of the posts the author has written and are displayed in the current page.
if ($do_keywords) {
// Here we sanitize the provided keywords for safety
$cats_from_loop = sanitize_text_field(amt_sanitize_keywords(implode(', ', amt_get_categories_from_loop())));
if (!empty($cats_from_loop)) {
$metadata_arr[] = '<meta name="keywords" content="' . esc_attr($cats_from_loop) . '" />';
}
}
}
// Add site wide meta tags
if (!empty($options["site_wide_meta"])) {
$metadata_arr[] = html_entity_decode(stripslashes($options["site_wide_meta"]));
}
// On every page print the copyright head link
$copyright_url = amt_get_site_copyright_url($options);
//if ( empty($copyright_url)) {
// $copyright_url = trailingslashit( get_bloginfo('url') );
//}
if (!empty($copyright_url)) {
$metadata_arr[] = '<link rel="copyright" type="text/html" title="' . esc_attr(get_bloginfo('name')) . ' Copyright Information" href="' . esc_url_raw($copyright_url) . '" />';
}
// Filtering of the generated basic metadata
$metadata_arr = apply_filters('amt_basic_metadata_head', $metadata_arr);
return $metadata_arr;
}
/**
* Generates Opengraph metadata.
*
* Currently for:
* - home page
* - author archive
* - content
*/
function amt_add_opengraph_metadata_head($post, $attachments, $embedded_media, $options)
{
if (apply_filters('amt_exclude_opengraph_metadata', false)) {
return array();
}
$do_auto_opengraph = $options["auto_opengraph"] == "1" ? true : false;
if (!$do_auto_opengraph) {
return array();
}
$metadata_arr = array();
// fb:app_id & fb:admins
// We currently let users add the full meta tags for fb:app_id and fb:admins in the site wide meta tags box.
// fb:app_id appears everywhere
//if ( ! empty($options['social_main_facebook_app_id']) ) {
// $metadata_arr[] = '<meta property="fb:app_id" content="' . esc_attr( $options['social_main_facebook_app_id'] ) . '" />';
//}
// fb:admins appear everywhere
//if ( ! empty($options['social_main_facebook_admins']) ) {
// $fb_admins_arr = explode(',', $options['social_main_facebook_admins']);
// foreach ( $fb_admins_arr as $fb_admin ) {
// $metadata_arr[] = '<meta property="fb:admins" content="' . esc_attr( trim($fb_admin) ) . '" />';
// }
//}
// no publisher meta tag for facebook, unless it is content
// Custom content override
if (amt_is_custom($post, $options)) {
// Return metadata with:
// add_filter( 'amt_custom_metadata_opengraph', 'my_function', 10, 5 );
// Return an array of meta tags. Array item format: ['key_can_be_whatever'] = '<meta name="foo" content="bar" />'
$metadata_arr = apply_filters('amt_custom_metadata_opengraph', $metadata_arr, $post, $options, $attachments, $embedded_media);
// Default front page displaying the latest posts
} elseif (amt_is_default_front_page()) {
// Type
$metadata_arr[] = '<meta property="og:type" content="website" />';
// Site Name
$metadata_arr[] = '<meta property="og:site_name" content="' . esc_attr(get_bloginfo('name')) . '" />';
// Title - Note: Contains multipage information
$metadata_arr['og:title'] = '<meta property="og:title" content="' . esc_attr(amt_get_title_for_metadata($options, $post)) . '" />';
// URL - Note: different method to get the permalink on paged archives
if (is_paged()) {
$metadata_arr[] = '<meta property="og:url" content="' . esc_url_raw(get_pagenum_link(get_query_var('paged'))) . '" />';
} else {
$metadata_arr[] = '<meta property="og:url" content="' . esc_url_raw(trailingslashit(get_bloginfo('url'))) . '" />';
}
// Site description - Note: Contains multipage information through amt_process_paged()
$site_description = amt_get_site_description($options);
if (empty($site_description)) {
$site_description = get_bloginfo('description');
}
if (!empty($site_description)) {
$metadata_arr[] = '<meta property="og:description" content="' . esc_attr(amt_process_paged($site_description)) . '" />';
}
// Locale
$metadata_arr[] = '<meta property="og:locale" content="' . esc_attr(str_replace('-', '_', amt_get_language_site($options))) . '" />';
// Site Image
// Use the default image, if one has been set.
$image_data = amt_get_default_image_data();
if (!empty($image_data)) {
$image_size = apply_filters('amt_image_size_index', 'full');
$image_meta_tags = amt_get_opengraph_image_metatags($options, $image_data, $size = $image_size);
if (!empty($image_meta_tags)) {
$metadata_arr = array_merge($metadata_arr, $image_meta_tags);
}
}
// Front page using a static page
// Note: might also contain a listing of posts which may be paged, so use amt_process_paged()
} elseif (amt_is_static_front_page()) {
// Type
if ($options['author_profile_source'] == 'frontpage') {
// The front page is treated as the profile page.
$metadata_arr[] = '<meta property="og:type" content="profile" />';
} else {
$metadata_arr[] = '<meta property="og:type" content="website" />';
}
// Site Name
$metadata_arr[] = '<meta property="og:site_name" content="' . esc_attr(get_bloginfo('name')) . '" />';
// Title - Note: Contains multipage information
$metadata_arr['og:title'] = '<meta property="og:title" content="' . esc_attr(amt_get_title_for_metadata($options, $post)) . '" />';
// URL - Note: different method to get the permalink on paged archives
if (is_paged()) {
$metadata_arr[] = '<meta property="og:url" content="' . esc_url_raw(get_pagenum_link(get_query_var('paged'))) . '" />';
} else {
$metadata_arr[] = '<meta property="og:url" content="' . esc_url_raw(trailingslashit(get_bloginfo('url'))) . '" />';
}
// Site Description - Note: Contains multipage information through amt_process_paged()
$content_desc = amt_get_content_description($post);
if (!empty($content_desc)) {
// Use the pages custom description
$metadata_arr[] = '<meta property="og:description" content="' . esc_attr(amt_process_paged($content_desc)) . '" />';
} elseif (get_bloginfo('description')) {
// Alternatively use the blog's description
$metadata_arr[] = '<meta property="og:description" content="' . esc_attr(amt_process_paged(get_bloginfo('description'))) . '" />';
}
// Locale
$metadata_arr[] = '<meta property="og:locale" content="' . esc_attr(str_replace('-', '_', amt_get_language_content($options, $post))) . '" />';
// Site Image
// First check if a global image override URL has been entered.
// If yes, use this image URL and override all other images.
$image_data = amt_get_image_attributes_array(amt_get_post_meta_image_url($post->ID));
if (!empty($image_data)) {
$image_size = apply_filters('amt_image_size_index', 'full');
$image_meta_tags = amt_get_opengraph_image_metatags($options, $image_data, $size = $image_size);
if (!empty($image_meta_tags)) {
$metadata_arr = array_merge($metadata_arr, $image_meta_tags);
}
//$global_image_override_url = amt_get_post_meta_image_url($post->ID);
//if ( ! empty( $global_image_override_url ) ) {
// $metadata_arr[] = '<meta property="og:image" content="' . esc_url_raw( $global_image_override_url ) . '" />';
// if ( is_ssl() || ( ! is_ssl() && $options["has_https_access"] == "1" ) ) {
// $metadata_arr[] = '<meta property="og:image:secure_url" content="' . esc_url_raw( str_replace('http:', 'https:', $global_image_override_url ) ) . '" />';
// }
// Then try the featured image, if exists.
} elseif (function_exists('has_post_thumbnail') && has_post_thumbnail($post->ID)) {
// Allow filtering of the image size.
$image_size = apply_filters('amt_image_size_index', 'full');
$metadata_arr = array_merge($metadata_arr, amt_get_opengraph_image_metatags($options, get_post_thumbnail_id($post->ID), $size = $image_size));
} else {
// Use the default image, if one has been set.
$image_data = amt_get_default_image_data();
if (!empty($image_data)) {
$image_size = apply_filters('amt_image_size_index', 'full');
$image_meta_tags = amt_get_opengraph_image_metatags($options, $image_data, $size = $image_size);
if (!empty($image_meta_tags)) {
$metadata_arr = array_merge($metadata_arr, $image_meta_tags);
}
}
// Alternatively, use default image
//$metadata_arr[] = '<meta property="og:image" content="' . esc_url_raw( $options["default_image_url"] ) . '" />';
//if ( is_ssl() || ( ! is_ssl() && $options["has_https_access"] == "1" ) ) {
// $metadata_arr[] = '<meta property="og:image:secure_url" content="' . esc_url_raw( str_replace('http:', 'https:', $options["default_image_url"] ) ) . '" />';
//}
}
// Profile data (only if the front page has been set as the source of profile.)
if ($options['author_profile_source'] == 'frontpage') {
// Profile first and last name
$last_name = get_the_author_meta('last_name', $post->post_author);
if (!empty($last_name)) {
$metadata_arr[] = '<meta property="profile:last_name" content="' . esc_attr($last_name) . '" />';
}
$first_name = get_the_author_meta('first_name', $post->post_author);
if (!empty($first_name)) {
$metadata_arr[] = '<meta property="profile:first_name" content="' . esc_attr($first_name) . '" />';
}
}
// The posts index page - a static page displaying the latest posts
} elseif (amt_is_static_home()) {
// Type
$metadata_arr[] = '<meta property="og:type" content="website" />';
// Site Name
$metadata_arr[] = '<meta property="og:site_name" content="' . esc_attr(get_bloginfo('name')) . '" />';
// Title - Note: Contains multipage information
$metadata_arr['og:title'] = '<meta property="og:title" content="' . esc_attr(amt_get_title_for_metadata($options, $post)) . '" />';
// URL - Note: different method to get the permalink on paged archives
if (is_paged()) {
$metadata_arr[] = '<meta property="og:url" content="' . esc_url_raw(get_pagenum_link(get_query_var('paged'))) . '" />';
} else {
$metadata_arr[] = '<meta property="og:url" content="' . esc_url_raw(get_permalink($post->ID)) . '" />';
}
// Site Description - Note: Contains multipage information through amt_process_paged()
$content_desc = amt_get_content_description($post);
if (!empty($content_desc)) {
// Use the pages custom description
$metadata_arr[] = '<meta property="og:description" content="' . esc_attr(amt_process_paged($content_desc)) . '" />';
} elseif (get_bloginfo('description')) {
// Alternatively use a generic description
$metadata_arr[] = '<meta property="og:description" content="' . amt_process_paged("An index of the latest content.") . '" />';
}
// Locale
$metadata_arr[] = '<meta property="og:locale" content="' . esc_attr(str_replace('-', '_', amt_get_language_content($options, $post))) . '" />';
// Site Image
// First check if a global image override URL has been entered.
// If yes, use this image URL and override all other images.
$image_data = amt_get_image_attributes_array(amt_get_post_meta_image_url($post->ID));
if (!empty($image_data)) {
$image_size = apply_filters('amt_image_size_index', 'full');
$image_meta_tags = amt_get_opengraph_image_metatags($options, $image_data, $size = $image_size);
if (!empty($image_meta_tags)) {
$metadata_arr = array_merge($metadata_arr, $image_meta_tags);
}
//$global_image_override_url = amt_get_post_meta_image_url($post->ID);
//if ( ! empty( $global_image_override_url ) ) {
// $metadata_arr[] = '<meta property="og:image" content="' . esc_url_raw( $global_image_override_url ) . '" />';
// if ( is_ssl() || ( ! is_ssl() && $options["has_https_access"] == "1" ) ) {
// $metadata_arr[] = '<meta property="og:image:secure_url" content="' . esc_url_raw( str_replace('http:', 'https:', $global_image_override_url ) ) . '" />';
// }
// Then try the featured image, if exists.
} elseif (function_exists('has_post_thumbnail') && has_post_thumbnail($post->ID)) {
// Allow filtering of the image size.
$image_size = apply_filters('amt_image_size_index', 'full');
$metadata_arr = array_merge($metadata_arr, amt_get_opengraph_image_metatags($options, get_post_thumbnail_id($post->ID), $size = $image_size));
} else {
// Use the default image, if one has been set.
$image_data = amt_get_default_image_data();
if (!empty($image_data)) {
$image_size = apply_filters('amt_image_size_index', 'full');
$image_meta_tags = amt_get_opengraph_image_metatags($options, $image_data, $size = $image_size);
if (!empty($image_meta_tags)) {
$metadata_arr = array_merge($metadata_arr, $image_meta_tags);
}
}
// Alternatively, use default image
//$metadata_arr[] = '<meta property="og:image" content="' . esc_url_raw( $options["default_image_url"] ) . '" />';
//if ( is_ssl() || ( ! is_ssl() && $options["has_https_access"] == "1" ) ) {
// $metadata_arr[] = '<meta property="og:image:secure_url" content="' . esc_url_raw( str_replace('http:', 'https:', $options["default_image_url"] ) ) . '" />';
//}
}
// Category, Tag, Taxonomy archives
// Note: product groups should pass the is_tax() validation, so no need for
// amt_is_product_group(). We do not support other product groups.
// amt_is_product_group() is used below to set the og:type to product.group.
} elseif (is_category() || is_tag() || is_tax()) {
// Taxonomy term object.
// When viewing taxonomy archives, the $post object is the taxonomy term object. Check with: var_dump($post);
$tax_term_object = $post;
//var_dump($tax_term_object);
// Type
// In case of a product group taxonomy, we set the og:type to product.group
if (amt_is_product_group()) {
$metadata_arr[] = '<meta property="og:type" content="product.group" />';
} else {
$metadata_arr[] = '<meta property="og:type" content="website" />';
}
// Site Name
$metadata_arr[] = '<meta property="og:site_name" content="' . esc_attr(get_bloginfo('name')) . '" />';
// Title - Note: Contains multipage information
$metadata_arr['og:title'] = '<meta property="og:title" content="' . esc_attr(amt_get_title_for_metadata($options, $post)) . '" />';
// URL - Note: different method to get the permalink on paged archives
$url = get_term_link($tax_term_object);
if (is_paged()) {
$url = trailingslashit($url) . get_query_var('paged') . '/';
}
$metadata_arr[] = '<meta property="og:url" content="' . esc_url_raw($url) . '" />';
// Description
// If set, the description of the custom taxonomy term is used in the 'description' metatag.
// Otherwise, a generic description is used.
// Here we sanitize the provided description for safety
$description_content = sanitize_text_field(amt_sanitize_description(term_description($tax_term_object->term_id, $tax_term_object->taxonomy)));
// Note: Contains multipage information through amt_process_paged()
if (empty($description_content)) {
// Add a filtered generic description.
// Filter name
if (is_category()) {
$generic_description = apply_filters('amt_generic_description_category_archive', __('Content filed under the %s category.', 'add-meta-tags'));
} elseif (is_tag()) {
$generic_description = apply_filters('amt_generic_description_tag_archive', __('Content tagged with %s.', 'add-meta-tags'));
} elseif (is_tax()) {
// Construct the filter name. Template: ``amt_generic_description_TAXONOMYSLUG_archive``
$taxonomy_description_filter_name = sprintf('amt_generic_description_%s_archive', $tax_term_object->taxonomy);
// var_dump($taxonomy_description_filter_name);
// Generic description
$generic_description = apply_filters($taxonomy_description_filter_name, __('Content filed under the %s taxonomy.', 'add-meta-tags'));
}
// Final generic description
$generic_description = sprintf($generic_description, single_term_title($prefix = '', $display = false));
$metadata_arr[] = '<meta property="og:description" content="' . esc_attr(amt_process_paged($generic_description)) . '" />';
} else {
$metadata_arr[] = '<meta property="og:description" content="' . esc_attr(amt_process_paged($description_content)) . '" />';
}
// Locale
$metadata_arr[] = '<meta property="og:locale" content="' . esc_attr(str_replace('-', '_', amt_get_language_site($options))) . '" />';
// Image
// Use an image from the 'Global image override' field.
// Otherwise, use a user defined image via filter.
// Otherwise use default image.
$image_data = amt_get_image_attributes_array(amt_get_term_meta_image_url($tax_term_object->term_id));
if (!empty($image_data)) {
$image_size = apply_filters('amt_image_size_index', 'full');
$image_meta_tags = amt_get_opengraph_image_metatags($options, $image_data, $size = $image_size);
if (!empty($image_meta_tags)) {
$metadata_arr = array_merge($metadata_arr, $image_meta_tags);
}
} else {
// First filter using a term/taxonomy agnostic filter name.
$taxonomy_image_url = apply_filters('amt_taxonomy_force_image_url', '', $tax_term_object);
if (empty($taxonomy_image_url)) {
// Second filter (term/taxonomy dependent).
// Construct the filter name. Template: ``amt_taxonomy_image_url_TAXONOMYSLUG_TERMSLUG``
$taxonomy_image_url_filter_name = sprintf('amt_taxonomy_image_url_%s_%s', $tax_term_object->taxonomy, $tax_term_object->slug);
//var_dump($taxonomy_image_url_filter_name);
// The default image, if set, is used by default.
$taxonomy_image_url = apply_filters($taxonomy_image_url_filter_name, $options["default_image_url"]);
}
if (!empty($taxonomy_image_url)) {
$image_data = amt_get_image_attributes_array($taxonomy_image_url);
if (!empty($image_data)) {
$image_size = apply_filters('amt_image_size_index', 'full');
$image_meta_tags = amt_get_opengraph_image_metatags($options, $image_data, $size = $image_size);
if (!empty($image_meta_tags)) {
$metadata_arr = array_merge($metadata_arr, $image_meta_tags);
}
}
//$metadata_arr[] = '<meta property="og:image" content="' . esc_url_raw( $taxonomy_image_url ) . '" />';
//if ( is_ssl() || ( ! is_ssl() && $options["has_https_access"] == "1" ) ) {
// $metadata_arr[] = '<meta property="og:image:secure_url" content="' . esc_url_raw( str_replace('http:', 'https:', $taxonomy_image_url ) ) . '" />';
//}
}
}
// Author archive. First page is considered a profile page.
} elseif (is_author()) {
// Author object
// NOTE: Inside the author archives `$post->post_author` does not contain the author object.
// In this case the $post (get_queried_object()) contains the author object itself.
// We also can get the author object with the following code. Slug is what WP uses to construct urls.
// $author = get_user_by( 'slug', get_query_var( 'author_name' ) );
// Also, ``get_the_author_meta('....', $author)`` returns nothing under author archives.
// Access user meta with: $author->description, $author->user_email, etc
// $author = get_queried_object();
$author = $post;
// Type
if (!is_paged() && $options['author_profile_source'] == 'default') {
// We treat the first page of the archive as a profile, only if
// the profile source has been set to 'default'
$metadata_arr[] = '<meta property="og:type" content="profile" />';
} else {
$metadata_arr[] = '<meta property="og:type" content="website" />';
}
// Site Name
$metadata_arr[] = '<meta property="og:site_name" content="' . esc_attr(get_bloginfo('name')) . '" />';
// Title - Note: Contains multipage information
//if ( ! is_paged() ) {
// // We treat the first page of the archive as a profile
// $metadata_arr[] = '<meta property="og:title" content="' . esc_attr( $author->display_name ) . ' profile page" />';
//} else {
// $metadata_arr[] = '<meta property="og:title" content="' . esc_attr( amt_process_paged( "Content published by " . $author->display_name ) ) . '" />';
//}
$metadata_arr['og:title'] = '<meta property="og:title" content="' . esc_attr(amt_get_title_for_metadata($options, $post)) . ' profile page" />';
// URL - Note: different method to get the permalink on paged archives
// If a Facebook author profile URL has been provided, it has priority,
// Otherwise fall back to the WordPress author archive.
$fb_author_url = $author->amt_facebook_author_profile_url;
if (!empty($fb_author_url)) {
$metadata_arr[] = '<meta property="og:url" content="' . esc_url_raw($fb_author_url, array('http', 'https')) . '" />';
} else {
if (is_paged()) {
$metadata_arr[] = '<meta property="og:url" content="' . esc_url_raw(get_pagenum_link(get_query_var('paged'))) . '" />';
} else {
$metadata_arr[] = '<meta property="og:url" content="' . esc_url_raw(get_author_posts_url($author->ID)) . '" />';
// The following makes no sense here. 'get_author_posts_url( $author->ID )' will do in all cases.
//$metadata_arr[] = '<meta property="og:url" content="' . esc_url_raw( amt_get_local_author_profile_url( $author->ID, $options ) ) . '" />';
}
}
// description - Note: Contains multipage information through amt_process_paged()
if (is_paged()) {
$metadata_arr[] = '<meta property="og:description" content="' . esc_attr(amt_process_paged("Content published by " . $author->display_name)) . '" />';
} else {
// Here we sanitize the provided description for safety
// We treat the first page of the archive as a profile
$author_description = sanitize_text_field(amt_sanitize_description($author->description));
if (empty($author_description)) {
$metadata_arr[] = '<meta property="og:description" content="' . esc_attr("Content published by " . $author->display_name) . '" />';
} else {
$metadata_arr[] = '<meta property="og:description" content="' . esc_attr($author_description) . '" />';
}
}
// Locale
$metadata_arr[] = '<meta property="og:locale" content="' . esc_attr(str_replace('-', '_', amt_get_language_site($options))) . '" />';
// Profile Image
// First use the global image override URL
$image_data = amt_get_image_attributes_array(amt_get_user_meta_image_url($author->ID));
if (!empty($image_data)) {
$image_size = apply_filters('amt_image_size_index', 'full');
$image_meta_tags = amt_get_opengraph_image_metatags($options, $image_data, $size = $image_size);
if (!empty($image_meta_tags)) {
$metadata_arr = array_merge($metadata_arr, $image_meta_tags);
}
} else {
$author_email = sanitize_email($author->user_email);
$avatar_size = apply_filters('amt_avatar_size', 128);
$avatar_url = '';
// First try to get the avatar link by using get_avatar().
// Important: for this to work the "Show Avatars" option should be enabled in Settings > Discussion.
$avatar_img = get_avatar(get_the_author_meta('ID', $author->ID), $avatar_size, '', get_the_author_meta('display_name', $author->ID));
if (!empty($avatar_img)) {
if (preg_match("#src=['\"]([^'\"]+)['\"]#", $avatar_img, $matches)) {
$avatar_url = $matches[1];
}
} elseif (!empty($author_email)) {
// If the user has provided an email, we use it to construct a gravatar link.
$avatar_url = "http://www.gravatar.com/avatar/" . md5($author_email) . "?s=" . $avatar_size;
}
if (!empty($avatar_url)) {
//$avatar_url = html_entity_decode($avatar_url, ENT_NOQUOTES, 'UTF-8');
$metadata_arr[] = '<meta property="og:image" content="' . esc_url_raw($avatar_url) . '" />';
// Add an og:imagesecure_url if the image URL uses HTTPS
if (strpos($avatar_url, 'https://') !== false) {
$metadata_arr[] = '<meta property="og:imagesecure_url" content="' . esc_url_raw($avatar_url) . '" />';
}
if (apply_filters('amt_extended_image_tags', true)) {
$metadata_arr[] = '<meta property="og:image:width" content="' . esc_attr($avatar_size) . '" />';
$metadata_arr[] = '<meta property="og:image:height" content="' . esc_attr($avatar_size) . '" />';
// Since we do not have a way to determine the image type, the following meta tag is commented out
// TODO: make a function that detects the image type from the file extension (if a file extension is available)
//$metadata_arr[] = '<meta property="og:image:type" content="image/jpeg" />';
}
}
}
// Profile data (only on the 1st page of the archive)
if (!is_paged() && $options['author_profile_source'] == 'default') {
// Profile first and last name
$last_name = $author->last_name;
if (!empty($last_name)) {
$metadata_arr[] = '<meta property="profile:last_name" content="' . esc_attr($last_name) . '" />';
}
$first_name = $author->first_name;
if (!empty($first_name)) {
$metadata_arr[] = '<meta property="profile:first_name" content="' . esc_attr($first_name) . '" />';
}
}
// Custom Post Type archives
} elseif (is_post_type_archive()) {
// Custom post type object.
// When viewing custom post type archives, the $post object is the custom post type object. Check with: var_dump($post);
$post_type_object = $post;
//var_dump($post_type_object);
// Type
$metadata_arr[] = '<meta property="og:type" content="website" />';
// Site Name
$metadata_arr[] = '<meta property="og:site_name" content="' . esc_attr(get_bloginfo('name')) . '" />';
// Title - Note: Contains multipage information
$metadata_arr['og:title'] = '<meta property="og:title" content="' . esc_attr(amt_get_title_for_metadata($options, $post)) . '" />';
// URL - Note: different method to get the permalink on paged archives
$url = get_post_type_archive_link($post_type_object->name);
if (is_paged()) {
$url = trailingslashit($url) . get_query_var('paged') . '/';
}
$metadata_arr[] = '<meta property="og:url" content="' . esc_url_raw($url) . '" />';
// Description
// Note: Contains multipage information through amt_process_paged()
// Add a filtered generic description.
// Construct the filter name. Template: ``amt_generic_description_posttype_POSTTYPESLUG_archive``
$custom_post_type_description_filter_name = sprintf('amt_generic_description_posttype_%s_archive', $post_type_object->name);
// var_dump($custom_post_type_description_filter_name);
// Generic description
$generic_description = apply_filters($custom_post_type_description_filter_name, __('%s archive.', 'add-meta-tags'));
// Final generic description
$generic_description = sprintf($generic_description, post_type_archive_title($prefix = '', $display = false));
$metadata_arr[] = '<meta property="og:description" content="' . esc_attr(amt_process_paged($generic_description)) . '" />';
// Locale
$metadata_arr[] = '<meta property="og:locale" content="' . esc_attr(str_replace('-', '_', amt_get_language_site($options))) . '" />';
// Image
// Use a user defined image via filter. Otherwise use default image.
// First filter using a term/taxonomy agnostic filter name.
$posttype_image_url = apply_filters('amt_posttype_force_image_url', '', $post_type_object);
if (empty($posttype_image_url)) {
// Second filter (post type dependent).
// Construct the filter name. Template: ``amt_posttype_image_url_POSTTYPESLUG``
$posttype_image_url_filter_name = sprintf('amt_posttype_image_url_%s', $post_type_object->name);
//var_dump($posttype_image_url_filter_name);
// The default image, if set, is used by default.
$posttype_image_url = apply_filters($posttype_image_url_filter_name, $options["default_image_url"]);
}
if (!empty($posttype_image_url)) {
$image_data = amt_get_image_attributes_array($posttype_image_url);
if (!empty($image_data)) {
$image_size = apply_filters('amt_image_size_index', 'full');
$image_meta_tags = amt_get_opengraph_image_metatags($options, $image_data, $size = $image_size);
if (!empty($image_meta_tags)) {
$metadata_arr = array_merge($metadata_arr, $image_meta_tags);
}
}
//$metadata_arr[] = '<meta property="og:image" content="' . esc_url_raw( $posttype_image_url ) . '" />';
//if ( is_ssl() || ( ! is_ssl() && $options["has_https_access"] == "1" ) ) {
// $metadata_arr[] = '<meta property="og:image:secure_url" content="' . esc_url_raw( str_replace('http:', 'https:', $posttype_image_url ) ) . '" />';
//}
}
// Attachments
} elseif (is_attachment()) {
$mime_type = get_post_mime_type($post->ID);
//$attachment_type = strstr( $mime_type, '/', true );
// See why we do not use strstr(): http://www.codetrax.org/issues/1091
$attachment_type = preg_replace('#\\/[^\\/]*$#', '', $mime_type);
// First add metadata common to all attachment types.
// Type
// Note: there is no specific type for images/audio. We use article amd video
// TODO: Check whether we could use another type specific to each attachment type.
if ('video' == $attachment_type) {
// video.other og:type for video attachment pages
$og_type = 'video.other';
} else {
$og_type = 'article';
}
$og_type = apply_filters('amt_opengraph_og_type_attachment', $og_type);
$metadata_arr[] = '<meta property="og:type" content="' . esc_attr($og_type) . '" />';
// Site Name
$metadata_arr[] = '<meta property="og:site_name" content="' . esc_attr(get_bloginfo('name')) . '" />';
// Title
$metadata_arr['og:title'] = '<meta property="og:title" content="' . esc_attr(amt_get_title_for_metadata($options, $post)) . '" />';
// URL
$metadata_arr[] = '<meta property="og:url" content="' . esc_url_raw(get_permalink($post->ID)) . '" />';
// Description - We use the description defined by Add-Meta-Tags
$content_desc = amt_get_content_description($post);
if (!empty($content_desc)) {
$metadata_arr[] = '<meta property="og:description" content="' . esc_attr($content_desc) . '" />';
}
// Locale
$metadata_arr[] = '<meta property="og:locale" content="' . esc_attr(str_replace('-', '_', amt_get_language_content($options, $post))) . '" />';
// og:updated_time
$metadata_arr[] = '<meta property="og:updated_time" content="' . esc_attr(amt_iso8601_date($post->post_modified)) . '" />';
// Metadata specific to each attachment type
if ('image' == $attachment_type) {
// Allow filtering of the image size.
$image_size = apply_filters('amt_image_size_attachment', 'full');
$metadata_arr = array_merge($metadata_arr, amt_get_opengraph_image_metatags($options, $post->ID, $size = $image_size));
} elseif ('video' == $attachment_type) {
if ($options["og_omit_video_metadata"] != "1") {
// Video tags
$metadata_arr[] = '<meta property="og:video" content="' . esc_url_raw(wp_get_attachment_url($post->ID)) . '" />';
if (is_ssl() || !is_ssl() && $options["has_https_access"] == "1") {
$metadata_arr[] = '<meta property="og:video:secure_url" content="' . esc_url_raw(str_replace('http:', 'https:', wp_get_attachment_url($post->ID))) . '" />';
}
//
//$metadata_arr[] = '<meta property="og:video:width" content="' . esc_attr( $main_size_meta[1] ) . '" />';
//$metadata_arr[] = '<meta property="og:video:height" content="' . esc_attr( $main_size_meta[2] ) . '" />';
$metadata_arr[] = '<meta property="og:video:type" content="' . esc_attr($mime_type) . '" />';
}
} elseif ('audio' == $attachment_type) {
// Audio tags
$metadata_arr[] = '<meta property="og:audio" content="' . esc_url_raw(wp_get_attachment_url($post->ID)) . '" />';
if (is_ssl() || !is_ssl() && $options["has_https_access"] == "1") {
$metadata_arr[] = '<meta property="og:audio:secure_url" content="' . esc_url_raw(str_replace('http:', 'https:', wp_get_attachment_url($post->ID))) . '" />';
}
$metadata_arr[] = '<meta property="og:audio:type" content="' . esc_attr($mime_type) . '" />';
}
// Article: meta tags
// Dates
$metadata_arr[] = '<meta property="article:published_time" content="' . esc_attr(amt_iso8601_date($post->post_date)) . '" />';
$metadata_arr[] = '<meta property="article:modified_time" content="' . esc_attr(amt_iso8601_date($post->post_modified)) . '" />';
// Author
// If a Facebook author profile URL has been provided, it has priority,
// Otherwise fall back to the WordPress author archive.
$fb_author_url = get_the_author_meta('amt_facebook_author_profile_url', $post->post_author);
if (!empty($fb_author_url)) {
$metadata_arr[] = '<meta property="article:author" content="' . esc_url_raw($fb_author_url, array('http', 'https', 'mailto')) . '" />';
} else {
//$metadata_arr[] = '<meta property="article:author" content="' . esc_url_raw( get_author_posts_url( get_the_author_meta( 'ID', $post->post_author ) ) ) . '" />';
$metadata_arr[] = '<meta property="article:author" content="' . esc_url_raw(amt_get_local_author_profile_url(get_the_author_meta('ID', $post->post_author), $options)) . '" />';
}
// Publisher
// If a Facebook publisher profile URL has been provided, it has priority.
// Otherwise fall back to the WordPress blog home url.
if (!empty($options['social_main_facebook_publisher_profile_url'])) {
$metadata_arr[] = '<meta property="article:publisher" content="' . esc_url_raw($options['social_main_facebook_publisher_profile_url'], array('http', 'https', 'mailto')) . '" />';
} else {
$metadata_arr[] = '<meta property="article:publisher" content="' . esc_url_raw(trailingslashit(get_bloginfo('url'))) . '" />';
}
// Posts, pages, custom content types (attachments excluded, caught in previous clause)
// Note: content might be multipage. Process with amt_process_paged() wherever needed.
} elseif (is_singular()) {
// Site Name
$metadata_arr[] = '<meta property="og:site_name" content="' . esc_attr(get_bloginfo('name')) . '" />';
// Type
// og:type set to 'video.other' for posts with post format set to video
if (get_post_format($post->ID) == 'video') {
$og_type = 'video.other';
// og:type set to 'product' if amt_is_product() validates
// See:
// * https://developers.facebook.com/docs/reference/opengraph/object-type/product/
// * https://developers.facebook.com/docs/payments/product
} elseif (amt_is_product()) {
$og_type = 'product';
// In any other case 'article' is used as the og:type
} else {
$og_type = 'article';
}
// Allow filtering of og:type
$og_type = apply_filters('amt_opengraph_og_type_content', $og_type);
// Set og:type meta tag.
$metadata_arr[] = '<meta property="og:type" content="' . esc_attr($og_type) . '" />';
// Title
// Note: Contains multipage information
$metadata_arr['og:title'] = '<meta property="og:title" content="' . esc_attr(amt_get_title_for_metadata($options, $post)) . '" />';
// URL - Uses amt_get_permalink_for_multipage()
$metadata_arr[] = '<meta property="og:url" content="' . esc_url_raw(amt_get_permalink_for_multipage($post)) . '" />';
// Description - We use the description defined by Add-Meta-Tags
// Note: Contains multipage information through amt_process_paged()
$content_desc = amt_get_content_description($post);
if (!empty($content_desc)) {
$metadata_arr[] = '<meta property="og:description" content="' . esc_attr(amt_process_paged($content_desc)) . '" />';
}
// Locale
$metadata_arr[] = '<meta property="og:locale" content="' . esc_attr(str_replace('-', '_', amt_get_language_content($options, $post))) . '" />';
// og:updated_time
$metadata_arr[] = '<meta property="og:updated_time" content="' . esc_attr(amt_iso8601_date($post->post_modified)) . '" />';
// Image
// First check if a global image override URL has been entered.
// If yes, use this image URL and override all other images.
$image_data = amt_get_image_attributes_array(amt_get_post_meta_image_url($post->ID));
if (!empty($image_data)) {
$image_size = apply_filters('amt_image_size_content', 'full');
$image_meta_tags = amt_get_opengraph_image_metatags($options, $image_data, $size = $image_size);
if (!empty($image_meta_tags)) {
$metadata_arr = array_merge($metadata_arr, $image_meta_tags);
}
//$global_image_override_url = amt_get_post_meta_image_url($post->ID);
//if ( ! empty( $global_image_override_url ) ) {
// $metadata_arr[] = '<meta property="og:image" content="' . esc_url_raw( $global_image_override_url ) . '" />';
// if ( is_ssl() || ( ! is_ssl() && $options["has_https_access"] == "1" ) ) {
// $metadata_arr[] = '<meta property="og:image:secure_url" content="' . esc_url_raw( str_replace('http:', 'https:', $global_image_override_url ) ) . '" />';
// }
// Further image processing
} else {
// Media Limits
$image_limit = amt_metadata_get_image_limit($options);
$video_limit = amt_metadata_get_video_limit($options);
$audio_limit = amt_metadata_get_audio_limit($options);
// Counters
$ic = 0;
// image counter
$vc = 0;
// video counter
$ac = 0;
// audio counter
// We store the featured image ID in this variable so that it can easily be excluded
// when all images are parsed from the $attachments array.
$featured_image_id = 0;
// Set to true if any image attachments are found. Use to finally add the default image
// if no image attachments have been found.
$has_images = false;
if (function_exists('has_post_thumbnail') && has_post_thumbnail($post->ID)) {
// Allow filtering of the image size.
$image_size = apply_filters('amt_image_size_content', 'full');
$metadata_arr = array_merge($metadata_arr, amt_get_opengraph_image_metatags($options, get_post_thumbnail_id($post->ID), $size = $image_size));
// Finally, set the $featured_image_id
$featured_image_id = get_post_thumbnail_id($post->ID);
// Images have been found.
$has_images = true;
// Increase image counter
$ic++;
}
// Process all attachments and add metatags (featured image will be excluded)
foreach ($attachments as $attachment) {
// Excluded the featured image since
if ($attachment->ID != $featured_image_id) {
$mime_type = get_post_mime_type($attachment->ID);
//$attachment_type = strstr( $mime_type, '/', true );
// See why we do not use strstr(): http://www.codetrax.org/issues/1091
$attachment_type = preg_replace('#\\/[^\\/]*$#', '', $mime_type);
if ('image' == $attachment_type && $ic < $image_limit) {
// Image tags
// Allow filtering of the image size.
$image_size = apply_filters('amt_image_size_content', 'full');
$metadata_arr = array_merge($metadata_arr, amt_get_opengraph_image_metatags($options, $attachment->ID, $size = $image_size));
// Images have been found.
$has_images = true;
// Increase image counter
$ic++;
} elseif ('video' == $attachment_type && $vc < $video_limit) {
if ($options["og_omit_video_metadata"] != "1") {
// Video tags
$metadata_arr[] = '<meta property="og:video" content="' . esc_url_raw(wp_get_attachment_url($attachment->ID)) . '" />';
if (is_ssl() || !is_ssl() && $options["has_https_access"] == "1") {
$metadata_arr[] = '<meta property="og:video:secure_url" content="' . esc_url_raw(str_replace('http:', 'https:', wp_get_attachment_url($attachment->ID))) . '" />';
}
//$metadata_arr[] = '<meta property="og:video:width" content="' . esc_attr( $main_size_meta[1] ) . '" />';
//$metadata_arr[] = '<meta property="og:video:height" content="' . esc_attr( $main_size_meta[2] ) . '" />';
$metadata_arr[] = '<meta property="og:video:type" content="' . esc_attr($mime_type) . '" />';
// Increase video counter
$vc++;
}
} elseif ('audio' == $attachment_type && $ac < $audio_limit) {
// Audio tags
$metadata_arr[] = '<meta property="og:audio" content="' . esc_url_raw(wp_get_attachment_url($attachment->ID)) . '" />';
if (is_ssl() || !is_ssl() && $options["has_https_access"] == "1") {
$metadata_arr[] = '<meta property="og:audio:secure_url" content="' . esc_url_raw(str_replace('http:', 'https:', wp_get_attachment_url($attachment->ID))) . '" />';
}
$metadata_arr[] = '<meta property="og:audio:type" content="' . esc_attr($mime_type) . '" />';
// Increase audio counter
$ac++;
}
}
}
// Embedded Media
foreach ($embedded_media['images'] as $embedded_item) {
if ($ic == $image_limit) {
break;
}
$metadata_arr[] = '<meta property="og:image" content="' . esc_url_raw($embedded_item['image']) . '" />';
$metadata_arr[] = '<meta property="og:image:secure_url" content="' . esc_url_raw(str_replace('http:', 'https:', $embedded_item['image'])) . '" />';
if (apply_filters('amt_extended_image_tags', true)) {
$metadata_arr[] = '<meta property="og:image:width" content="' . esc_attr($embedded_item['width']) . '" />';
$metadata_arr[] = '<meta property="og:image:height" content="' . esc_attr($embedded_item['height']) . '" />';
$metadata_arr[] = '<meta property="og:image:type" content="image/jpeg" />';
}
// Images have been found.
$has_images = true;
// Increase image counter
$ic++;
}
foreach ($embedded_media['videos'] as $embedded_item) {
if ($options["og_omit_video_metadata"] != "1") {
if ($vc == $video_limit) {
break;
}
$metadata_arr[] = '<meta property="og:video" content="' . esc_url_raw($embedded_item['player']) . '" />';
$metadata_arr[] = '<meta property="og:video:secure_url" content="' . esc_url_raw(str_replace('http:', 'https:', $embedded_item['player'])) . '" />';
$metadata_arr[] = '<meta property="og:video:type" content="application/x-shockwave-flash" />';
$metadata_arr[] = '<meta property="og:video:width" content="' . esc_attr($embedded_item['width']) . '" />';
$metadata_arr[] = '<meta property="og:video:height" content="' . esc_attr($embedded_item['height']) . '" />';
// Increase video counter
$vc++;
}
}
foreach ($embedded_media['sounds'] as $embedded_item) {
if ($ac == $audio_limit) {
break;
}
$metadata_arr[] = '<meta property="og:audio" content="' . esc_url_raw($embedded_item['player']) . '" />';
$metadata_arr[] = '<meta property="og:audio:secure_url" content="' . esc_url_raw(str_replace('http:', 'https:', $embedded_item['player'])) . '" />';
$metadata_arr[] = '<meta property="og:audio:type" content="application/x-shockwave-flash" />';
// Increase audio counter
$ac++;
}
// If no images have been found so far use the default image, if set.
if ($has_images === false) {
// Use the default image, if one has been set.
$image_data = amt_get_default_image_data();
if (!empty($image_data)) {
$image_size = apply_filters('amt_image_size_content', 'full');
$image_meta_tags = amt_get_opengraph_image_metatags($options, $image_data, $size = $image_size);
if (!empty($image_meta_tags)) {
$metadata_arr = array_merge($metadata_arr, $image_meta_tags);
}
}
//$metadata_arr[] = '<meta property="og:image" content="' . esc_url_raw( $options["default_image_url"] ) . '" />';
//if ( is_ssl() || ( ! is_ssl() && $options["has_https_access"] == "1" ) ) {
// $metadata_arr[] = '<meta property="og:image:secure_url" content="' . esc_url_raw( str_replace('http:', 'https:', $options["default_image_url"] ) ) . '" />';
//}
}
}
// og:referenced
$referenced_url_list = amt_get_referenced_items($post);
foreach ($referenced_url_list as $referenced_url) {
$referenced_url = trim($referenced_url);
if (!empty($referenced_url)) {
$metadata_arr[] = '<meta property="og:referenced" content="' . esc_url_raw($referenced_url) . '" />';
}
}
// Article: meta tags
if ($og_type == 'article') {
// Dates
$metadata_arr[] = '<meta property="article:published_time" content="' . esc_attr(amt_iso8601_date($post->post_date)) . '" />';
$metadata_arr[] = '<meta property="article:modified_time" content="' . esc_attr(amt_iso8601_date($post->post_modified)) . '" />';
// Author
// If a Facebook author profile URL has been provided, it has priority,
// Otherwise fall back to the WordPress author archive.
$fb_author_url = get_the_author_meta('amt_facebook_author_profile_url', $post->post_author);
if (!empty($fb_author_url)) {
$metadata_arr[] = '<meta property="article:author" content="' . esc_url_raw($fb_author_url, array('http', 'https', 'mailto')) . '" />';
} else {
//$metadata_arr[] = '<meta property="article:author" content="' . esc_url_raw( get_author_posts_url( get_the_author_meta( 'ID', $post->post_author ) ) ) . '" />';
$metadata_arr[] = '<meta property="article:author" content="' . esc_url_raw(amt_get_local_author_profile_url(get_the_author_meta('ID', $post->post_author), $options)) . '" />';
}
// Publisher
// If a Facebook publisher profile URL has been provided, it has priority.
// Otherwise fall back to the WordPress blog home url.
if (!empty($options['social_main_facebook_publisher_profile_url'])) {
$metadata_arr[] = '<meta property="article:publisher" content="' . esc_url_raw($options['social_main_facebook_publisher_profile_url'], array('http', 'https', 'mailto')) . '" />';
} else {
$metadata_arr[] = '<meta property="article:publisher" content="' . esc_url_raw(trailingslashit(get_bloginfo('url'))) . '" />';
}
/*
// article:section: We use the first category as the section.
$first_cat = amt_get_first_category($post);
if ( ! empty( $first_cat ) ) {
$metadata_arr[] = '<meta property="article:section" content="' . esc_attr( $first_cat ) . '" />';
}
*/
// article:section: We use print an ``article:section`` meta tag for each of the post's categories.
$categories = get_the_category($post->ID);
$categories = apply_filters('amt_post_categories_for_opengraph', $categories);
foreach ($categories as $cat) {
$section = trim($cat->cat_name);
if (!empty($section) && $cat->slug != 'uncategorized') {
$metadata_arr[] = '<meta property="article:section" content="' . esc_attr($section) . '" />';
}
}
// article:tag: Keywords are listed as post tags
$keywords = explode(',', amt_get_content_keywords($post, $auto = true, $exclude_categories = true));
foreach ($keywords as $tag) {
$tag = trim($tag);
if (!empty($tag)) {
$metadata_arr[] = '<meta property="article:tag" content="' . esc_attr($tag) . '" />';
}
}
} elseif ($og_type == 'video.other') {
// Dates
$metadata_arr[] = '<meta property="video:release_date" content="' . esc_attr(amt_iso8601_date($post->post_date)) . '" />';
// video:tag: Keywords are listed as post tags
$keywords = explode(',', amt_get_content_keywords($post));
foreach ($keywords as $tag) {
$tag = trim($tag);
if (!empty($tag)) {
$metadata_arr[] = '<meta property="video:tag" content="' . esc_attr($tag) . '" />';
}
}
} elseif ($og_type == 'product') {
// Extend the current metadata with properties of the Product object.
// See:
// * https://developers.facebook.com/docs/reference/opengraph/object-type/product/
// * https://developers.facebook.com/docs/payments/product
$metadata_arr = apply_filters('amt_product_data_opengraph', $metadata_arr, $post);
}
}
// Filtering of the generated Opengraph metadata
$metadata_arr = apply_filters('amt_opengraph_metadata_head', $metadata_arr);
return $metadata_arr;
}
/**
* Generates basic metadata for the head area.
*
*/
function amt_add_basic_metadata_head($post, $attachments, $embedded_media, $options)
{
if (apply_filters('amt_exclude_basic_metadata', false)) {
return array();
}
$do_description = $options["auto_description"] == "1" ? true : false;
$do_keywords = $options["auto_keywords"] == "1" ? true : false;
$do_noodp_description = $options["noodp_description"] == "1" ? true : false;
// Array to store metadata
$metadata_arr = array();
// Pre-processing
// Store hreflang links in array
$hreflang_links_arr = array();
// Store base robots options
$robots_options = array();
if ($do_noodp_description && (is_front_page() || is_singular() || is_category() || is_tag() || is_tax() || is_author())) {
// Add NOODP on posts and pages
$robots_options[] = 'noodp';
$robots_options[] = 'noydir';
}
// Store full meta tags (site wide and post specific)
// Add site wide meta tags
$full_metatags_as_string = '';
if (!empty($options['site_wide_meta'])) {
$full_metatags_for_site = html_entity_decode(stripslashes($options['site_wide_meta']));
$full_metatags_as_string .= apply_filters('amt_full_metatags_site', $full_metatags_for_site);
$full_metatags_as_string .= PHP_EOL;
}
// Full meta tags
if (is_singular() || amt_is_static_front_page() || amt_is_static_home()) {
// per post full meta tags
$full_metatags_for_content = amt_get_post_meta_full_metatags($post->ID);
$full_metatags_for_content = html_entity_decode(stripslashes($full_metatags_for_content));
$full_metatags_as_string .= apply_filters('amt_full_metatags_post', $full_metatags_for_content);
} elseif (is_category() || is_tag() || is_tax()) {
// Term specific full meta tags ($post is a term object)
$full_metatags_for_term = amt_get_term_meta_full_metatags($post->term_id);
$full_metatags_for_term = html_entity_decode(stripslashes($full_metatags_for_term));
$full_metatags_as_string .= apply_filters('amt_full_metatags_term', $full_metatags_for_term);
} elseif (is_author()) {
// User specific full meta tags ($post is a user object)
$full_metatags_for_user = amt_get_user_meta_full_metatags($post->ID);
$full_metatags_for_user = html_entity_decode(stripslashes($full_metatags_for_user));
$full_metatags_as_string .= apply_filters('amt_full_metatags_term', $full_metatags_for_user);
}
// Sanitize
//$full_metatags_as_string = esc_textarea( wp_kses( $full_metatags_as_string, amt_get_allowed_html_kses() ) );
$full_metatags_as_string = wp_kses($full_metatags_as_string, amt_get_allowed_html_kses());
// Make array of full meta tags
$full_meta_tags = preg_split('#\\R#', $full_metatags_as_string, NULL, PREG_SPLIT_NO_EMPTY);
// Process
if (apply_filters('amt_full_metatags_processor_enable', true)) {
// Store processed meta tags here
$processed_full_meta_tags = array();
// Field substitutions currently take place only on content pages.
// TODO: See if this can be expanded to terms, authors.
// Store the post's custom fields
$custom_fields = null;
// Store the post object's custom fields.
//
if (is_singular() || amt_is_static_front_page() || amt_is_static_home()) {
// Get an array of all custom fields names of the post object.
$custom_fields = get_post_custom_keys($post->ID);
}
// Iterate over full meta tags
foreach ($full_meta_tags as $single_meta_tag) {
// Note: Field value substitutions take place first, outside the elseif clauses.
// Process substitutions of special notation with data from Custom Fields
// Supported special notation:
// [field=Field Name]
// Notes:
// - 'Field Name' is the name of custom field.
// - If the custom field with name 'Field Name' does not exist, the meta tag
// that contains it is omitted.
// - If the value of the field is an empty string, then the substitution
// takes place normally.
//
// The regex pattern fo our special notation.
$special_notation_pattern = '#(?:\\[field\\=)([^\\]]+)(?:\\])#';
// The following covers content pages, as $custom_fields is only set on content pages. See above.
if (!empty($custom_fields) && isset($post->ID)) {
// This also assumes that we have a post object since custom fields
// are set only on content pages, otherwise it is null.
// Check for special notation
if (preg_match($special_notation_pattern, $single_meta_tag, $matches)) {
//var_dump($matches);
// If the field name of the special notation does not match
// any custom field name, omit the meta tag as per the rules above.
if (!in_array($matches[1], $custom_fields)) {
continue;
}
// Since there is special notation and the field name from the special
// notation exists in the $custom_fields array, iterate over the available
// custom fields and perform the substitutions.
foreach ($custom_fields as $custom_field) {
// Check if it matches the field name of the special notation
if ($custom_field == $matches[1]) {
// Fetch the custom field's value
$field_value = get_post_meta($post->ID, $custom_field, true);
// Sanitize value
// TODO: this can be a problem depending on the value and the used sanitization function.
$field_value = esc_attr(sanitize_text_field($field_value));
// Perform the substitution even if the the value is an empty string as per the rules above
$single_meta_tag = str_replace(sprintf('[field=%s]', $custom_field), $field_value, $single_meta_tag);
}
}
}
} else {
// In any other case, just remove the meta tags which contain the special notation.
if (preg_match($special_notation_pattern, $single_meta_tag, $tmp)) {
continue;
}
}
// Process the PAGEINFO variable.
// If the current page is the 1st page of any archive or of multipage content,
// PAGEINFO is just stripped. For subsequent pages of archives or multipage
// content, PAGEINFO is replaced with page based path (page/N/ for archives or N/ for multipage content)
//
// For paginated archives or paginated main page with latest posts.
$has_paging_info = false;
if (is_paged()) {
$paged = get_query_var('paged');
// paged
if ($paged && $paged >= 2) {
$single_meta_tag = str_replace('PAGEINFO', 'page/' . $paged . '/', $single_meta_tag);
$has_paging_info = true;
}
// For a Post or Page that has been divided into pages using the <!--nextpage--> QuickTag
} else {
$paged = get_query_var('page');
// page
if ($paged && $paged >= 2) {
$single_meta_tag = str_replace('PAGEINFO', $paged . '/', $single_meta_tag);
$has_paging_info = true;
}
}
// If this is not paged, strip PAGEINFO
if ($has_paging_info === false) {
$single_meta_tag = str_replace('PAGEINFO', '', $single_meta_tag);
}
// Process custom canonical link
// If a rel="canonical" meta tags exists, we deactivate WordPress' 'rel_canonical' action,
// Since it is assumed that a custom canonical link has been added.
//if ( preg_match( '# rel="canonical" #', $post_full_meta_tags, $tmp ) ) {
if (strpos($single_meta_tag, ' rel="canonical" ') !== false) {
// Remove default WordPress action
remove_action('wp_head', 'rel_canonical');
} elseif (strpos($single_meta_tag, ' name="robots" ') !== false) {
if (preg_match('# content="([^"]+)" #', $single_meta_tag, $matches)) {
$tmp_robots_opts = explode(',', $matches[1]);
foreach ($tmp_robots_opts as $single_robots_option) {
$single_robots_option_cleaned = strtolower(trim($single_robots_option));
if (!empty($single_robots_option_cleaned)) {
$robots_options[] = $single_robots_option_cleaned;
}
}
}
// We simply collect options. Do not add any robots meta tags to the processed meta tags array.
continue;
} elseif (strpos($single_meta_tag, ' hreflang="') !== false) {
// Simply add to the hreflang links array for later processing
$hreflang_links_arr[] = $single_meta_tag;
// We simply collect hreflang links for later processing. Do not add them to the processed meta tags array.
continue;
}
// If we have reached here, add the meta tags to the array with processed meta tags.
$processed_full_meta_tags[] = $single_meta_tag;
}
} else {
// Full meta tags processor not enabled
$processed_full_meta_tags = $full_meta_tags;
}
//var_dump($full_meta_tags);
//var_dump($processed_full_meta_tags);
// Add Meta Tags
// Add a robots meta tag if robots options exist.
// Backwards compatible filter. TODO: This is deprecated. Needs to be deleted after a while.
$old_options_as_string = apply_filters('amt_robots_data', '');
if (!empty($old_options_as_string)) {
foreach (explode(',', $old_options_as_string) as $single_robots_option) {
$single_robots_option_cleaned = strtolower(trim($single_robots_option));
if (!empty($single_robots_option_cleaned)) {
$robots_options[] = $single_robots_option_cleaned;
}
}
}
// Add robot_options filtering
$robots_options = apply_filters('amt_robots_options', $robots_options);
if (version_compare(PHP_VERSION, '5.3', '<')) {
// The flag is not supported
$robots_options = array_unique($robots_options);
} else {
$robots_options = array_unique($robots_options, SORT_STRING);
}
if (!empty($robots_options)) {
$metadata_arr['basic:robots'] = '<meta name="robots" content="' . esc_attr(implode(',', $robots_options)) . '" />';
}
// Add full meta tags
// Merge meta tags
$processed_full_meta_tags = apply_filters('amt_full_metatags_processed', $processed_full_meta_tags);
if (!empty($processed_full_meta_tags)) {
$metadata_arr = array_merge($metadata_arr, $processed_full_meta_tags);
}
// Add copyright link
// On every page print the copyright head link
$copyright_url = amt_get_site_copyright_url($options);
//if ( empty($copyright_url)) {
// $copyright_url = trailingslashit( get_bloginfo('url') );
//}
if (!empty($copyright_url)) {
$metadata_arr['basic:copyright'] = '<link rel="copyright" type="text/html" title="' . esc_attr(get_bloginfo('name')) . ' ' . __('copyright information', 'add-meta-tags') . '" href="' . esc_url($copyright_url) . '" />';
}
// hreflang link element
// This section also expects an array of extra hreflang links that may have
// been collected from the full meta tags boxes.
if ($options['generate_hreflang_links'] == '1') {
if (is_singular()) {
$locale = amt_get_language_content($options, $post);
$hreflang = amt_get_the_hreflang($locale, $options);
$hreflang_url = amt_get_permalink_for_multipage($post);
} else {
$locale = amt_get_language_site($options);
$hreflang = amt_get_the_hreflang($locale, $options);
$hreflang_url = '';
if (amt_is_default_front_page()) {
$hreflang_url = trailingslashit(get_bloginfo('url'));
} elseif (is_category() || is_tag() || is_tax()) {
// $post is a term object
$hreflang_url = get_term_link($post);
} elseif (is_author()) {
// $post is an author object
$hreflang_url = get_author_posts_url($post->ID);
} elseif (is_year()) {
$archive_year = get_the_time('Y');
$hreflang_url = get_year_link($archive_year);
} elseif (is_month()) {
$archive_year = get_the_time('Y');
$archive_month = get_the_time('m');
$hreflang_url = get_month_link($archive_year, $archive_month);
} elseif (is_day()) {
$archive_year = get_the_time('Y');
$archive_month = get_the_time('m');
$archive_day = get_the_time('d');
$hreflang_url = get_day_link($archive_year, $archive_month, $archive_day);
}
// If paged information is available
if (is_paged()) {
//$hreflang_url = trailingslashit( $hreflang_url ) . get_query_var('paged') . '/';
$hreflang_url = get_pagenum_link(get_query_var('paged'));
}
}
// hreflang links array
$hreflang_arr = array();
// Add link element
if (!empty($hreflang) && !empty($hreflang_url)) {
$hreflang_arr[] = '<link rel="alternate" hreflang="' . esc_attr($hreflang) . '" href="' . esc_url_raw($hreflang_url) . '" />';
}
// Add extra hreflang links that have been collected from the full meta tags boxes
if (!empty($hreflang_links_arr)) {
$hreflang_arr = array_merge($hreflang_arr, $hreflang_links_arr);
}
// Allow filtering of the hreflang array
$hreflang_arr = apply_filters('amt_hreflang_links', $hreflang_arr);
// Add to to metadata array
foreach ($hreflang_arr as $hreflang_link) {
if (preg_match('# hreflang="([^"]+)" #', $hreflang_link, $matches)) {
$metadata_arr['basic:hreflang:' . $matches[1]] = $hreflang_link;
}
}
}
// Basic Meta Tags
// Custom content override
if (amt_is_custom($post, $options)) {
// Return metadata with:
// add_filter( 'amt_custom_metadata_basic', 'my_function', 10, 5 );
// Return an array of meta tags. Array item format: ['key_can_be_whatever'] = '<meta name="foo" content="bar" />'
$metadata_arr = apply_filters('amt_custom_metadata_basic', $metadata_arr, $post, $options, $attachments, $embedded_media);
// Default front page displaying latest posts
} elseif (amt_is_default_front_page()) {
// Description and Keywords from the Add-Meta-Tags settings override
// default behaviour.
// Description
if ($do_description) {
// Use the site description from the Add-Meta-Tags settings.
// Fall back to the blog description.
$site_description = amt_get_site_description($options);
if (empty($site_description)) {
// Alternatively, use the blog description
// Here we sanitize the provided description for safety
$site_description = sanitize_text_field(amt_sanitize_description(get_bloginfo('description')));
}
// If we have a description, use it in the description meta-tag of the front page
if (!empty($site_description)) {
// Note: Contains multipage information through amt_process_paged()
$metadata_arr['basic:description'] = '<meta name="description" content="' . esc_attr(amt_process_paged($site_description)) . '" />';
}
}
// Keywords
if ($do_keywords) {
// Use the site keywords from the Add-Meta-Tags settings.
// Fall back to the blog categories.
$site_keywords = amt_get_site_keywords($options);
if (empty($site_keywords)) {
// Alternatively, use the blog categories
// Here we sanitize the provided keywords for safety
$site_keywords = sanitize_text_field(amt_sanitize_keywords(amt_get_all_categories()));
}
// If we have keywords, use them in the keywords meta-tag of the front page
if (!empty($site_keywords)) {
$metadata_arr['basic:keywords'] = '<meta name="keywords" content="' . esc_attr($site_keywords) . '" />';
}
}
// Attachments
} elseif (is_attachment()) {
// has to be before is_singular() since is_singular() is true for attachments.
// Description
if ($do_description) {
$description = amt_get_content_description($post, $auto = $do_description);
if (!empty($description)) {
// Note: Contains multipage information through amt_process_paged()
$metadata_arr['basic:description'] = '<meta name="description" content="' . esc_attr(amt_process_paged($description)) . '" />';
}
}
// No keywords
// Content pages and static pages used as "front page" and "posts page"
// This also supports products via is_singular()
} elseif (is_singular() || amt_is_static_front_page() || amt_is_static_home()) {
// Description
if ($do_description) {
$description = amt_get_content_description($post, $auto = $do_description);
if (!empty($description)) {
// Note: Contains multipage information through amt_process_paged()
$metadata_arr['basic:description'] = '<meta name="description" content="' . esc_attr(amt_process_paged($description)) . '" />';
}
}
// Keywords
if ($do_keywords) {
$keywords = amt_get_content_keywords($post, $auto = $do_keywords);
if (!empty($keywords)) {
$metadata_arr['basic:keywords'] = '<meta name="keywords" content="' . esc_attr($keywords) . '" />';
// Static Posts Index Page
// If no keywords have been set in the metabox and this is the static page,
// which displayes the latest posts, use the categories of the posts in the loop.
} elseif (amt_is_static_home()) {
// Here we sanitize the provided keywords for safety
$cats_from_loop = sanitize_text_field(amt_sanitize_keywords(implode(', ', amt_get_categories_from_loop())));
if (!empty($cats_from_loop)) {
$metadata_arr['basic:keywords'] = '<meta name="keywords" content="' . esc_attr($cats_from_loop) . '" />';
}
}
}
// 'news_keywords'
$newskeywords = amt_get_post_meta_newskeywords($post->ID);
if (!empty($newskeywords)) {
$metadata_arr['basic:news_keywords'] = '<meta name="news_keywords" content="' . esc_attr($newskeywords) . '" />';
}
// Category based archives
} elseif (is_category()) {
if ($do_description) {
// If set, the description of the category is used in the 'description' metatag.
// Otherwise, a generic description is used.
// Here we sanitize the provided description for safety
$description_content = sanitize_text_field(amt_sanitize_description(category_description()));
// Note: Contains multipage information through amt_process_paged()
if (empty($description_content)) {
// Add a filtered generic description.
$generic_description = apply_filters('amt_generic_description_category_archive', __('Content filed under the %s category.', 'add-meta-tags'));
$generic_description = sprintf($generic_description, single_cat_title($prefix = '', $display = false));
$metadata_arr['basic:description'] = '<meta name="description" content="' . esc_attr(amt_process_paged($generic_description)) . '" />';
} else {
$metadata_arr['basic:description'] = '<meta name="description" content="' . esc_attr(amt_process_paged($description_content)) . '" />';
}
}
if ($do_keywords) {
// The category name alone is included in the 'keywords' metatag
// Here we sanitize the provided keywords for safety
$cur_cat_name = sanitize_text_field(amt_sanitize_keywords(single_cat_title($prefix = '', $display = false)));
if (!empty($cur_cat_name)) {
$metadata_arr['basic:keywords'] = '<meta name="keywords" content="' . esc_attr($cur_cat_name) . '" />';
}
}
} elseif (is_tag()) {
if ($do_description) {
// If set, the description of the tag is used in the 'description' metatag.
// Otherwise, a generic description is used.
// Here we sanitize the provided description for safety
$description_content = sanitize_text_field(amt_sanitize_description(tag_description()));
// Note: Contains multipage information through amt_process_paged()
if (empty($description_content)) {
// Add a filtered generic description.
$generic_description = apply_filters('amt_generic_description_tag_archive', __('Content tagged with %s.', 'add-meta-tags'));
$generic_description = sprintf($generic_description, single_tag_title($prefix = '', $display = false));
$metadata_arr['basic:description'] = '<meta name="description" content="' . esc_attr(amt_process_paged($generic_description)) . '" />';
} else {
$metadata_arr['basic:description'] = '<meta name="description" content="' . esc_attr(amt_process_paged($description_content)) . '" />';
}
}
if ($do_keywords) {
// The tag name alone is included in the 'keywords' metatag
// Here we sanitize the provided keywords for safety
$cur_tag_name = sanitize_text_field(amt_sanitize_keywords(single_tag_title($prefix = '', $display = false)));
if (!empty($cur_tag_name)) {
$metadata_arr['basic:keywords'] = '<meta name="keywords" content="' . esc_attr($cur_tag_name) . '" />';
}
}
// Custom taxonomies - Should be after is_category() and is_tag(), as it would catch those taxonomies as well.
// This also supports product groups via is_tax(). Only product groups that are WordPress custom taxonomies are supported.
} elseif (is_tax()) {
// Taxonomy term object.
// When viewing taxonomy archives, the $post object is the taxonomy term object. Check with: var_dump($post);
$tax_term_object = $post;
//var_dump($tax_term_object);
if ($do_description) {
// If set, the description of the custom taxonomy term is used in the 'description' metatag.
// Otherwise, a generic description is used.
// Here we sanitize the provided description for safety
$description_content = sanitize_text_field(amt_sanitize_description(term_description($tax_term_object->term_id, $tax_term_object->taxonomy)));
// Note: Contains multipage information through amt_process_paged()
if (empty($description_content)) {
// Add a filtered generic description.
// Construct the filter name. Template: ``amt_generic_description_TAXONOMYSLUG_archive``
$taxonomy_description_filter_name = sprintf('amt_generic_description_%s_archive', $tax_term_object->taxonomy);
// var_dump($taxonomy_description_filter_name);
$generic_description = apply_filters($taxonomy_description_filter_name, __('Content filed under the %s taxonomy.', 'add-meta-tags'));
$generic_description = sprintf($generic_description, single_term_title($prefix = '', $display = false));
$metadata_arr['basic:description'] = '<meta name="description" content="' . esc_attr(amt_process_paged($generic_description)) . '" />';
} else {
$metadata_arr['basic:description'] = '<meta name="description" content="' . esc_attr(amt_process_paged($description_content)) . '" />';
}
}
if ($do_keywords) {
// The taxonomy term name alone is included in the 'keywords' metatag.
// Here we sanitize the provided keywords for safety.
$cur_tax_term_name = sanitize_text_field(amt_sanitize_keywords(single_term_title($prefix = '', $display = false)));
if (!empty($cur_tax_term_name)) {
$metadata_arr['basic:keywords'] = '<meta name="keywords" content="' . esc_attr($cur_tax_term_name) . '" />';
}
}
} elseif (is_author()) {
// Author object
// NOTE: Inside the author archives `$post->post_author` does not contain the author object.
// In this case the $post (get_queried_object()) contains the author object itself.
// We also can get the author object with the following code. Slug is what WP uses to construct urls.
// $author = get_user_by( 'slug', get_query_var( 'author_name' ) );
// Also, ``get_the_author_meta('....', $author)`` returns nothing under author archives.
// Access user meta with: $author->description, $author->user_email, etc
// $author = get_queried_object();
$author = $post;
// If a bio has been set in the user profile, use it in the description metatag of the
// first page of the author archive *ONLY*. The other pages of the author archive use a generic description.
// This happens because the 1st page of the author archive is considered the profile page
// by the other metadata modules.
// Otherwise use a generic meta tag.
if ($do_description) {
// Here we sanitize the provided description for safety
$author_description = sanitize_text_field(amt_sanitize_description($author->description));
if (empty($author_description) || is_paged()) {
// Note: Contains multipage information through amt_process_paged()
// Add a filtered generic description.
$generic_description = apply_filters('amt_generic_description_author_archive', __('Content published by %s.', 'add-meta-tags'));
$generic_description = sprintf($generic_description, $author->display_name);
$metadata_arr['basic:description'] = '<meta name="description" content="' . esc_attr(amt_process_paged($generic_description)) . '" />';
} else {
$metadata_arr['basic:description'] = '<meta name="description" content="' . esc_attr($author_description) . '" />';
}
}
// For the keywords metatag use the categories of the posts the author has written and are displayed in the current page.
if ($do_keywords) {
// Here we sanitize the provided keywords for safety
$cats_from_loop = sanitize_text_field(amt_sanitize_keywords(implode(', ', amt_get_categories_from_loop())));
if (!empty($cats_from_loop)) {
$metadata_arr['basic:keywords'] = '<meta name="keywords" content="' . esc_attr($cats_from_loop) . '" />';
}
}
// Custom Post Type Archive
} elseif (is_post_type_archive()) {
// Custom post type object.
// When viewing custom post type archives, the $post object is the custom post type object. Check with: var_dump($post);
$post_type_object = $post;
//var_dump($post_type_object);
if ($do_description) {
// Description
// Note: Contains multipage information through amt_process_paged()
// Add a filtered generic description.
// Construct the filter name. Template: ``amt_generic_description_posttype_POSTTYPESLUG_archive``
$custom_post_type_description_filter_name = sprintf('amt_generic_description_posttype_%s_archive', $post_type_object->name);
// var_dump($custom_post_type_description_filter_name);
// Generic description
$generic_description = apply_filters($custom_post_type_description_filter_name, __('%s archive.', 'add-meta-tags'));
// Final generic description
$generic_description = sprintf($generic_description, post_type_archive_title($prefix = '', $display = false));
$metadata_arr['basic:description'] = '<meta name="description" content="' . esc_attr(amt_process_paged($generic_description)) . '" />';
}
// For the keywords metatag use the categories of the posts that are listed in the current page.
if ($do_keywords) {
// Here we sanitize the provided keywords for safety
$cats_from_loop = sanitize_text_field(amt_sanitize_keywords(implode(', ', amt_get_categories_from_loop())));
if (!empty($cats_from_loop)) {
$metadata_arr['basic:keywords'] = '<meta name="keywords" content="' . esc_attr($cats_from_loop) . '" />';
}
}
}
// Filtering of the generated basic metadata
$metadata_arr = apply_filters('amt_basic_metadata_head', $metadata_arr);
return $metadata_arr;
}
function amt_metadata_analysis($default_text, $metadata_block_head, $metadata_block_footer, $metadata_block_content_filter)
{
// Analysis is appended only o content pages
if (!is_singular()) {
return $default_text;
}
// Check the filter based switch
if (!apply_filters('amt_metadata_analysis_enable', true)) {
return $default_text;
}
//
// Collect data
//
$options = amt_get_options();
$post = amt_get_queried_object();
if (!isset($post->ID) || $post->ID <= 0) {
return $default_text;
}
// Content and stats
// Post content
$post_content = strtolower(amt_get_clean_post_content($options, $post));
$post_content_length = strlen($post_content);
//var_dump($post_content);
// Total words
if (function_exists('wordstats_words')) {
$post_word_count = wordstats_words($post_content);
// provided by the word-statistics-plugin by FD
} else {
$post_word_count = str_word_count($post_content);
}
// Total sentences
if (function_exists('wordstats_sentences')) {
$post_sentence_count = wordstats_sentences($post_content);
// provided by the word-statistics-plugin by FD
} else {
$post_sentence_count = preg_match_all('/[.!?\\r]/', $post_content, $dummy);
}
// Total syllables
// TODO: Find better function
$post_syllable_count = preg_match_all('/[aeiouy]/', $post_content, $dummy);
// Titles
// Original
$post_title = strtolower(strip_tags(get_the_title($post->ID)));
// Title HTML element
if ($options['enable_advanced_title_management'] == '1') {
// If Advanced Title management is enabled, use this directly:
$post_title_html_element = strtolower(amt_get_title_for_title_element($options, $post));
} else {
if (version_compare(get_bloginfo('version'), '4.4', '>=')) {
// Since WP 4.4
// - https://make.wordpress.org/core/2015/10/20/document-title-in-4-4/
//$post_title_html_element = strtolower( apply_filters('document_title_parts', array('title' => $post_title) ) );
//$post_title_html_element = wp_get_document_title();
$post_title_html_element = strtolower(get_wp_title_rss());
} else {
// Reverting back to the one argument version of the fitlering function.
//$post_title_html_element = strtolower( apply_filters('wp_title', $post_title) );
// Until testing is performed on old WP versions we just use post title
$post_title_html_element = $post_title;
}
}
//var_dump($post_title_html_element);
// Title in metadata
$post_title_metadata = strtolower(amt_get_title_for_metadata($options, $post));
//var_dump($post_title_metadata);
// URL
$post_url = str_replace(get_bloginfo('url'), '', amt_get_permalink_for_multipage($post));
//var_dump($post_url);
// Description
$description = '';
if (array_key_exists('basic:description', $metadata_block_head)) {
$description = strtolower(preg_replace('#^.*content="([^"]+)".*$#', '$1', $metadata_block_head['basic:description']));
}
//var_dump($description);
// Keywords
$keywords = array();
if (array_key_exists('basic:keywords', $metadata_block_head)) {
$keywords_content = strtolower(preg_replace('#^.*content="([^"]+)".*$#', '$1', $metadata_block_head['basic:keywords']));
$keywords = explode(',', str_replace(', ', ',', $keywords_content));
}
//var_dump($keywords);
// Keyword matching pattern
//$keyword_matching_pattern = '#(?:%s)#';
//$keyword_matching_pattern = '#(?:%s)[[:^alpha:]]#';
//$keyword_matching_pattern = '#(?:%s)[[:^alpha:]]?#';
$keyword_matching_pattern = '#(?:%s)(?:[[:^alpha:]]|$)#';
$keyword_matching_pattern = apply_filters('amt_metadata_analysis_keyword_matching_pattern', $keyword_matching_pattern);
// Whether to use topic keywords field or the keywords from the 'keywords' meta tag.
$use_keywords = false;
// First check for a field that contains topic keywords.
$topic_keywords_field_name = apply_filters('amt_metadata_analysis_topic_keywords_field', 'topic_keywords');
$topic_keywords_field_value = get_post_meta($post->ID, $topic_keywords_field_name, true);
if (!empty($topic_keywords_field_value)) {
$topic_keywords = explode(',', str_replace(', ', ',', $topic_keywords_field_value));
} else {
$topic_keywords = $keywords;
$use_keywords = true;
//var_dump($topic_keywords);
}
$BR = PHP_EOL;
if ($options['review_mode_omit_notices'] == '0') {
$output = $default_text . $BR . $BR;
//$output .= $BR . '<span class="">Text analysis</span>' . $BR;
} else {
$output = '';
}
if ($options['review_mode_omit_notices'] == '0') {
$output .= 'Metadata Overview' . $BR;
$output .= '=================' . $BR;
//$output .= 'This overview has been generated by the Add-Meta-Tags plugin for statistical and' . $BR;
//$output .= 'informational purposes only. Please do not modify or base your work upon this report.' . $BR . $BR;
$output .= 'NOTICE: Add-Meta-Tags does not provide SEO advice and does not rate your content.' . $BR;
$output .= 'This <a target="_blank" href="http://www.codetrax.org/projects/wp-add-meta-tags/wiki/Metadata_Overview">overview</a> has been generated for statistical and informational purposes only.' . $BR . $BR;
//$output .= '<a target="_blank" href="http://www.codetrax.org/projects/wp-add-meta-tags/wiki/FAQ#Is-Add-Meta-Tags-an-SEO-plugin">Read more</a> about the mentality upon which the development of this plugin has been based.' . $BR;
//$output .= 'Please use this statistical information to identify keyword overstuffing' . $BR;
//$output .= 'and stay away from following any patterns or being bound by the numbers.' . $BR . $BR;
}
if ($use_keywords) {
$output .= sprintf('This overview has been based on post keywords, because the Custom Field \'<em>%s</em>\' could not be found.', $topic_keywords_field_name) . $BR;
} else {
$output .= sprintf('This overview has been based on <em>topic keywords</em> retrieved from the Custom Field \'<em>%s</em>\'.', $topic_keywords_field_name) . $BR;
}
if ($options['review_mode_omit_notices'] == '0') {
$output .= 'Keyword Analysis' . $BR;
$output .= '----------------' . $BR;
} else {
$output .= $BR;
}
$output .= '<table class="amt-ht-table">';
$output .= '<tr> <th>Topic Keyword</th> <th>Content</th> <th>Description</th> <th>Keywords</th> <th>Post Title</th> <th>HTML title</th> <th>Metadata titles</th> <th>Post URL</th> </tr>';
foreach ($topic_keywords as $topic_keyword) {
$output .= sprintf('<tr> <td>%s</td>', $topic_keyword);
$is_into = array();
// Check content
$is_into['content'] = '';
$occurrences = preg_match_all(sprintf($keyword_matching_pattern, $topic_keyword), $post_content, $matches);
if ($occurrences) {
// Only for content
$topic_keyword_desnity = round($occurrences / $post_word_count * 100, 2);
$output .= sprintf(' <td>%d (%.2f%%)</td>', $occurrences, $topic_keyword_desnity);
} else {
$output .= '<td> </td>';
}
// Check description
$occurrences = preg_match_all(sprintf($keyword_matching_pattern, $topic_keyword), $description, $matches);
if ($occurrences) {
$output .= sprintf(' <td>%d</td>', $occurrences);
} else {
$output .= '<td> </td>';
}
// Check keywords
if ($use_keywords) {
$output .= '<td>N/A</td>';
$is_into['keywords'] = 'N/A';
} elseif (in_array($topic_keyword, $keywords)) {
// Always 1
$output .= '<td>1</td>';
} else {
$output .= '<td> </td>';
}
// Check original title
$occurrences = preg_match_all(sprintf($keyword_matching_pattern, $topic_keyword), $post_title, $matches);
if ($occurrences) {
$output .= sprintf(' <td>%d</td>', $occurrences);
} else {
$output .= '<td> </td>';
}
// Check title element
$occurrences = preg_match_all(sprintf($keyword_matching_pattern, $topic_keyword), $post_title_html_element, $matches);
if ($occurrences) {
$output .= sprintf(' <td>%d</td>', $occurrences);
} else {
$output .= '<td> </td>';
}
// Check metadata titles
$occurrences = preg_match_all(sprintf($keyword_matching_pattern, $topic_keyword), $post_title_metadata, $matches);
if ($occurrences) {
$output .= sprintf(' <td>%d</td>', $occurrences);
} else {
$output .= '<td> </td>';
}
// Check post URL
$occurrences = preg_match_all(sprintf($keyword_matching_pattern, $topic_keyword), $post_url, $matches);
if ($occurrences) {
$output .= sprintf(' <td>%d</td>', $occurrences);
} else {
$output .= '<td> </td>';
}
// Close row
$output .= ' </tr>' . $BR;
}
$output .= '</table>' . $BR;
// Topic Keywords Distribution Graph
if ($options['review_mode_omit_notices'] == '0') {
$output .= 'Topic Keywords Distribution Graph' . $BR;
$output .= '---------------------------------' . $BR;
$output .= 'The following text based graph shows how the <em>topic keywords</em> are distributed within your content.' . $BR;
$output .= 'You can use it to identify incidents of keyword overstuffing.' . $BR . $BR;
}
//$output .= $BR . $BR;
$total_bars = 39;
// zero based
$step = $post_content_length / $total_bars;
// Debug
//$output .= $BR . $post_content_length . ' ' . $step . $BR;
$max_weight = null;
$weights = array();
// Reset weights
for ($x = 0; $x <= $total_bars; $x++) {
$weights[$x] = 1;
}
foreach ($topic_keywords as $topic_keyword) {
// Use preg_match_all with PREG_OFFSET_CAPTURE -- http://php.net/manual/en/function.preg-match-all.php
$topic_keyword_occurrences = preg_match_all(sprintf($keyword_matching_pattern, $topic_keyword), $post_content, $matches, PREG_OFFSET_CAPTURE);
//var_dump($matches);
if (!empty($topic_keyword_occurrences)) {
foreach ($matches[0] as $match) {
$pos = $match[1];
$step_index = absint($pos / $step);
$weights[$step_index] = $weights[$step_index] + 1;
if ($weights[$step_index] > $max_weight) {
$max_weight = $weights[$step_index];
}
// Debug
//$output .= sprintf('kw: %s, pos: %s, step index: %s, step weight: %s', $topic_keyword, $pos, $step_index, $weights[$step_index]) . $BR;
}
}
}
//var_dump($weights);
for ($x = $max_weight - 1; $x >= 1; $x--) {
$line = '';
for ($y = 0; $y <= $total_bars; $y++) {
if ($weights[$y] > $x) {
$line .= '#';
} else {
$line .= ' ';
}
}
$output .= $line . $BR;
}
// Currently this text based ruler is used as base line.
$output .= str_repeat('---------+', ($total_bars + 1) / 10) . $BR;
if ($options['review_mode_omit_notices'] == '0') {
$output .= $BR . '<code>#</code>: indicates a single occurrence of a <em>topic keyword</em>.' . $BR;
} else {
$output .= $BR;
}
// Stats and scores by algos provided by the word-statistics-plugin by FD
if (function_exists('wordstats_words')) {
// Readability Tests
if ($options['review_mode_omit_notices'] == '0') {
$output .= $BR . 'Readability Scores and Text Statistics' . $BR;
$output .= '--------------------------------------' . $BR;
$output .= 'These readability scores and text statistics are based on algorithms provided by the <em>FD Word Statistics Plugin</em>.' . $BR . $BR;
}
if (function_exists('wordstats_words')) {
$output .= sprintf(' ● Total words: <strong>%d</strong>', wordstats_words($post_content)) . $BR;
}
if (function_exists('wordstats_sentences')) {
$output .= sprintf(' ● Total sentences: <strong>%d</strong>', wordstats_sentences($post_content)) . $BR;
}
if (function_exists('wordstats_flesch_kincaid')) {
$output .= sprintf(' ● Flesch-Kincaid US grade level: <strong>%.1f</strong> <em>(For instance, a score of 9.3 means suitable for a 9th grade student in the US, <a target="_blank" href="%s">read more</a>.)</em>', wordstats_flesch_kincaid($post_content), 'https://en.wikipedia.org/wiki/Flesch%E2%80%93Kincaid_readability_tests#Flesch.E2.80.93Kincaid_grade_level') . $BR;
}
if (function_exists('wordstats_flesch')) {
$output .= sprintf(' ● Flesch reading ease: <strong>%.1f%%</strong> <em>(avg 11 y.o. student: 90-100%%, 13-15 y.o. students: 60-70%%, university graduates: 0-30%%, <a target="_blank" href="%s">read more</a>.)</em>', wordstats_flesch($post_content), 'https://en.wikipedia.org/wiki/Flesch%E2%80%93Kincaid_readability_tests#Flesch_reading_ease') . $BR;
}
if (function_exists('wordstats_fog')) {
$output .= sprintf(' ● Gunning fog index: <strong>%.1f</strong> <em>(wide audience: < 12, near universal understanding: < 8, <a target="_blank" href="%s">read more</a>.)</em>', wordstats_fog($post_content), 'https://en.wikipedia.org/wiki/Gunning_fog_index') . $BR;
}
$output .= $BR;
} else {
if ($options['review_mode_omit_notices'] == '0') {
$output .= $BR . $BR . 'Note: There is experimental support for <em>FD Word Statistics Plugin</em>.';
$output .= $BR . 'If installed, you can get some readability scores and text statistics here.' . $BR . $BR;
}
}
return $output;
}
function amt_add_dublin_core_metadata_head($post, $attachments, $embedded_media, $options)
{
if (apply_filters('amt_exclude_dublin_core_metadata', false)) {
return array();
}
$metadata_arr = array();
$do_auto_dublincore = $options["auto_dublincore"] == "1" ? true : false;
if (!$do_auto_dublincore) {
return $metadata_arr;
}
// Custom content override
if (amt_is_custom($post, $options)) {
// Return metadata with:
// add_filter( 'amt_custom_metadata_dublin_core', 'my_function', 10, 5 );
// Return an array of meta tags. Array item format: ['key_can_be_whatever'] = '<meta name="foo" content="bar" />'
$metadata_arr = apply_filters('amt_custom_metadata_dublin_core', $metadata_arr, $post, $options, $attachments, $embedded_media);
return $metadata_arr;
}
if (!is_singular() || is_front_page()) {
// is_front_page() is used for the case in which a static page is used as the front page.
// Dublin Core metadata has a meaning for content only.
return array();
}
// The Dublin Core metadata generator does not support products or product groups.
if (amt_is_product() || amt_is_product_group()) {
return array();
}
// Title
// Note: Contains multipage information through amt_process_paged()
$metadata_arr['dcterms.title'] = '<meta name="dcterms.title" content="' . esc_attr(amt_get_title_for_metadata($options, $post)) . '" />';
// Resource identifier - Uses amt_get_permalink_for_multipage()
$metadata_arr[] = '<meta name="dcterms.identifier" content="' . esc_url_raw(amt_get_permalink_for_multipage($post)) . '" />';
$metadata_arr[] = '<meta name="dcterms.creator" content="' . esc_attr(amt_get_dublin_core_author_notation($post)) . '" />';
//$metadata_arr[] = '<meta name="dcterms.date" content="' . esc_attr( amt_iso8601_date($post->post_date) ) . '" />';
$metadata_arr[] = '<meta name="dcterms.created" content="' . esc_attr(amt_iso8601_date($post->post_date)) . '" />';
$metadata_arr[] = '<meta name="dcterms.available" content="' . esc_attr(amt_iso8601_date($post->post_date)) . '" />';
//$metadata_arr[] = '<meta name="dcterms.issued" content="' . esc_attr( amt_iso8601_date($post->post_date) ) . '" />';
$metadata_arr[] = '<meta name="dcterms.modified" content="' . esc_attr(amt_iso8601_date($post->post_modified)) . '" />';
// Description
// We use the same description as the ``description`` meta tag.
// Note: Contains multipage information through amt_process_paged()
$content_desc = amt_get_content_description($post);
if (!empty($content_desc)) {
$metadata_arr[] = '<meta name="dcterms.description" content="' . esc_attr(amt_process_paged($content_desc)) . '" />';
}
// Keywords
if (!is_attachment()) {
// Attachments do not support keywords
// dcterms.subject - one for each keyword.
$keywords = explode(',', amt_get_content_keywords($post));
foreach ($keywords as $subject) {
$subject = trim($subject);
if (!empty($subject)) {
$metadata_arr[] = '<meta name="dcterms.subject" content="' . esc_attr($subject) . '" />';
}
}
}
$metadata_arr[] = '<meta name="dcterms.language" content="' . esc_attr(amt_get_language_content($options, $post)) . '" />';
$metadata_arr[] = '<meta name="dcterms.publisher" content="' . esc_url_raw(trailingslashit(get_bloginfo('url'))) . '" />';
// Copyright page
$copyright_url = amt_get_site_copyright_url($options);
if (empty($copyright_url)) {
$copyright_url = trailingslashit(get_bloginfo('url'));
}
if (!empty($copyright_url)) {
$metadata_arr[] = '<meta name="dcterms.rights" content="' . esc_url_raw($copyright_url) . '" />';
}
// License
$license_url = '';
// The following requires creative commons configurator
if (function_exists('bccl_get_license_url')) {
$license_url = bccl_get_license_url();
}
// Allow filtering of the license URL
$license_url = apply_filters('amt_dublin_core_license', $license_url, $post->ID);
// Add metatag if $license_url is not empty.
if (!empty($license_url)) {
$metadata_arr[] = '<meta name="dcterms.license" content="' . esc_url_raw($license_url) . '" />';
}
// Coverage
$metadata_arr[] = '<meta name="dcterms.coverage" content="World" />';
if (is_attachment()) {
$mime_type = get_post_mime_type($post->ID);
//$attachment_type = strstr( $mime_type, '/', true );
// See why we do not use strstr(): http://www.codetrax.org/issues/1091
$attachment_type = preg_replace('#\\/[^\\/]*$#', '', $mime_type);
$metadata_arr[] = '<meta name="dcterms.isPartOf" content="' . esc_url_raw(get_permalink($post->post_parent)) . '" />';
if ('image' == $attachment_type) {
$metadata_arr[] = '<meta name="dcterms.type" content="Image" />';
$metadata_arr[] = '<meta name="dcterms.format" content="' . $mime_type . '" />';
} elseif ('video' == $attachment_type) {
$metadata_arr[] = '<meta name="dcterms.type" content="MovingImage" />';
$metadata_arr[] = '<meta name="dcterms.format" content="' . $mime_type . '" />';
} elseif ('audio' == $attachment_type) {
$metadata_arr[] = '<meta name="dcterms.type" content="Sound" />';
$metadata_arr[] = '<meta name="dcterms.format" content="' . $mime_type . '" />';
}
// Finally add the hasFormat
$metadata_arr[] = '<meta name="dcterms.hasFormat" content="' . esc_url_raw(wp_get_attachment_url($post->ID)) . '" />';
} else {
// Default: Text
$metadata_arr[] = '<meta name="dcterms.type" content="Text" />';
$metadata_arr[] = '<meta name="dcterms.format" content="text/html" />';
// Add media files
// Media Limits
$image_limit = amt_metadata_get_image_limit($options);
$video_limit = amt_metadata_get_video_limit($options);
$audio_limit = amt_metadata_get_audio_limit($options);
// Counters
$ic = 0;
// image counter
$vc = 0;
// video counter
$ac = 0;
// audio counter
// List attachments
foreach ($attachments as $attachment) {
$mime_type = get_post_mime_type($attachment->ID);
//$attachment_type = strstr( $mime_type, '/', true );
// See why we do not use strstr(): http://www.codetrax.org/issues/1091
$attachment_type = preg_replace('#\\/[^\\/]*$#', '', $mime_type);
if ('image' == $attachment_type && $ic < $image_limit) {
$metadata_arr[] = '<meta name="dcterms.hasPart" content="' . esc_url_raw(get_permalink($attachment->ID)) . '" />';
// Increase image counter
$ic++;
} elseif ('video' == $attachment_type && $vc < $video_limit) {
$metadata_arr[] = '<meta name="dcterms.hasPart" content="' . esc_url_raw(get_permalink($attachment->ID)) . '" />';
// Increase video counter
$vc++;
} elseif ('audio' == $attachment_type && $ac < $audio_limit) {
$metadata_arr[] = '<meta name="dcterms.hasPart" content="' . esc_url_raw(get_permalink($attachment->ID)) . '" />';
// Increase audio counter
$ac++;
}
}
// Embedded Media
foreach ($embedded_media['images'] as $embedded_item) {
if ($ic == $image_limit) {
break;
}
$metadata_arr[] = '<meta name="dcterms.hasPart" content="' . esc_url_raw($embedded_item['page']) . '" />';
// Increase image counter
$ic++;
}
foreach ($embedded_media['videos'] as $embedded_item) {
if ($vc == $video_limit) {
break;
}
$metadata_arr[] = '<meta name="dcterms.hasPart" content="' . esc_url_raw($embedded_item['page']) . '" />';
// Increase video counter
$vc++;
}
foreach ($embedded_media['sounds'] as $embedded_item) {
if ($ac == $audio_limit) {
break;
}
$metadata_arr[] = '<meta name="dcterms.hasPart" content="' . esc_url_raw($embedded_item['page']) . '" />';
// Increase audio counter
$ac++;
}
}
/**
* WordPress Post Formats: http://codex.wordpress.org/Post_Formats
* Dublin Core Format: http://dublincore.org/documents/dcmi-terms/#terms-format
* Dublin Core DCMIType: http://dublincore.org/documents/dcmi-type-vocabulary/
*/
/**
* TREAT ALL POST FORMATS AS TEXT (for now)
*/
/**
$format = get_post_format( $post->id );
if ( empty($format) || $format=="aside" || $format=="link" || $format=="quote" || $format=="status" || $format=="chat") {
// Default format
$metadata_arr[] = '<meta name="dcterms.type" content="Text" />';
$metadata_arr[] = '<meta name="dcterms.format" content="text/html" />';
} elseif ($format=="gallery") {
$metadata_arr[] = '<meta name="dcterms.type" content="Collection" />';
// $metadata_arr[] = '<meta name="dcterms.format" content="image" />';
} elseif ($format=="image") {
$metadata_arr[] = '<meta name="dcterms.type" content="Image" />';
// $metadata_arr[] = '<meta name="dcterms.format" content="image/png" />';
} elseif ($format=="video") {
$metadata_arr[] = '<meta name="dcterms.type" content="Moving Image" />';
$metadata_arr[] = '<meta name="dcterms.format" content="application/x-shockwave-flash" />';
} elseif ($format=="audio") {
$metadata_arr[] = '<meta name="dcterms.type" content="Sound" />';
$metadata_arr[] = '<meta name="dcterms.format" content="audio/mpeg" />';
}
*/
// Filtering of the generated Dublin Core metadata
$metadata_arr = apply_filters('amt_dublin_core_metadata_head', $metadata_arr);
return $metadata_arr;
}
/**
* Filter function that generates and embeds Schema.org metadata in the content.
*/
function amt_add_schemaorg_metadata_content_filter($post_body)
{
if (is_feed()) {
return $post_body;
}
if (!is_singular() || is_front_page()) {
// is_front_page() is used for the case in which a static page is used as the front page.
// In this filter function we only deal with content and attachments.
return $post_body;
}
// Get the options the DB
$options = get_option("add_meta_tags_opts");
$do_auto_schemaorg = $options["auto_schemaorg"] == "1" ? true : false;
if (!$do_auto_schemaorg) {
return $post_body;
}
// Get current post object
$post = get_queried_object();
$metadata_arr = array();
// Since this is a function that is hooked to the 'the_content' filter
// of WordPress, the post type check has not run, so this happens here.
// Check if metadata is supported on this content type.
$post_type = get_post_type($post);
if (!in_array($post_type, amt_get_supported_post_types())) {
return $post_body;
}
// Get an array containing the attachments
$attachments = amt_get_ordered_attachments($post);
//var_dump($attachments);
// Get an array containing the URLs of the embedded media
$embedded_media = amt_get_embedded_media($post);
//var_dump($embedded_media);
// Products
if (amt_is_product()) {
// Scope BEGIN: Product: http://schema.org/Product
$metadata_arr[] = '<!-- Scope BEGIN: Product -->';
// Construct itemref attribute. Should contain a comma delimited list of IDs.
$itemref = apply_filters('amt_schemaorg_itemref_product', '');
if (!empty($itemref)) {
$itemref_attrib = ' itemref="' . $itemref . '"';
} else {
$itemref_attrib = '';
}
$metadata_arr[] = '<div itemscope itemtype="http://schema.org/Product"' . $itemref_attrib . '>';
// URL - Uses amt_get_permalink_for_multipage()
$metadata_arr[] = '<meta itemprop="url" content="' . esc_url_raw(amt_get_permalink_for_multipage($post)) . '" />';
// name
// Note: Contains multipage information through amt_process_paged()
$metadata_arr[] = '<meta itemprop="name" content="' . esc_attr(amt_process_paged(get_the_title($post->ID))) . '" />';
// Description - We use the description defined by Add-Meta-Tags
// Note: Contains multipage information through amt_process_paged()
$content_desc = amt_get_content_description($post);
if (empty($content_desc)) {
// Use the post body as the description. Product objects do not support body text.
$content_desc = sanitize_text_field(amt_sanitize_description($post_body));
}
if (!empty($content_desc)) {
$metadata_arr[] = '<meta itemprop="description" content="' . esc_attr(amt_process_paged($content_desc)) . '" />';
}
// Dates
$metadata_arr[] = '<meta itemprop="releaseDate" content="' . esc_attr(amt_iso8601_date($post->post_date)) . '" />';
// Images
// First check if a global image override URL has been entered.
// If yes, use this image URL and override all other images.
$global_image_override_url = amt_get_post_meta_image_url($post->ID);
if (!empty($global_image_override_url)) {
$metadata_arr[] = '<!-- Scope BEGIN: ImageObject -->';
$metadata_arr[] = '<span itemprop="image" itemscope itemtype="http://schema.org/ImageObject">';
$metadata_arr[] = '<meta itemprop="contentUrl" content="' . esc_url_raw($global_image_override_url) . '" />';
$metadata_arr[] = '</span> <!-- Scope END: ImageObject -->';
// Further image processing
} else {
// Set to true if any image attachments are found. Use to finally add the default image
// if no image attachments have been found.
$has_images = false;
// Scope BEGIN: ImageObject: http://schema.org/ImageObject
// Image - Featured image is checked first, so that it can be the first associated image.
if (function_exists('has_post_thumbnail') && has_post_thumbnail($post->ID)) {
// Get the image attachment object
$image = get_post(get_post_thumbnail_id($post->ID));
// metadata BEGIN
$metadata_arr[] = '<!-- Scope BEGIN: ImageObject -->';
$metadata_arr[] = '<span itemprop="image" itemscope itemtype="http://schema.org/ImageObject">';
// Allow filtering of the image size.
$image_size = apply_filters('amt_image_size_product', 'full');
// Get image metatags.
$metadata_arr = array_merge($metadata_arr, amt_get_schemaorg_image_metatags($image, $size = $image_size));
// metadata END
$metadata_arr[] = '</span> <!-- Scope END: ImageObject -->';
// Images have been found.
$has_images = true;
}
// Scope END: ImageObject
// If no images have been found so far use the default image, if set.
// Scope BEGIN: ImageObject: http://schema.org/ImageObject
if ($has_images === false && !empty($options["default_image_url"])) {
$metadata_arr[] = '<!-- Scope BEGIN: ImageObject -->';
$metadata_arr[] = '<span itemprop="image" itemscope itemtype="http://schema.org/ImageObject">';
$metadata_arr[] = '<meta itemprop="contentUrl" content="' . esc_url_raw($options["default_image_url"]) . '" />';
$metadata_arr[] = '</span> <!-- Scope END: ImageObject -->';
}
// Scope END: ImageObject
}
// Extend the current metadata with properties of the Product object.
// See: http://schema.org/Product
$metadata_arr = apply_filters('amt_product_data_schemaorg', $metadata_arr, $post);
// Scope END: Product
$metadata_arr[] = '</div> <!-- Scope END: Product -->';
// Filtering of the generated Schema.org metadata
$metadata_arr = apply_filters('amt_schemaorg_metadata_product', $metadata_arr);
// Add post body
// Remove last closing '</div>' tag, add post body and re-add the closing div afterwards.
$closing_product_tag = array_pop($metadata_arr);
// Product objects do not support a 'text' itemprop. We just add a div for now
// for consistency with Article objects.
// TODO: it should allow filtering '<div>'
$metadata_arr[] = '<div> <!-- Product text body: BEGIN -->';
$metadata_arr[] = $post_body;
$metadata_arr[] = '</div> <!-- Product text body: END -->';
// Now add closing tag for Article
$metadata_arr[] = $closing_product_tag;
// Attachemnts
} elseif (is_attachment()) {
$mime_type = get_post_mime_type($post->ID);
//$attachment_type = strstr( $mime_type, '/', true );
// See why we do not use strstr(): http://www.codetrax.org/issues/1091
$attachment_type = preg_replace('#\\/[^\\/]*$#', '', $mime_type);
// Early metatags - Scope starts
if ('image' == $attachment_type) {
// Scope BEGIN: ImageObject: http://schema.org/ImageObject
$metadata_arr[] = '<!-- Scope BEGIN: ImageObject -->';
// Construct itemref attribute. Should contain a comma delimited list of IDs.
$itemref = apply_filters('amt_schemaorg_itemref_attachment_image', '');
if (!empty($itemref)) {
$itemref_attrib = ' itemref="' . $itemref . '"';
} else {
$itemref_attrib = '';
}
$metadata_arr[] = '<div itemscope itemtype="http://schema.org/ImageObject"' . $itemref_attrib . '>';
} elseif ('video' == $attachment_type) {
// Scope BEGIN: VideoObject: http://schema.org/VideoObject
$metadata_arr[] = '<!-- Scope BEGIN: VideoObject -->';
// Construct itemref attribute. Should contain a comma delimited list of IDs.
$itemref = apply_filters('amt_schemaorg_itemref_attachment_video', '');
if (!empty($itemref)) {
$itemref_attrib = ' itemref="' . $itemref . '"';
} else {
$itemref_attrib = '';
}
$metadata_arr[] = '<div itemscope itemtype="http://schema.org/VideoObject"' . $itemref_attrib . '>';
} elseif ('audio' == $attachment_type) {
// Scope BEGIN: AudioObject: http://schema.org/AudioObject
$metadata_arr[] = '<!-- Scope BEGIN: AudioObject -->';
// Construct itemref attribute. Should contain a comma delimited list of IDs.
$itemref = apply_filters('amt_schemaorg_itemref_attachment_audio', '');
if (!empty($itemref)) {
$itemref_attrib = ' itemref="' . $itemref . '"';
} else {
$itemref_attrib = '';
}
$metadata_arr[] = '<div itemscope itemtype="http://schema.org/AudioObject"' . $itemref_attrib . '>';
} else {
// we do not currently support other attachment types, so we stop processing here
return $post_body;
}
// Metadata commong to all attachments
// Publisher
// Scope BEGIN: Organization: http://schema.org/Organization
$metadata_arr[] = '<!-- Scope BEGIN: Organization -->';
$metadata_arr[] = '<span itemprop="publisher" itemscope itemtype="http://schema.org/Organization">';
// Get publisher metatags
$metadata_arr = array_merge($metadata_arr, amt_get_schemaorg_publisher_metatags($options, $post->post_author));
// Scope END: Organization
$metadata_arr[] = '</span> <!-- Scope END: Organization -->';
// Author
// Scope BEGIN: Person: http://schema.org/Person
$metadata_arr[] = '<!-- Scope BEGIN: Person -->';
$metadata_arr[] = '<span itemprop="author" itemscope itemtype="http://schema.org/Person">';
// Get author metatags
$metadata_arr = array_merge($metadata_arr, amt_get_schemaorg_author_metatags($post->post_author));
// Scope END: Person
$metadata_arr[] = '</span> <!-- Scope END: Person -->';
// Dates
$metadata_arr[] = '<meta itemprop="datePublished" content="' . esc_attr(amt_iso8601_date($post->post_date)) . '" />';
$metadata_arr[] = '<meta itemprop="dateModified" content="' . esc_attr(amt_iso8601_date($post->post_modified)) . '" />';
$metadata_arr[] = '<meta itemprop="copyrightYear" content="' . esc_attr(mysql2date('Y', $post->post_date)) . '" />';
// Language
$metadata_arr[] = '<meta itemprop="inLanguage" content="' . esc_attr(str_replace('-', '_', amt_get_language_content($options))) . '" />';
// Metadata specific to each attachment type
if ('image' == $attachment_type) {
// Allow filtering of the image size.
$image_size = apply_filters('amt_image_size_attachment', 'full');
// Get image metatags. $post is an image object.
$metadata_arr = array_merge($metadata_arr, amt_get_schemaorg_image_metatags($post, $size = $image_size, $is_representative = true));
// Add the post body here
$metadata_arr[] = $post_body;
// Scope END: ImageObject
$metadata_arr[] = '</div> <!-- Scope END: ImageObject -->';
} elseif ('video' == $attachment_type) {
// Video specific metatags
// URL (for attachments: links to attachment page)
$metadata_arr[] = '<meta itemprop="url" content="' . esc_url_raw(get_permalink($post->ID)) . '" />';
$metadata_arr[] = '<meta itemprop="contentUrl" content="' . esc_url_raw(wp_get_attachment_url($post->ID)) . '" />';
$metadata_arr[] = '<meta itemprop="encodingFormat" content="' . esc_attr($mime_type) . '" />';
// Add the post body here
$metadata_arr[] = $post_body;
// Scope END: VideoObject
$metadata_arr[] = '</div> <!-- Scope END: VideoObject -->';
} elseif ('audio' == $attachment_type) {
// Audio specific metatags
// URL (for attachments: links to attachment page)
$metadata_arr[] = '<meta itemprop="url" content="' . esc_url_raw(get_permalink($post->ID)) . '" />';
$metadata_arr[] = '<meta itemprop="contentUrl" content="' . esc_url_raw(wp_get_attachment_url($post->ID)) . '" />';
$metadata_arr[] = '<meta itemprop="encodingFormat" content="' . esc_attr($mime_type) . '" />';
// Add the post body here
$metadata_arr[] = $post_body;
// Scope END: AudioObject
$metadata_arr[] = '</div> <!-- Scope END: AudioObject -->';
}
// Content
} else {
// Set main metadata entity. By default this set to Article.
$main_content_object = 'Article';
// Check for Page
// Main entity is set to WebPage on pages
// DEV NOTE: Since many themes already set the WebPage itemscope on the
// body element of the web page, set it to WebPage automatically would
// result in duplicate entities. So this has to be done manually via
// a filtering function.
// if ( is_page() ) {
// $main_content_object = 'WebPage';
// }
// Check for Review
$express_review_field_data = amt_get_post_meta_express_review($post->ID);
$review_data = array();
if (!empty($express_review_field_data)) {
$review_data = amt_get_review_data($express_review_field_data);
if (!empty($review_data)) {
$main_content_object = 'Review';
}
}
// Allow filtering the main metadata object for content.
$main_content_object = apply_filters('amt_schemaorg_object_main', $main_content_object);
// Scope BEGIN: Article: http://schema.org/Article
$metadata_arr[] = '<!-- Scope BEGIN: ' . esc_attr($main_content_object) . ' -->';
// Construct itemref attribute. Should contain a comma delimited list of IDs.
$itemref = apply_filters('amt_schemaorg_itemref_content', '');
if (!empty($itemref)) {
$itemref_attrib = ' itemref="' . $itemref . '"';
} else {
$itemref_attrib = '';
}
$metadata_arr[] = '<div itemscope itemtype="http://schema.org/' . esc_attr($main_content_object) . '"' . $itemref_attrib . '>';
// Publisher
// Scope BEGIN: Organization: http://schema.org/Organization
$metadata_arr[] = '<!-- Scope BEGIN: Organization -->';
$metadata_arr[] = '<span itemprop="publisher" itemscope itemtype="http://schema.org/Organization">';
// Get publisher metatags
$metadata_arr = array_merge($metadata_arr, amt_get_schemaorg_publisher_metatags($options, $post->post_author));
// Scope END: Organization
$metadata_arr[] = '</span> <!-- Scope END: Organization -->';
// Author
// Scope BEGIN: Person: http://schema.org/Person
$metadata_arr[] = '<!-- Scope BEGIN: Person -->';
$metadata_arr[] = '<span itemprop="author" itemscope itemtype="http://schema.org/Person">';
// Get publisher metatags
$metadata_arr = array_merge($metadata_arr, amt_get_schemaorg_author_metatags($post->post_author));
// Scope END: Person
$metadata_arr[] = '</span> <!-- Scope END: Person -->';
// URL - Uses amt_get_permalink_for_multipage()
$metadata_arr[] = '<meta itemprop="url" content="' . esc_url_raw(amt_get_permalink_for_multipage($post)) . '" />';
// Dates
$metadata_arr[] = '<meta itemprop="datePublished" content="' . esc_attr(amt_iso8601_date($post->post_date)) . '" />';
$metadata_arr[] = '<meta itemprop="dateModified" content="' . esc_attr(amt_iso8601_date($post->post_modified)) . '" />';
$metadata_arr[] = '<meta itemprop="copyrightYear" content="' . esc_attr(mysql2date('Y', $post->post_date)) . '" />';
// Language
$metadata_arr[] = '<meta itemprop="inLanguage" content="' . esc_attr(str_replace('-', '_', amt_get_language_content($options))) . '" />';
// name
// Note: Contains multipage information through amt_process_paged()
$metadata_arr[] = '<meta itemprop="name" content="' . esc_attr(amt_process_paged(get_the_title($post->ID))) . '" />';
// headline
$metadata_arr[] = '<meta itemprop="headline" content="' . esc_attr(get_the_title($post->ID)) . '" />';
// Description - We use the description defined by Add-Meta-Tags
// Note: Contains multipage information through amt_process_paged()
$content_desc = amt_get_content_description($post);
if (!empty($content_desc)) {
$metadata_arr[] = '<meta itemprop="description" content="' . esc_attr(amt_process_paged($content_desc)) . '" />';
}
/*
// Section: We use the first category as the section
$first_cat = sanitize_text_field( amt_sanitize_keywords( amt_get_first_category($post) ) );
if (!empty($first_cat)) {
$metadata_arr[] = '<meta itemprop="articleSection" content="' . esc_attr( $first_cat ) . '" />';
}
*/
// Add articleSection in Article object only.
if ($main_content_object == 'Article') {
$categories = get_the_category($post->ID);
$categories = apply_filters('amt_post_categories_for_schemaorg', $categories);
foreach ($categories as $cat) {
$section = trim($cat->cat_name);
if (!empty($section) && $cat->slug != 'uncategorized') {
$metadata_arr[] = '<meta itemprop="articleSection" content="' . esc_attr($section) . '" />';
}
}
}
// Add review properties if Review
if ($main_content_object == 'Review') {
$metadata_arr[] = '<!-- Review Information BEGIN -->';
$metadata_arr[] = amt_get_review_info_box($review_data);
$metadata_arr[] = '<!-- Review Information END -->';
}
// Keywords - We use the keywords defined by Add-Meta-Tags
$keywords = amt_get_content_keywords($post);
if (!empty($keywords)) {
$metadata_arr[] = '<meta itemprop="keywords" content="' . esc_attr($keywords) . '" />';
}
// Referenced Items
$referenced_url_list = amt_get_referenced_items($post);
foreach ($referenced_url_list as $referenced_url) {
$referenced_url = trim($referenced_url);
if (!empty($referenced_url)) {
$metadata_arr[] = '<meta itemprop="referencedItem" content="' . esc_url_raw($referenced_url) . '" />';
}
}
// Images
// First check if a global image override URL has been entered.
// If yes, use this image URL and override all other images.
$global_image_override_url = amt_get_post_meta_image_url($post->ID);
if (!empty($global_image_override_url)) {
$metadata_arr[] = '<!-- Scope BEGIN: ImageObject -->';
$metadata_arr[] = '<span itemprop="image" itemscope itemtype="http://schema.org/ImageObject">';
$metadata_arr[] = '<meta itemprop="contentUrl" content="' . esc_url_raw($global_image_override_url) . '" />';
$metadata_arr[] = '</span> <!-- Scope END: ImageObject -->';
// Further image processing
} else {
// We store the featured image ID in this variable so that it can easily be excluded
// when all images are parsed from the $attachments array.
$featured_image_id = 0;
// Set to true if any image attachments are found. Use to finally add the default image
// if no image attachments have been found.
$has_images = false;
// Scope BEGIN: ImageObject: http://schema.org/ImageObject
// Image - Featured image is checked first, so that it can be the first associated image.
if (function_exists('has_post_thumbnail') && has_post_thumbnail($post->ID)) {
// Thumbnail URL
// First add the thumbnail URL of the featured image
$thumbnail_info = wp_get_attachment_image_src(get_post_thumbnail_id($post->ID), 'thumbnail');
$metadata_arr[] = '<meta itemprop="thumbnailUrl" content="' . esc_url_raw($thumbnail_info[0]) . '" />';
// Add full image object for featured image.
// Get the image attachment object
$image = get_post(get_post_thumbnail_id($post->ID));
// metadata BEGIN
$metadata_arr[] = '<!-- Scope BEGIN: ImageObject -->';
$metadata_arr[] = '<span itemprop="associatedMedia" itemscope itemtype="http://schema.org/ImageObject">';
// Allow filtering of the image size.
$image_size = apply_filters('amt_image_size_content', 'full');
// Get image metatags.
$metadata_arr = array_merge($metadata_arr, amt_get_schemaorg_image_metatags($image, $size = $image_size));
// metadata END
$metadata_arr[] = '</span> <!-- Scope END: ImageObject -->';
// Finally, set the $featured_image_id
$featured_image_id = get_post_thumbnail_id($post->ID);
// Images have been found.
$has_images = true;
}
// Scope END: ImageObject
// Process all attachments and add metatags (featured image will be excluded)
foreach ($attachments as $attachment) {
// Excluded the featured image since
if ($attachment->ID != $featured_image_id) {
$mime_type = get_post_mime_type($attachment->ID);
//$attachment_type = strstr( $mime_type, '/', true );
// See why we do not use strstr(): http://www.codetrax.org/issues/1091
$attachment_type = preg_replace('#\\/[^\\/]*$#', '', $mime_type);
if ('image' == $attachment_type) {
// metadata BEGIN
$metadata_arr[] = '<!-- Scope BEGIN: ImageObject -->';
$metadata_arr[] = '<span itemprop="associatedMedia" itemscope itemtype="http://schema.org/ImageObject">';
// Allow filtering of the image size.
$image_size = apply_filters('amt_image_size_content', 'full');
// Get image metatags.
$metadata_arr = array_merge($metadata_arr, amt_get_schemaorg_image_metatags($attachment, $size = $image_size));
// metadata END
$metadata_arr[] = '</span> <!-- Scope END: ImageObject -->';
// Images have been found.
$has_images = true;
} elseif ('video' == $attachment_type) {
// Scope BEGIN: VideoObject: http://schema.org/VideoObject
$metadata_arr[] = '<!-- Scope BEGIN: VideoObject -->';
$metadata_arr[] = '<span itemprop="associatedMedia" itemscope itemtype="http://schema.org/VideoObject">';
// Video specific metatags
// URL (for attachments: links to attachment page)
$metadata_arr[] = '<meta itemprop="url" content="' . esc_url_raw(get_permalink($attachment->ID)) . '" />';
$metadata_arr[] = '<meta itemprop="contentUrl" content="' . esc_url_raw(wp_get_attachment_url($attachment->ID)) . '" />';
$metadata_arr[] = '<meta itemprop="encodingFormat" content="' . esc_attr($mime_type) . '" />';
// Scope END: VideoObject
$metadata_arr[] = '</span> <!-- Scope END: VideoObject -->';
} elseif ('audio' == $attachment_type) {
// Scope BEGIN: AudioObject: http://schema.org/AudioObject
$metadata_arr[] = '<!-- Scope BEGIN: AudioObject -->';
$metadata_arr[] = '<span itemprop="associatedMedia" itemscope itemtype="http://schema.org/AudioObject">';
// Audio specific metatags
// URL (for attachments: links to attachment page)
$metadata_arr[] = '<meta itemprop="url" content="' . esc_url_raw(get_permalink($attachment->ID)) . '" />';
$metadata_arr[] = '<meta itemprop="contentUrl" content="' . esc_url_raw(wp_get_attachment_url($attachment->ID)) . '" />';
$metadata_arr[] = '<meta itemprop="encodingFormat" content="' . esc_attr($mime_type) . '" />';
// Scope END: AudioObject
$metadata_arr[] = '</span> <!-- Scope END: AudioObject -->';
}
}
}
// Embedded Media
foreach ($embedded_media['images'] as $embedded_item) {
// Scope BEGIN: ImageObject: http://schema.org/ImageObject
$metadata_arr[] = '<!-- Scope BEGIN: ImageObject -->';
$metadata_arr[] = '<span itemprop="associatedMedia" itemscope itemtype="http://schema.org/ImageObject">';
// name (title)
$metadata_arr[] = '<meta itemprop="name" content="' . esc_attr($embedded_item['alt']) . '" />';
// caption
$metadata_arr[] = '<meta itemprop="caption" content="' . esc_attr($embedded_item['alt']) . '" />';
// alt
$metadata_arr[] = '<meta itemprop="text" content="' . esc_attr($embedded_item['alt']) . '" />';
// URL (links to web page containing the image)
$metadata_arr[] = '<meta itemprop="url" content="' . esc_url_raw($embedded_item['page']) . '" />';
// thumbnail url
$metadata_arr[] = '<meta itemprop="thumbnailUrl" content="' . esc_url_raw($embedded_item['thumbnail']) . '" />';
// main image
$metadata_arr[] = '<meta itemprop="contentUrl" content="' . esc_url_raw($embedded_item['image']) . '" />';
if (apply_filters('amt_extended_image_tags', true)) {
$metadata_arr[] = '<meta itemprop="width" content="' . esc_attr($embedded_item['width']) . '" />';
$metadata_arr[] = '<meta itemprop="height" content="' . esc_attr($embedded_item['height']) . '" />';
$metadata_arr[] = '<meta itemprop="encodingFormat" content="image/jpeg" />';
}
// embedURL
$metadata_arr[] = '<meta itemprop="embedURL" content="' . esc_url_raw($embedded_item['player']) . '" />';
// Scope END: ImageObject
$metadata_arr[] = '</span> <!-- Scope END: ImageObject -->';
// Images have been found.
$has_images = true;
}
foreach ($embedded_media['videos'] as $embedded_item) {
// Scope BEGIN: VideoObject: http://schema.org/VideoObject
// See: http://googlewebmastercentral.blogspot.gr/2012/02/using-schemaorg-markup-for-videos.html
// See: https://support.google.com/webmasters/answer/2413309?hl=en
$metadata_arr[] = '<!-- Scope BEGIN: VideoObject -->';
$metadata_arr[] = '<span itemprop="video" itemscope itemtype="http://schema.org/VideoObject">';
// Video Embed URL
$metadata_arr[] = '<meta itemprop="embedURL" content="' . esc_url_raw($embedded_item['player']) . '" />';
// playerType
$metadata_arr[] = '<meta itemprop="playerType" content="application/x-shockwave-flash" />';
// size
$metadata_arr[] = '<meta itemprop="width" content="' . esc_attr($embedded_item['width']) . '" />';
$metadata_arr[] = '<meta itemprop="height" content="' . esc_attr($embedded_item['height']) . '" />';
// Scope END: VideoObject
$metadata_arr[] = '</span> <!-- Scope END: VideoObject -->';
}
foreach ($embedded_media['sounds'] as $embedded_item) {
// Scope BEGIN: AudioObject: http://schema.org/AudioObject
$metadata_arr[] = '<!-- Scope BEGIN: AudioObject -->';
$metadata_arr[] = '<span itemprop="audio" itemscope itemtype="http://schema.org/AudioObject">';
// Audio Embed URL
$metadata_arr[] = '<meta itemprop="embedURL" content="' . esc_url_raw($embedded_item['player']) . '" />';
// playerType
$metadata_arr[] = '<meta itemprop="playerType" content="application/x-shockwave-flash" />';
// Scope END: AudioObject
$metadata_arr[] = '</span> <!-- Scope END: AudioObject -->';
}
// If no images have been found so far use the default image, if set.
// Scope BEGIN: ImageObject: http://schema.org/ImageObject
if ($has_images === false && !empty($options["default_image_url"])) {
$metadata_arr[] = '<!-- Scope BEGIN: ImageObject -->';
$metadata_arr[] = '<span itemprop="associatedMedia" itemscope itemtype="http://schema.org/ImageObject">';
$metadata_arr[] = '<meta itemprop="contentUrl" content="' . esc_url_raw($options["default_image_url"]) . '" />';
$metadata_arr[] = '</span> <!-- Scope END: ImageObject -->';
}
// Scope END: ImageObject
}
// Article Body
// The article body is added after filtering the generated microdata below.
// TODO: also check: comments, contributor, copyrightHolder, , creator, dateCreated, discussionUrl, editor, version (use post revision if possible)
// Scope END: Article
$metadata_arr[] = '</div> <!-- Scope END: ' . esc_attr($main_content_object) . ' -->';
// Filtering of the generated Schema.org metadata
$metadata_arr = apply_filters('amt_schemaorg_metadata_content', $metadata_arr);
// Add articleBody to Artice
// Now add the article. Remove last closing '</span>' tag, add articleBody and re-add the closing span afterwards.
$closing_article_tag = array_pop($metadata_arr);
// Use the 'text' itemprop by default for the main text body of the CreativeWork,
// so it can be used by more subtypes than Article.
// But set it explicitly to 'articleBody if the main entiry is 'Article'
// or 'reviewBody' if the main entity is a 'Review'.
$main_text_property = 'text';
if ($main_content_object == 'Article') {
$main_text_property = 'articleBody';
} elseif ($main_content_object == 'Review') {
$main_text_property = 'reviewBody';
}
// Allow filtering of the main text property.
$main_text_property = apply_filters('amt_schemaorg_property_main_text', $main_text_property);
$metadata_arr[] = '<div itemprop="' . esc_attr($main_text_property) . '">';
$metadata_arr[] = $post_body;
$metadata_arr[] = '</div> <!-- Itemprop END: ' . esc_attr($main_text_property) . ' -->';
// Now add closing tag for Article
$metadata_arr[] = $closing_article_tag;
}
// Add our comment
if (count($metadata_arr) > 0) {
array_unshift($metadata_arr, "<!-- BEGIN Schema.org microdata added by Add-Meta-Tags WordPress plugin -->");
array_unshift($metadata_arr, "");
// Intentionaly left empty
array_push($metadata_arr, "<!-- END Schema.org microdata added by Add-Meta-Tags WordPress plugin -->");
array_push($metadata_arr, "");
// Intentionaly left empty
}
//return $post_body;
return implode(PHP_EOL, $metadata_arr);
}
