/**
* 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 $metadata_arr;
}
/**
* Generates basic metadata for the head area.
*
*/
function amt_add_basic_metadata_head($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;
}
