/**
* Print open graph and twitter card meta tags
*/
function pp_share_meta()
{
global $post;
/**
* ===
* This first section creates our meta tag values
* ===
*
*/
$meta = array();
/**
* Title
*/
$meta['title'] = false;
// On the homepage use the site name
if (is_home()) {
$meta['title'] = trim(get_bloginfo('name'));
} else {
// Otherwise, use the document title
$meta['title'] = trim(pp_get_document_title());
}
/**
* Site name
*/
$meta['site_name'] = get_bloginfo('name');
/**
* URL
*/
$meta['url'] = empty($_SERVER['HTTPS']) ? 'http' : 'https';
$meta['url'] .= '://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
/**
* Description
*/
$meta['description'] = false;
// For singles and pages, use the post body
if (is_single() || is_page()) {
$meta['description'] = $post->post_content;
$meta['description'] = preg_replace('/\\b(https?):\\/\\/[-A-Z0-9+&@#\\/%?=~_|$!:,.;]*[A-Z0-9+&@#\\/%=~_|$]/i', '', $meta['description']);
$meta['description'] = strip_tags(trim(substr($meta['description'], 0, 1500)));
} else {
// If there's no post body use the site description
$meta['description'] = get_bloginfo('description');
}
// Trim trim
$meta['description'] = trim($meta['description']);
/**
* Image
*
* $default_image can be set here for when there isn't an image.
* Feel free to expand this with conditions for images in custom fields.
*
*/
$meta['image'] = false;
$default_image = false;
// Set to something useful
// If there's a post thumbnail, use it
if (has_post_thumbnail() && !is_archive()) {
$meta['image'] = wp_get_attachment_image_src(get_post_thumbnail_id(), 'large');
$meta['image'] = $meta['image'][0];
} elseif ($default_image) {
// Otherwise, use the default
$meta['image'] = $default_image;
}
/**
* ===
* This section prints the tag values in their various formats
* ===
*
*/
/**
* Print open graph tags
*/
$open_graph_attributes = array('title', 'site_name', 'url', 'description', 'image');
foreach ($meta as $tag => $value) {
if ($value && in_array($tag, $open_graph_attributes)) {
echo '<meta property="og:' . $tag . '" content="' . $value . '" />' . "\n";
}
}
/**
* Print Twitter card stuff
*/
$twitter_card_attributes = array('title', 'description', 'image', 'url');
echo '<meta name="twitter:card" content="summary" />' . "\n";
foreach ($meta as $tag => $value) {
if ($value && in_array($tag, $twitter_card_attributes)) {
echo '<meta name="twitter:' . $tag . '" content="' . $value . '" />' . "\n";
}
}
}
/**
* Print the document title, used in the title tag and og:title.
*
* ### Usage
* ```php
* <title><?php document_title(); ?></title>
* ```
* @package pp
* @subpackage boilerplate-theme
*
* @uses pp_get_document_title()
* @link https://codex.wordpress.org/Function_Reference/wp_title WordPress's wp_title() function
*
*/
function pp_document_title()
{
echo pp_get_document_title();
}
