WordPress Version: 6.3
/**
* Checks the HTML content for an audio, video, object, embed, or iframe tags.
*
* @since 3.6.0
*
* @param string $content A string of HTML which might contain media elements.
* @param string[] $types An array of media types: 'audio', 'video', 'object', 'embed', or 'iframe'.
* @return string[] Array of found HTML media elements.
*/
function get_media_embedded_in_content($content, $types = null)
{
$html = array();
/**
* Filters the embedded media types that are allowed to be returned from the content blob.
*
* @since 4.2.0
*
* @param string[] $allowed_media_types An array of allowed media types. Default media types are
* 'audio', 'video', 'object', 'embed', and 'iframe'.
*/
$allowed_media_types = apply_filters('media_embedded_in_content_allowed_types', array('audio', 'video', 'object', 'embed', 'iframe'));
if (!empty($types)) {
if (!is_array($types)) {
$types = array($types);
}
$allowed_media_types = array_intersect($allowed_media_types, $types);
}
$tags = implode('|', $allowed_media_types);
if (preg_match_all('#<(?P<tag>' . $tags . ')[^<]*?(?:>[\s\S]*?<\/(?P=tag)>|\s*\/>)#', $content, $matches)) {
foreach ($matches[0] as $match) {
$html[] = $match;
}
}
return $html;
}