/**
* Check the content blob for an <audio>, <video> <object>, <embed>, or <iframe>
*
* @since 3.6.0
*
* @param string $content A string which might contain media data.
* @param array $types array of media types: 'audio', 'video', 'object', 'embed', or 'iframe'
* @return array A list of found HTML media embeds
*/
function get_media_embedded_in_content($content, $types = null)
{
$html = array();
$allowed_media_types = array('audio', 'video', 'object', 'embed', 'iframe');
if (!empty($types)) {
if (!is_array($types)) {
$types = array($types);
}
$allowed_media_types = array_intersect($allowed_media_types, $types);
}
foreach ($allowed_media_types as $tag) {
if (preg_match('#' . get_tag_regex($tag) . '#', $content, $matches)) {
$html[] = $matches[0];
}
}
return $html;
}
/**
* Extract and return the first image from passed content.
*
* @since 3.1.0
* @link https://core.trac.wordpress.org/browser/trunk/wp-includes/media.php?rev=24240#L2223
*
* @param string $content A string which might contain a URL.
* @return string The found URL.
*/
public function get_image_in_content($content)
{
$image = '';
if (!empty($content) && preg_match('#' . get_tag_regex('img') . '#i', $content, $matches) && !empty($matches)) {
// @todo Sanitize this.
$image = $matches[0];
}
return $image;
}
/**
* Retrieve the attachment post id from HTML containing an image.
*
* @since 3.6.0
*
* @param string $html The html, possibly with an image
* @param string $matched_html Passed by reference, will be set to to the matched img string
* @return int The attachment id if found, or 0.
*/
function img_html_to_post_id($html, &$matched_html = null)
{
$attachment_id = 0;
// Look for an <img /> tag
if (!preg_match('#' . get_tag_regex('img') . '#i', $html, $matches) || empty($matches)) {
return $attachment_id;
}
$matched_html = $matches[0];
// Look for attributes.
if (!preg_match_all('#(src|class)=([\'"])(.+?)\\2#is', $matched_html, $matches) || empty($matches)) {
return $attachment_id;
}
$attr = array();
foreach ($matches[1] as $key => $attribute_name) {
$attr[$attribute_name] = $matches[3][$key];
}
if (!empty($attr['class']) && false !== strpos($attr['class'], 'wp-image-')) {
if (preg_match('#wp-image-([0-9]+)#i', $attr['class'], $matches)) {
$attachment_id = absint($matches[1]);
}
}
if (!$attachment_id && !empty($attr['src'])) {
$attachment_id = attachment_url_to_postid($attr['src']);
}
return $attachment_id;
}
/**
* Store any wanted media for later use and process $content to strip them out of it
* Argument $types receives an array of wanted media types: 'audio', 'video', 'object', 'embed', or 'iframe'.
* Function based on get_media_embedded_in_content() from media.php (in Core @since 3.6.0).
*/
function quadro_print_media($content, $types = null, $amount = 999, $before, $after)
{
$allowed_media_types = array('audio', 'video', 'object', 'embed', 'iframe');
$media = '';
$i = 0;
if (!empty($types)) {
if (!is_array($types)) {
$types = array($types);
}
$allowed_media_types = array_intersect($allowed_media_types, $types);
}
// Filter through the_content filter
$content = apply_filters('the_content', $content);
$content = str_replace(']]>', ']]>', $content);
foreach ($allowed_media_types as $tag) {
if (preg_match_all('#' . get_tag_regex($tag) . '#', $content, $elements)) {
foreach ($elements[0] as $element) {
$media .= $before . $element . $after;
// Remove element from $content
$content = str_replace($element, '', $content);
// Exit this if we reached the requested amount.
$i++;
if ($amount == $i) {
break 2;
}
}
}
}
// Return the results, content and requested media apart
return array('content' => $content, 'media' => $media);
}
