wp-includes/media.php:3044Builds the Playlist shortcode output.
$attrarray$typestringdefault: 'audio'
$orderstringdefault: 'ASC'
$orderbystring
$idintdefault: is the current post ID
$idsarraydefault: empty
$excludearraydefault: empty
$stylestringdefault: 'light'
$tracklistbooldefault: true
$tracknumbersbooldefault: true
$imagesbooldefault: true
$artistsbooldefault: true
string2 hooks fire while wp_playlist_shortcode() runs, in this order:
Prints and enqueues playlist scripts, styles, and JavaScript templates.
function wp_playlist_shortcode( $attr ) { global $content_width; $post = get_post(); static $instance = 0; ++$instance; if ( ! empty( $attr['ids'] ) ) { // 'ids' is explicitly ordered, unless you specify otherwise. if ( empty( $attr['orderby'] ) ) { $attr['orderby'] = 'post__in'; } $attr['include'] = $attr['ids']; } /** * Filters the playlist output. * * Returning a non-empty value from the filter will short-circuit generation * of the default playlist output, returning the passed value instead. * * @since 3.9.0 * @since 4.2.0 The `$instance` parameter was added. * * @param string $output Playlist output. Default empty. * @param array $attr An array of shortcode attributes. * @param int $instance Unique numeric ID of this playlist shortcode instance. */ $output = apply_filters( 'post_playlist', '', $attr, $instance ); if ( ! empty( $output ) ) { return $output; } $atts = shortcode_atts( array( 'type' => 'audio', 'order' => 'ASC', 'orderby' => 'menu_order ID', 'id' => $post ? $post->ID : 0, 'include' => '', 'exclude' => '', 'style' => 'light', 'tracklist' => true, 'tracknumbers' => true, 'images' => true, 'artists' => true, ), $attr, 'playlist' ); $id = (int) $atts['id']; if ( 'audio' !== $atts['type'] ) { $atts['type'] = 'video'; } $args = array( 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => $atts['type'], 'order' => $atts['order'], 'orderby' => $atts['orderby'], ); if ( ! empty( $atts['include'] ) ) { $args['include'] = $atts['include']; $_attachments = get_posts( $args ); $attachments = array(); foreach ( $_attachments as $key => $val ) { $attachments[ $val->ID ] = $_attachments[ $key ]; } } elseif ( ! empty( $atts['exclude'] ) ) { $args['post_parent'] = $id; $args['exclude'] = $atts['exclude']; $attachments = get_children( $args ); } else { $args['post_parent'] = $id;Introduced in 3.9.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/media.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.