wp-includes/widgets/class-wp-widget-media-gallery.php:248Whether the widget has content to show.
$instancearraybool protected function has_content( $instance ) { if ( ! empty( $instance['ids'] ) ) { $attachments = wp_parse_id_list( $instance['ids'] ); // Prime attachment post caches. _prime_post_caches( $attachments, false, false ); foreach ( $attachments as $attachment ) { if ( 'attachment' !== get_post_type( $attachment ) ) { return false; } } return true; } return false; }Introduced in 4.9.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/widgets/class-wp-widget-media-gallery.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.