Menu Adam R Brown

WP hooks navigation: Home/browseActions indexFilters index

Source View: media_library_show_audio_playlist

To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).

Understanding Source Code

The best way to understand what a hook does is to look at where it occurs in the source code.

Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.

Source View

Line Code
4407       *
4408       * @since 4.7.4
4409       * @since 4.8.0 The filter's default value is `true` rather than `null`.
4410       *
4411       * @link https://core.trac.wordpress.org/ticket/31071
4412       *
4413       * @param bool|null $show Whether to show the button, or `null` to decide based
4414       *                        on whether any audio files exist in the media library.
4415       */
4416      $show_audio_playlist = apply_filters( 'media_library_show_audio_playlist', true );
4417      if ( null === $show_audio_playlist ) {
4418           $show_audio_playlist = $wpdb->get_var(
4419                "
4420                SELECT ID
4421                FROM $wpdb->posts
4422                WHERE post_type = 'attachment'
4423                AND post_mime_type LIKE 'audio%'
4424                LIMIT 1
4425           "