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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 892 | |
| 893 | $audio = reset( $audios ); |
| 894 | $src = wp_get_attachment_url( $audio->ID ); |
| 895 | if ( empty( $src ) ) |
| 896 | return; |
| 897 | |
| 898 | array_unshift( $default_types, 'src' ); |
| 899 | } |
| 900 | |
| 901 | $library = apply_filters( 'wp_audio_shortcode_library', 'mediaelement' ); |
| 902 | if ( 'mediaelement' === $library && did_action( 'init' ) ) { |
| 903 | wp_enqueue_style( 'wp-mediaelement' ); |
| 904 | wp_enqueue_script( 'wp-mediaelement' ); |
| 905 | } |
| 906 | |
| 907 | $atts = array( |
| 908 | 'class' => apply_filters( 'wp_audio_shortcode_class', 'wp-audio-shortcode' ), |
| 909 | 'id' => sprintf( 'audio-%d-%d', $post_id, $instances ), |
| 910 | 'loop' => $loop, |