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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 |
|---|---|
| 938 | |
| 939 | $audio = reset( $audios ); |
| 940 | $src = wp_get_attachment_url( $audio->ID ); |
| 941 | if ( empty( $src ) ) |
| 942 | return; |
| 943 | |
| 944 | array_unshift( $default_types, 'src' ); |
| 945 | } |
| 946 | |
| 947 | $library = apply_filters( 'wp_audio_shortcode_library', 'mediaelement' ); |
| 948 | if ( 'mediaelement' === $library && did_action( 'init' ) ) { |
| 949 | wp_enqueue_style( 'wp-mediaelement' ); |
| 950 | wp_enqueue_script( 'wp-mediaelement' ); |
| 951 | } |
| 952 | |
| 953 | $atts = array( |
| 954 | 'class' => apply_filters( 'wp_audio_shortcode_class', 'wp-audio-shortcode' ), |
| 955 | 'id' => sprintf( 'audio-%d-%d', $post_id, $instances ), |
| 956 | 'loop' => $loop, |