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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 |
|---|---|
| 2937 | * Filters the audio attachment metadata fields to be shown in the publish meta box. |
| 2938 | * |
| 2939 | * The key for each item in the array should correspond to an attachment |
| 2940 | * metadata key, and the value should be the desired label. |
| 2941 | * |
| 2942 | * @since 3.7.0 |
| 2943 | * |
| 2944 | * @param array $fields An array of the attachment metadata keys and labels. |
| 2945 | */ |
| 2946 | $audio_fields = apply_filters( 'audio_submitbox_misc_sections', array( |
| 2947 | 'dataformat' => __( 'Audio Format:' ), |
| 2948 | 'codec' => __( 'Audio Codec:' ) |
| 2949 | ) ); |
| 2950 | |
| 2951 | foreach ( $audio_fields as $key => $label ) { |
| 2952 | if ( empty( $meta['audio'][ $key ] ) ) { |
| 2953 | continue; |
| 2954 | } |
| 2955 | ?> |