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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 |
|---|---|
| 2878 | * Filter the audio attachment metadata fields to be shown in the publish meta box. |
| 2879 | * |
| 2880 | * The key for each item in the array should correspond to an attachment |
| 2881 | * metadata key, and the value should be the desired label. |
| 2882 | * |
| 2883 | * @since 3.7.0 |
| 2884 | * |
| 2885 | * @param array $fields An array of the attachment metadata keys and labels. |
| 2886 | */ |
| 2887 | $audio_fields = apply_filters( 'audio_submitbox_misc_sections', array( |
| 2888 | 'dataformat' => __( 'Audio Format:' ), |
| 2889 | 'codec' => __( 'Audio Codec:' ) |
| 2890 | ) ); |
| 2891 | |
| 2892 | foreach ( $audio_fields as $key => $label ) { |
| 2893 | if ( empty( $meta['audio'][ $key ] ) ) { |
| 2894 | continue; |
| 2895 | } |
| 2896 | ?> |