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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 |
---|---|
2919 | * Filters the audio attachment metadata fields to be shown in the publish meta box. |
2920 | * |
2921 | * The key for each item in the array should correspond to an attachment |
2922 | * metadata key, and the value should be the desired label. |
2923 | * |
2924 | * @since 3.7.0 |
2925 | * |
2926 | * @param array $fields An array of the attachment metadata keys and labels. |
2927 | */ |
2928 | $audio_fields = apply_filters( 'audio_submitbox_misc_sections', array( |
2929 | 'dataformat' => __( 'Audio Format:' ), |
2930 | 'codec' => __( 'Audio Codec:' ) |
2931 | ) ); |
2932 |
|
2933 | foreach ( $audio_fields as $key => $label ) { |
2934 | if ( empty( $meta['audio'][ $key ] ) ) { |
2935 | continue; |
2936 | } |
2937 | ?> |