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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 |
---|---|
2421 | /** |
2422 | * Filters the editable list of keys to look up data from an attachment's metadata. |
2423 | * |
2424 | * @since 3.9.0 |
2425 | * |
2426 | * @param array $fields Key/value pairs of field keys to labels. |
2427 | * @param WP_Post $attachment Attachment object. |
2428 | * @param string $context The context. Accepts 'edit', 'display'. Default 'display'. |
2429 | */ |
2430 | return apply_filters( 'wp_get_attachment_id3_keys', $fields, $attachment, $context ); |
2431 | } |
2432 | /** |
2433 | * Builds the Audio shortcode output. |
2434 | * |
2435 | * This implements the functionality of the Audio Shortcode for displaying |
2436 | * WordPress mp3s in a post. |
2437 | * |
2438 | * @since 3.6.0 |
2439 | * |