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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 |
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495 | $result = (bool) $wpdb->delete( $table, array( $id_column => $meta_id ) ); |
496 |
|
497 | // Clear the caches. |
498 | wp_cache_delete($object_id, $meta_type . '_meta'); |
499 |
|
500 | do_action( "deleted_{$meta_type}_meta", (array) $meta_id, $object_id, $meta->meta_key, $meta->meta_value ); |
501 |
|
502 | // Old-style action. |
503 | if ( 'post' == $meta_type || 'comment' == $meta_type ) |
504 | do_action( "deleted_{$meta_type}meta", $meta_id ); |
505 |
|
506 | return $result; |
507 |
|
508 | } |
509 |
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510 | // Meta id was not found. |
511 | return false; |
512 | } |
513 |
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