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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 |
---|---|
397 | // Old-style action. |
398 | if ( 'post' == $meta_type ) { |
399 | /** |
400 | * Fires immediately after deleting metadata for a post. |
401 | * |
402 | * @since 2.9.0 |
403 | * |
404 | * @param array $meta_ids An array of deleted post metadata entry IDs. |
405 | */ |
406 | do_action( 'deleted_postmeta', $meta_ids ); |
407 | } |
408 |
|
409 | return true; |
410 | } |
411 |
|
412 | /** |
413 | * Retrieve metadata for the specified object. |
414 | * |
415 | * @since 2.9.0 |