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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 |
|---|---|
| 457 | // Old-style action. |
| 458 | if ( 'post' == $meta_type ) { |
| 459 | /** |
| 460 | * Fires immediately after deleting metadata for a post. |
| 461 | * |
| 462 | * @since 2.9.0 |
| 463 | * |
| 464 | * @param array $meta_ids An array of deleted post metadata entry IDs. |
| 465 | */ |
| 466 | do_action( 'deleted_postmeta', $meta_ids ); |
| 467 | } |
| 468 | |
| 469 | return true; |
| 470 | } |
| 471 | |
| 472 | /** |
| 473 | * Retrieve metadata for the specified object. |
| 474 | * |
| 475 | * @since 2.9.0 |