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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 |
|---|---|
| 1463 | * Fires when the comment status is in transition from one specific status to another. |
| 1464 | * |
| 1465 | * The dynamic portions of the hook name, $old_status, and $new_status, |
| 1466 | * refer to the old and new comment statuses, respectively. |
| 1467 | * |
| 1468 | * @since 2.7.0 |
| 1469 | * |
| 1470 | * @param object $comment Comment object. |
| 1471 | */ |
| 1472 | do_action( "comment_{$old_status}_to_{$new_status}", $comment ); |
| 1473 | } |
| 1474 | /** |
| 1475 | * Fires when the status of a specific comment type is in transition. |
| 1476 | * |
| 1477 | * The dynamic portions of the hook name, $new_status, and $comment->comment_type, |
| 1478 | * refer to the new comment status, and the type of comment, respectively. |
| 1479 | * |
| 1480 | * Typical comment types include an empty string (standard comment), 'pingback', |
| 1481 | * or 'trackback'. |