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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 |
|---|---|
| 1535 | * Fires when the comment status is in transition from one specific status to another. |
| 1536 | * |
| 1537 | * The dynamic portions of the hook name, $old_status, and $new_status, |
| 1538 | * refer to the old and new comment statuses, respectively. |
| 1539 | * |
| 1540 | * @since 2.7.0 |
| 1541 | * |
| 1542 | * @param object $comment Comment object. |
| 1543 | */ |
| 1544 | do_action( "comment_{$old_status}_to_{$new_status}", $comment ); |
| 1545 | } |
| 1546 | /** |
| 1547 | * Fires when the status of a specific comment type is in transition. |
| 1548 | * |
| 1549 | * The dynamic portions of the hook name, $new_status, and $comment->comment_type, |
| 1550 | * refer to the new comment status, and the type of comment, respectively. |
| 1551 | * |
| 1552 | * Typical comment types include an empty string (standard comment), 'pingback', |
| 1553 | * or 'trackback'. |