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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 |
|---|---|
| 1381 | * Fires when the comment status is in transition from one specific status to another. |
| 1382 | * |
| 1383 | * The dynamic portions of the hook name, `$old_status`, and `$new_status`, |
| 1384 | * refer to the old and new comment statuses, respectively. |
| 1385 | * |
| 1386 | * @since 2.7.0 |
| 1387 | * |
| 1388 | * @param WP_Comment $comment Comment object. |
| 1389 | */ |
| 1390 | do_action( "comment_{$old_status}_to_{$new_status}", $comment ); |
| 1391 | } |
| 1392 | /** |
| 1393 | * Fires when the status of a specific comment type is in transition. |
| 1394 | * |
| 1395 | * The dynamic portions of the hook name, `$new_status`, and `$comment->comment_type`, |
| 1396 | * refer to the new comment status, and the type of comment, respectively. |
| 1397 | * |
| 1398 | * Typical comment types include an empty string (standard comment), 'pingback', |
| 1399 | * or 'trackback'. |