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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 |
|---|---|
| 1536 | /** |
| 1537 | * Fires immediately before a comment is sent to the Trash. |
| 1538 | * |
| 1539 | * @since 2.9.0 |
| 1540 | * @since 4.9.0 Added the `$comment` parameter. |
| 1541 | * |
| 1542 | * @param string $comment_id The comment ID as a numeric string. |
| 1543 | * @param WP_Comment $comment The comment to be trashed. |
| 1544 | */ |
| 1545 | do_action( 'trash_comment', $comment->comment_ID, $comment ); |
| 1546 | |
| 1547 | if ( wp_set_comment_status( $comment, 'trash' ) ) { |
| 1548 | delete_comment_meta( $comment->comment_ID, '_wp_trash_meta_status' ); |
| 1549 | delete_comment_meta( $comment->comment_ID, '_wp_trash_meta_time' ); |
| 1550 | add_comment_meta( $comment->comment_ID, '_wp_trash_meta_status', $comment->comment_approved ); |
| 1551 | add_comment_meta( $comment->comment_ID, '_wp_trash_meta_time', time() ); |
| 1552 | |
| 1553 | /** |
| 1554 | * Fires immediately after a comment is sent to Trash. |