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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 |
|---|---|
| 3450 | $post_id = $post->ID; |
| 3451 | |
| 3452 | /** |
| 3453 | * Fires before comments are sent to the Trash. |
| 3454 | * |
| 3455 | * @since 2.9.0 |
| 3456 | * |
| 3457 | * @param int $post_id Post ID. |
| 3458 | */ |
| 3459 | do_action( 'trash_post_comments', $post_id ); |
| 3460 | |
| 3461 | $comments = $wpdb->get_results( $wpdb->prepare( "SELECT comment_ID, comment_approved FROM $wpdb->comments WHERE comment_post_ID = %d", $post_id ) ); |
| 3462 | |
| 3463 | if ( ! $comments ) { |
| 3464 | return; |
| 3465 | } |
| 3466 | |
| 3467 | // Cache current status for each comment. |
| 3468 | $statuses = array(); |