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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 |
|---|---|
| 946 | */ |
| 947 | function wp_delete_comment($comment_id, $force_delete = false) { |
| 948 | global $wpdb; |
| 949 | if (!$comment = get_comment($comment_id)) |
| 950 | return false; |
| 951 | |
| 952 | if ( !$force_delete && EMPTY_TRASH_DAYS && !in_array( wp_get_comment_status($comment_id), array( 'trash', 'spam' ) ) ) |
| 953 | return wp_trash_comment($comment_id); |
| 954 | |
| 955 | do_action('delete_comment', $comment_id); |
| 956 | |
| 957 | // Move children up a level. |
| 958 | $children = $wpdb->get_col( $wpdb->prepare("SELECT comment_ID FROM $wpdb->comments WHERE comment_parent = %d", $comment_id) ); |
| 959 | if ( !empty($children) ) { |
| 960 | $wpdb->update($wpdb->comments, array('comment_parent' => $comment->comment_parent), array('comment_parent' => $comment_id)); |
| 961 | clean_comment_cache($children); |
| 962 | } |
| 963 | |
| 964 | // Delete metadata |