Delete comments and all their replies.
$cids: The comment to delete.
function comment_delete_multiple($cids) {
$comments = comment_load_multiple($cids);
if ($comments) {
$transaction = db_transaction();
try {
// Delete the comments.
db_delete('comment')
->condition('cid', array_keys($comments), 'IN')
->execute();
foreach ($comments as $comment) {
field_attach_delete('comment', $comment);
module_invoke_all('comment_delete', $comment);
module_invoke_all('entity_delete', $comment, 'comment');
// Delete the comment's replies.
$child_cids = db_query('SELECT cid FROM {comment} WHERE pid = :cid', array(
':cid' => $comment->cid,
))
->fetchCol();
comment_delete_multiple($child_cids);
_comment_update_node_statistics($comment->nid);
}
} catch (Exception $e) {
$transaction
->rollback();
watchdog_exception('comment', $e);
throw $e;
}
}
}