Limiting also the number of comments

For those who are interested in limiting also the number of comments, here is the changes you need to do:

In node_limitnumber.module, add at the end the following function:

function node_limitnumber_comment($a1, $op) {
  global $user;

  // Verify that the user is not editing a previously posted node
  $url = preg_replace('/\//', '_', $_GET['q']);
  $r = strpos($url, t('edit'));
  
  $account = $user;

  if (($op == "form" || $op == "validate") && !$r && $user->uid != 1){
                $limit = _get_limits_for_user ($account, 'comment');
  
  		if (!empty($limit)) { 
  		
  			$count = db_result(db_query("SELECT COUNT(*) AS cnt FROM {comments} t WHERE t.timestamp >= ". (time()-3600). " AND t.uid = '$account->uid'"));
  
  				if ($count >= $limit) {
  				        form_set_error('', t("Sorry, you have reached the maximum of !limit comments you can post per hour.", array ('!limit' => $limit)));
                                        watchdog('quota_by_role', "Reached limit of comments per hour");      
  				} 
  			
		}
    
  }
} 

In node_limitnumber.inc

Add after lines 17 and 61 ($pubtypes = node_get_types('names');), the following line:

$pubtypes['comment'] = "Comment";