(stripos($content,'.com') || stripos($content,'.cn') || stripos($content,'.net')|| stripos($content,'.org')|| stripos($content,'.cc')|| stripos($content,'.com.cn')) && $this->message(0, '内容不可以留网址！');

(stripos($author,'.com') || stripos($author,'.cn') || stripos($author,'.net')|| stripos($author,'.org')|| stripos($author,'.cc')|| stripos($author,'.com.cn')) && $this->message(0, '昵称不可以写网址！');