Новички не могут адекватно вставлять sql запросы в сообщения : Вопросы сервера

if (!is_member_of($vbulletin->userinfo, $groups) OR $groups[0] == 0) 
{ 
$pagetext = $this->fetch_field('pagetext','post'); 
$pagetext = str_replace('[url]https://olegon.ru','',$pagetext);
$pagetext = str_replace('[url="https://olegon.ru','',$pagetext);
$pagetext = str_replace('https://olegon.ru','',$pagetext);
$pagetext = str_replace('[url="https://storage.olegon.ru','',$pagetext);
$pagetext = str_replace('[url]https://storage.olegon.ru','',$pagetext);
$pagetext = str_replace('https://storage.olegon.ru','',$pagetext);
if ((stristr($pagetext,'[url') or stristr($pagetext,'://') or stristr($pagetext,'[URL') or stristr($pagetext,'www.') or stristr($pagetext,'.ru') or stristr($pagetext,'.net') or stristr($pagetext,'.com'))) 
    { 
    $this->error('restrict_by_rules'); 
    $return_value = false; 
    } 
}