3v4l.org

run code in 300+ PHP versions simultaneously
<?php $login = "\");"; if(!empty($HTTP_SERVER_VARS['REMOTE_ADDR'])) putenv("LOGIN=" . $_SERVER['REMOTE_ADDR']); else putenv('LOGIN=noref'); $test = getenv("LOGIN"); echo "LOGIN = " .$test;

preferences:
29.34 ms | 402 KiB | 5 Q