- phpversion: documentation ( source)
- php_uname: documentation ( source)
- preg_replace: documentation ( source)
- getcwd: documentation ( source)
<?php
$res = false;
@preg_replace("/test/e\x00ing/i",'$res = true;',"test");
if(false===$res)echo 'Not ';
echo "Vulnerable, PHP ".phpversion().", ".php_uname()." ".getcwd();