3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $ip_address= NULL; if(! empty($_SERVER['HTTP_CLIENT_IP'])){ $ip_address = $_SERVER['HTTP_CLIENT_IP']; } else if(! empty($_SERVER['HTTP_X_FORWARDED_FOR'])){ $ip_address = $_SERVER['HTTP_X_FORWARDED_FOR']; } var_dump($ip_address); # var_dump($_SERVER);
based on JJWmg
Output for 4.3.0 - 5.0.5, 5.1.1 - 7.2.0
NULL
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/uIpPX on line 11
Process exited with code 255.