3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $address = getenv("REMOTE_ADDR"); echo $address; // Or simply use a Superglobal ($_SERVER or $_ENV) $ip = $_SERVER['REMOTE_ADDR']; ?>
Output for 5.3.0 - 7.2.0
Notice: Undefined index: REMOTE_ADDR in /in/cYX4p on line 5
Output for 4.3.0 - 5.2.17
Notice: Undefined index: REMOTE_ADDR in /in/cYX4p on line 5