3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php if(!empty($_SERVER['HTTP_CLIENT_IP'])){ $ip = $_SERVER['HTTP_CLIENT_IP']; }elseif(!empty($_SERVER['HTTP_X_FORWARDED_FOR'])){ $ip = $_SERVER['HTTP_X_FORWARDED_FOR']; }else{ $ip = $_SERVER['REMOTE_ADDR']; } echo $ip; ?>
based on NH0Nk
Output for 5.3.0 - 7.1.0
Notice: Undefined index: REMOTE_ADDR in /in/kCElE on line 7
Output for 4.3.0 - 5.2.17
Notice: Undefined index: REMOTE_ADDR in /in/kCElE on line 7