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run code in 200+ php & hhvm versions
Bugs & Features
<?php $allowed_ips = array("80.63.34.202"); if(!in_array($_SERVER['REMOTE_ADDR'], $allowed_ips)) print 'redirect'; else print 'good to go'; ?>
Output for 5.3.0 - 7.1.10
Notice: Undefined index: REMOTE_ADDR in /in/ODB1X on line 5 redirect
Output for 4.3.0 - 5.2.17
Notice: Undefined index: REMOTE_ADDR in /in/ODB1X on line 5 redirect