3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php echo preg_match('/(?i)msie [1-8]/',$_SERVER['HTTP_USER_AGENT']) ?>
Output for 5.3.0 - 7.1.0
Notice: Undefined index: HTTP_USER_AGENT in /in/Hkrg9 on line 2 0
Output for 4.3.0 - 5.2.17
Notice: Undefined index: HTTP_USER_AGENT in /in/Hkrg9 on line 2 0