3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php browser(); function browser() { $browsers = array('chrome', 'msie', 'firefox', 'safari'); for ($i = 0; $i < count($browsers) + 1; $i++) { if ($_SERVER['HTTP_USER_AGENT'] == $browsers[$i]) { echo "You are using {$browsers[$i]}."; } } }
Output for 5.3.0 - 7.1.7
Notice: Undefined index: HTTP_USER_AGENT in /in/DqJhb on line 6 Notice: Undefined index: HTTP_USER_AGENT in /in/DqJhb on line 6 Notice: Undefined index: HTTP_USER_AGENT in /in/DqJhb on line 6 Notice: Undefined index: HTTP_USER_AGENT in /in/DqJhb on line 6 Notice: Undefined index: HTTP_USER_AGENT in /in/DqJhb on line 6 Notice: Undefined offset: 4 in /in/DqJhb on line 6 Notice: Undefined offset: 4 in /in/DqJhb on line 7 You are using .
Output for 4.3.0 - 5.2.17
Notice: Undefined index: HTTP_USER_AGENT in /in/DqJhb on line 6 Notice: Undefined index: HTTP_USER_AGENT in /in/DqJhb on line 6 Notice: Undefined index: HTTP_USER_AGENT in /in/DqJhb on line 6 Notice: Undefined index: HTTP_USER_AGENT in /in/DqJhb on line 6 Notice: Undefined index: HTTP_USER_AGENT in /in/DqJhb on line 6 Notice: Undefined offset: 4 in /in/DqJhb on line 6 Notice: Undefined offset: 4 in /in/DqJhb on line 7 You are using .