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run code in 150+ php & hhvm versions
Bugs & Features
<?php echo "Your User Agent is :" . $_SERVER ['HTTP_USER_AGENT']; ?> - See more at: http://www.w3resource.com/php-exercises/php-basic-exercises.php#EDITOR
Output for 5.3.0 - 5.6.28, hhvm-3.10.0 - 3.13.2, 7.0.0 - 7.1.0
Notice: Undefined index: HTTP_USER_AGENT in /in/EV5K7 on line 2 Your User Agent is :- See more at: http://www.w3resource.com/php-exercises/php-basic-exercises.php#EDITOR
Output for 4.3.0 - 5.2.17
Notice: Undefined index: HTTP_USER_AGENT in /in/EV5K7 on line 2 Your User Agent is :- See more at: http://www.w3resource.com/php-exercises/php-basic-exercises.php#EDITOR