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run code in 200+ php & hhvm versions
Bugs & Features
<?php echo $_SERVER['HTTP_X_REQUESTED_WITH']; ?>
Output for 5.3.0 - 7.2.0
Notice: Undefined index: HTTP_X_REQUESTED_WITH in /in/ds3RL on line 2
Output for 4.3.0 - 5.2.17
Notice: Undefined index: HTTP_X_REQUESTED_WITH in /in/ds3RL on line 2