3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php print_r( $_SESSION );
Output for 5.0.4 - 7.1.7
Notice: Undefined variable: _SESSION in /in/SNv8Y on line 1
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: _SESSION in /in/SNv8Y on line 1