3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php echo $_SYSTEM['PHP_SELF'];
based on 0S9li
Output for 5.0.4 - 7.1.0
Notice: Undefined variable: _SYSTEM in /in/ZddSZ on line 2
Output for 4.3.0 - 5.0.3
Notice: Undefined variable: _SYSTEM in /in/ZddSZ on line 2