3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php echo array_pop(array(1));
Output for 4.3.2 - 5.6.30, hhvm-3.10.1, 7.0.0 - 7.1.2
Fatal error: Only variables can be passed by reference in /in/rHgQj on line 3
Process exited with code 255.
Output for hhvm-3.11.1 - 3.17.3
Fatal error: Uncaught Error: Only variables can be passed by reference in /in/rHgQj:3 Stack trace: #0 {main}
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Only variables can be passed by reference in /in/rHgQj on line 3