3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump(array_pop(range(1, 2)));
based on b0FJP
Output for 7.0.0 - 7.2.0
Notice: Only variables should be passed by reference in /in/fRM3C on line 3 int(2)
Output for 5.1.0 - 5.6.28
Strict Standards: Only variables should be passed by reference in /in/fRM3C on line 3 int(2)
Output for 5.0.5
Fatal error: Only variables can be passed by reference in /in/fRM3C on line 3
Process exited with code 255.
Output for 4.3.0 - 5.0.4
int(2)