3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $p = array(1,2); echo $p[end(array_keys($p))];
based on p17SE
Output for 7.0.0 - 7.2.0
Notice: Only variables should be passed by reference in /in/GdHoi on line 4 2
Output for 5.1.0 - 5.6.21
Strict Standards: Only variables should be passed by reference in /in/GdHoi on line 4 2
Output for 5.0.5
Fatal error: Only variables can be passed by reference in /in/GdHoi on line 4
Process exited with code 255.
Output for 4.3.0 - 5.0.4
2