3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $n = 2; var_dump(key(array_values([1,2,3]))); var_dump(end(array_values([1,2,3])));
based on IUGYu
Output for 7.0.0 - 7.2.0
int(0) Notice: Only variables should be passed by reference in /in/b70OD on line 4 int(3)
Output for 5.4.0 - 5.6.28
int(0) Strict Standards: Only variables should be passed by reference in /in/b70OD on line 4 int(3)
Output for 5.3.19 - 5.3.29
Parse error: syntax error, unexpected '[', expecting ')' in /in/b70OD on line 3
Process exited with code 255.