3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function &test($a){ return $a*2; } var_dump(test(2));
Output for 4.4.0 - 4.4.9, 5.1.0 - 5.6.28, 7.0.0 - 7.1.0
Notice: Only variable references should be returned by reference in /in/MR9NH on line 3 int(4)
Output for 4.3.0 - 4.3.11, hhvm-3.10.0 - 3.12.0
int(4)
Output for 5.0.0 - 5.0.5
Strict Standards: Only variable references should be returned by reference in /in/MR9NH on line 3 int(4)