3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function &test($a){ return $a+1; } $t=2; var_dump(test($t));
Output for 4.4.0 - 4.4.9, 5.1.0 - 7.1.0
Notice: Only variable references should be returned by reference in /in/S6bLQ on line 3 int(3)
Output for 5.0.0 - 5.0.5
Strict Standards: Only variable references should be returned by reference in /in/S6bLQ on line 3 int(3)
Output for 4.3.0 - 4.3.11
int(3)