3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function add(int $a, int $b) { return $a+$b; } $a = add(1,2); echo "$a";
based on nBoJB
Output for 7.0.0 - 7.2.0
3
Output for 5.3.21 - 5.6.28
Catchable fatal error: Argument 1 passed to add() must be an instance of int, integer given, called in /in/5vRb3 on line 7 and defined in /in/5vRb3 on line 3
Process exited with code 255.