3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php declare(strict_types=1); function a(int &$a, string &$b) { $b = &$a; } $a = 1; $b = "abc"; a($a, $b);
based on fncmu
Output for 7.0.0 - 7.3.0beta1
Output for 5.5.0 - 5.6.28
Warning: Unsupported declare 'strict_types' in /in/cK6oJ on line 3 Catchable fatal error: Argument 1 passed to a() must be an instance of int, integer given, called in /in/cK6oJ on line 11 and defined in /in/cK6oJ on line 5
Process exited with code 255.