3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function test(int $n = NULL) { var_dump($n); } test(); test(NULL); test(123); test('123');
Output for 7.0.0 - 7.2.0
NULL NULL int(123) int(123)
Output for 5.3.22 - 5.6.28
NULL NULL Catchable fatal error: Argument 1 passed to test() must be an instance of int, integer given, called in /in/9N8lf on line 10 and defined in /in/9N8lf on line 3
Process exited with code 255.