3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php class Foo { public function foo(string $foo = null) { echo $foo; } } $foo = new Foo; $foo->foo(); $foo->foo(null); $foo->foo('bar');
based on UMnnY
Output for 7.0.0 - 7.2.0
Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; Foo has a deprecated constructor in /in/I22pT on line 3 bar
Output for 5.3.20 - 5.6.28
Catchable fatal error: Argument 1 passed to Foo::foo() must be an instance of string, string given, called in /in/I22pT on line 13 and defined in /in/I22pT on line 5
Process exited with code 255.