3v4l.org

run code in 300+ PHP versions simultaneously
<?php interface Foo { function bar($foo); } class Qux implements Foo { public function bar(Qux $foo) {} }
Output for 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
Fatal error: Declaration of Qux::bar(Qux $foo) must be compatible with Foo::bar($foo) in /in/33oEK on line 6
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
Fatal error: Declaration of Qux::bar(Qux $foo) must be compatible with Foo::bar($foo) in /in/33oEK on line 5
Process exited with code 255.
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Fatal error: Declaration of Qux::bar() must be compatible with Foo::bar($foo) in /in/33oEK on line 5
Process exited with code 255.
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