3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { public function test($foo = null) {} } class Bar extends Foo { public function test() {} }
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
Fatal error: Declaration of Bar::test() must be compatible with Foo::test($foo = null) in /in/6eMiu on line 7
Process exited with code 255.
Output for 7.4.0 - 7.4.33
Warning: Declaration of Bar::test() should be compatible with Foo::test($foo = NULL) in /in/6eMiu on line 7
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
Warning: Declaration of Bar::test() should be compatible with Foo::test($foo = NULL) in /in/6eMiu on line 8
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Strict Standards: Declaration of Bar::test() should be compatible with Foo::test($foo = NULL) in /in/6eMiu on line 8
preferences:
170.82 ms | 410 KiB | 5 Q