3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo{ function method($a){ } } class Bar extends Foo{ function method(array $a){ } }
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.31, 8.2.0 - 8.2.26, 8.3.0 - 8.3.15, 8.4.1 - 8.4.2
Fatal error: Declaration of Bar::method(array $a) must be compatible with Foo::method($a) in /in/fSIbS on line 8
Process exited with code 255.
Output for 7.4.0 - 7.4.33
Warning: Declaration of Bar::method(array $a) should be compatible with Foo::method($a) in /in/fSIbS on line 8
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::method(array $a) should be compatible with Foo::method($a) in /in/fSIbS on line 11
Output for 5.6.0 - 5.6.40
Strict Standards: Declaration of Bar::method() should be compatible with Foo::method($a) in /in/fSIbS on line 11
preferences:
87.2 ms | 409 KiB | 5 Q