3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { function foo($a) {} } class B extends A { function foo() {} } (new B())->foo();
Output for 8.5.0 - 8.5.3
Fatal error: Declaration of B::foo() must be compatible with A::foo($a) in /in/d6XVP on line 7 Stack trace: #0 {main}
Process exited with code 255.
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18
Fatal error: Declaration of B::foo() must be compatible with A::foo($a) in /in/d6XVP on line 7
Process exited with code 255.
Output for 7.4.0 - 7.4.33
Warning: Declaration of B::foo() should be compatible with A::foo($a) in /in/d6XVP on line 7
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
Warning: Declaration of B::foo() should be compatible with A::foo($a) in /in/d6XVP on line 8
preferences:
105.86 ms | 1492 KiB | 4 Q