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<?php class A { function foo($a) { var_dump($a); } } class B extends A { function foo($a, $b) { var_dump($a, $b); } } $b = new B; $b->foo(1, 2);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
Fatal error: Declaration of B::foo($a, $b) must be compatible with A::foo($a) in /in/HYBf4 on line 10
Process exited with code 255.
Output for 7.4.0 - 7.4.33
Warning: Declaration of B::foo($a, $b) should be compatible with A::foo($a) in /in/HYBf4 on line 10 int(1) int(2)
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33
Warning: Declaration of B::foo($a, $b) should be compatible with A::foo($a) in /in/HYBf4 on line 11 int(1) int(2)
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28
Strict Standards: Declaration of B::foo() should be compatible with A::foo($a) in /in/HYBf4 on line 11 int(1) int(2)
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Strict Standards: Declaration of B::foo() should be compatible with that of A::foo() in /in/HYBf4 on line 11 int(1) int(2)
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9
int(1) int(2)

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