3v4l.org

run code in 300+ PHP versions simultaneously
<?php //interface I { // public function example($a, $b, $c); //} class A { public function example($a, $b = null, $c = null) { } } class B extends A { public function example($a, $b, $c = null) { } // not compatible with A::example }
Output for 8.0.0 - 8.0.8
Fatal error: Declaration of B::example($a, $b, $c = null) must be compatible with A::example($a, $b = null, $c = null) in /in/bJJ1h on line 10
Process exited with code 255.
Output for 7.4.0 - 7.4.22
Warning: Declaration of B::example($a, $b, $c = NULL) should be compatible with A::example($a, $b = NULL, $c = NULL) in /in/bJJ1h on line 10
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.29
Warning: Declaration of B::example($a, $b, $c = NULL) should be compatible with A::example($a, $b = NULL, $c = NULL) in /in/bJJ1h on line 11
Output for 5.6.0 - 5.6.40
Strict Standards: Declaration of B::example() should be compatible with A::example($a, $b = NULL, $c = NULL) in /in/bJJ1h on line 11

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