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, $c = null) { } // not compatible with A::example }
Output for 8.5.0 - 8.5.3
Fatal error: Declaration of B::example($a, $b, $c = null) must be compatible with A::example($a, $b = null, $c = null) in /in/bJJ1h on line 10 Stack trace: #0 {main}
Process exited with code 255.
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18
Fatal error: Declaration of B::example($a, $b, $c = null) must be compatible with A::example($a, $b = null, $c = null) in /in/bJJ1h on line 10
Process exited with code 255.
Output for 7.4.0 - 7.4.33
Warning: Declaration of B::example($a, $b, $c = NULL) should be compatible with A::example($a, $b = NULL, $c = NULL) in /in/bJJ1h on line 10
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
Warning: Declaration of B::example($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
preferences:
81.16 ms | 1991 KiB | 4 Q