3v4l.org

run code in 300+ PHP versions simultaneously
<?php //error_reporting(E_STRICT); class A{ function foo(){} } class B extends A{ function foo($a){} }
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Declaration of B::foo($a) must be compatible with A::foo() in /in/Q10nS on line 7
Process exited with code 255.
Output for 7.4.0 - 7.4.33
Warning: Declaration of B::foo($a) should be compatible with A::foo() in /in/Q10nS on line 7
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
Warning: Declaration of B::foo($a) should be compatible with A::foo() in /in/Q10nS on line 8
Output for 5.4.2 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28
Strict Standards: Declaration of B::foo() should be compatible with A::foo() in /in/Q10nS on line 8
preferences:
226.48 ms | 402 KiB | 273 Q