3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { function bar(iterable $a) {}} class B extends A { function bar($a) {}}
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33
Warning: Declaration of B::bar($a) should be compatible with A::bar(iterable $a) in /in/1vIsF on line 4
Output for 5.6.0 - 5.6.27
Strict Standards: Declaration of B::bar() should be compatible with A::bar(iterable $a) in /in/1vIsF on line 4
preferences:
119.13 ms | 401 KiB | 222 Q