3v4l.org

run code in 300+ PHP versions simultaneously
<?php ini_set('display_errors', 1); error_reporting(E_ALL); abstract class A { abstract protected static function foo(); } class B extends A { protected static function foo() { return 123; } public static function doFoo() { return static::foo(); } } $b = new B(); var_dump( $b->doFoo() );
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, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
int(123)
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Strict Standards: Static function A::foo() should not be abstract in /in/4mno0 on line 6 int(123)
preferences:
200.91 ms | 402 KiB | 230 Q