3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { public function x() { $this->foo(); } protected function foo() { print "A"; } } class B extends A { public function foo() { print "B"; } } (new B)->x(); (new A)->x();
Output for 5.6.0 - 5.6.29, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 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
BA
preferences:
128.43 ms | 404 KiB | 208 Q