3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { function __construct() { $this->setA(); } function setA() { echo "class a"; } } class B extends A { function setA() { echo "class b"; } } new B;
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
class b
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9

preferences:
274.15 ms | 401 KiB | 453 Q