3v4l.org

run code in 500+ PHP versions simultaneously
<?php class A extends stdClass {}; class B extends A {}; $b = new B(); $b->foo = 'bar';
Output for 8.1.23 - 8.1.34, 8.2.10 - 8.2.31, 8.3.0 - 8.3.31, 8.4.1 - 8.4.22, 8.5.0 - 8.5.7
preferences:
65.72 ms | 865 KiB | 4 Q