3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo {} class Bar extends Foo {} class Baz extends Bar {} $object = new Baz(); $tree = array(); $class = get_class($object); do { $tree[] = $class; } while ($class = get_parent_class($class)); var_dump($tree);
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 - 5.6.30, 7.0.0 - 7.0.20, 7.1.0 - 7.1.7, 7.2.29 - 7.2.33, 7.3.16 - 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 - 8.3.6
array(3) { [0]=> string(3) "Baz" [1]=> string(3) "Bar" [2]=> string(3) "Foo" }
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9
array(3) { [0]=> string(3) "baz" [1]=> string(3) "bar" [2]=> string(3) "foo" }
preferences:
224.32 ms | 402 KiB | 366 Q