3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { public $bar; public $baz; } $a = new Foo(); $b = &$a; $a->bar = 42; $b->baz = 43; var_dump($a, $b);
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 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 - 8.1.31, 8.2.0 - 8.2.26, 8.3.0 - 8.3.15, 8.4.1 - 8.4.2
object(Foo)#1 (2) { ["bar"]=> int(42) ["baz"]=> int(43) } object(Foo)#1 (2) { ["bar"]=> int(42) ["baz"]=> int(43) }
preferences:
51.01 ms | 408 KiB | 5 Q