3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { public $foo; } $message = "boom"; $f = new Foo(); $f->foo = &$f; $f2 = clone $f; $f->foo = "chakalaka"; echo $f2->foo;
Output for 5.2.0, 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
chakalaka

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61.35 ms | 844 KiB | 4 Q