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run code in 300+ PHP versions simultaneously
<?php class Foo { public $prop = 0; public function &getPropRef () { return $this->prop; } } $obj = new Foo(); $variable = &$obj->getPropRef(); $variable = 1; $variable = 2; $variable = 3; echo $obj->prop;
Output for 5.0.0, 8.1.27 - 8.1.33, 8.2.14 - 8.2.29, 8.3.1 - 8.3.25, 8.4.1 - 8.4.12
3

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57.06 ms | 406 KiB | 5 Q