3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { public $items = [1,2,3]; function getItems() { return $this->items; } } $foo = new Foo(); foreach($foo->getItems() as &$item) { echo $item, PHP_EOL; $item = '-1'; } var_dump($foo->getItems());

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42.42 ms | 402 KiB | 5 Q