3v4l.org

run code in 300+ PHP versions simultaneously
<?php $foo = ["a", "b", "c"]; foreach ($foo as &$bar) { $bar = 1; } var_dump($foo); $bar = 2; var_dump($foo); unset($bar); $bar = 3; var_dump($foo);

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45.11 ms | 402 KiB | 5 Q