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run code in 300+ PHP versions simultaneously
<?php function a(array ...$a) { return array_merge($a, $a); } $a = [1, 2, 3]; $b = 4; $c = a($a, $b); // $c = [1, 2, 3, 4] var_dump($c);

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62.12 ms | 402 KiB | 5 Q