3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = [1 => 3, 2 => 1, 4 => 1]; $b = [1 => 1, 2 => 2, 3 => 1]; var_dump(array_replace($a, $b));

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87.54 ms | 402 KiB | 5 Q