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run code in 300+ PHP versions simultaneously
<?php function cmp($a, $b) { if ($a == $b) { return 0; } echo $b."mukesh"; return ($a < $b) ? -1 : 1; } $a = array(3, 2, 5, 6, 1); usort($a, "cmp"); foreach ($a as $key => $value) { echo "$key: $value\n"; }

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42.64 ms | 402 KiB | 5 Q