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run code in 300+ PHP versions simultaneously
<?php $result = []; foreach(hash_algos() as $algo) { $start = microtime(true); $i = 1e5; while (--$i) { hash($algo, $i); } $result[$algo] = microtime(true) - $start; } asort($result); var_dump($result);

preferences:
29.96 ms | 402 KiB | 5 Q