<?php $value = base64_encode(md5('')); $start = microtime(true); for ($i = 0; $i < 100; ++$i) { $result = [$value]; while ('' !== $value) { $result[] = $value = substr($value, 0, -1); } $result = array_reverse($result); } $end = microtime(true); echo $i/($end - $start), ' op/s'; var_dump($result);
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