<?php $array = array_fill(0, 20000, 0); $time = microtime(true); for ($i = 0; $i <= 100000; $i++) { array_merge($array); } var_dump(microtime(true) - $time); $time = microtime(true); for ($i = 0; $i <= 100000; $i++) { array_values($array); } var_dump(microtime(true) - $time);
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