Online PHP editor | refs for 46ZPj

<?php $rand = []; $randKeys = []; $max = 1000; for ($i = 0; $i < $max; $i++) { $v = bin2hex(random_bytes(10)); $rand[] = $v; $randKeys[$v] = $v; } // $max = 1000; $start = microtime(true); for ($i = 0; $i < $max; $i++) { $keys = []; for ($j = 0; $j < $max; $j++) { $keys[] = $rand[$j]; } } printf("Took %.7f seconds per execution\n", (microtime(true) - $start) / $max); // $max = 1000; $start = microtime(true); for ($i = 0; $i < $max; $i++) { $keys = array_keys($randKeys); } printf("Took %.7f seconds per execution\n", (microtime(true) - $start) / $max);