测试MD5的速度

0_test-md5-speed.php

<?php

$testRounds = 100;
$testTimes  = 1000000;

$times = [];

$data = 'abcdefgh';
for ($i = 0; $i < $testRounds; $i++){
    $begin = microtime(true);

    for ($j = 0; $j < $testTimes; $j++){
        $hash = md5($data);
    }

    $times[] = microtime(true) - $begin;
}

print_r([
    'rounds' => $testRounds,
    'times of a round' => $testTimes,
    'avg' => array_sum($times) / count($times),
    'max' => max($times),
    'min' => min($times),
]);

1_test-result.txt

[root@f4d5945f1d7c tools]# php speed-of-md5.php
Array
(
    [rounds] => 100
    [times of a round] => 1000000
    [avg] => 0.23415904045105
    [max] => 0.28906106948853
    [min] => 0.21188998222351
)