Another comprehensive benchmark script that orders results from best to worst and includes the crc32(), md5() and sha1() standalone functions:
<?php
define('HASH_TIMES', 1000);
define('HASH_DATA', 'The quick brown fox jumped over!'); header('Content-Type: text/plain');
echo 'Testing ' . strlen(HASH_DATA) . ' bytes of data over ' . HASH_TIMES . " iterations:\n";
foreach (hash_algos() as $algo) {
$time = microtime(1);
for ($i = 0; $i < HASH_TIMES; $i++) hash($algo, HASH_DATA);
$results[$algo] = microtime(1) - $time;
}
$time = microtime(1); for ($i = 0; $i < HASH_TIMES; $i++) crc32(HASH_DATA); $results['crc32()'] = microtime(1) - $time;
$time = microtime(1); for ($i = 0; $i < HASH_TIMES; $i++) md5(HASH_DATA); $results['md5()'] = microtime(1) - $time;
$time = microtime(1); for ($i = 0; $i < HASH_TIMES; $i++) sha1(HASH_DATA); $results['sha1()'] = microtime(1) - $time;
asort($results, SORT_NUMERIC);
foreach ($results as $algo => $time) echo "\n$time\t$algo";
?>
