crc32_md5_sha1_bench.php

<?php

$string = uniqid();

$start = microtime(true);
	for ($i = 0; $i < 1000000; $i++) {
		crc32($string);
	}
$elapsed = microtime(true) - $start;
echo "crc32 => $elapsed\n";


$start = microtime(true);
	for ($i = 0; $i < 1000000; $i++) {
		md5($string);
	}
$elapsed = microtime(true) - $start;
echo "md5 => $elapsed\n";


$start = microtime(true);
	for ($i = 0; $i < 1000000; $i++) {
		sha1($string);
	}
$elapsed = microtime(true) - $start;
echo "sha1 => $elapsed\n";

/**
 * A note for benchmark vampires:
 *
 * For the love of God, don't compare PHP versions to each other.
 * Yes, benchmarks such, but within a single sample set on any
 * machine, you can test the speed of each of these operations
 * against each other. Its not designed or intended to compare
 * the speed between PHP versions.
 */

/**
 * Result
 * --------------------
 * PHP v5.3.0
 *
 * crc32 => 0.30762314796448
 * md5 => 0.93620681762695
 * sha1 => 0.8613178730011
 */

/**
 * Result
 * --------------------
 * PHP v5.2.13
 *
 * crc32 => 0.295562982559
 * md5 => 0.840898990631
 * sha1 => 0.810412883759
 */