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 immutable-date

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<?php

/* $Id$ */

/*

This gives rather interesting results :)

Measures on a Notebook P4M-1.7 256MB Windows 2000:

sha1 0.556691

tiger160,3 0.774469

tiger192,3 0.776314

tiger128,3 0.777004

ripemd128 0.896674

sha256 1.011164

md5 1.016032

tiger160,4 1.056617

tiger128,4 1.063101

tiger192,4 1.069258

haval160,3 1.125099

haval128,3 1.125679

haval224,3 1.128017

haval192,3 1.130026

haval256,3 1.134846

ripemd160 1.150693

haval128,4 1.686261

haval192,4 1.687274

haval160,4 1.693091

haval256,4 1.699323

haval224,4 1.743094

haval160,5 2.003452

haval192,5 2.008341

haval256,5 2.009048

haval128,5 2.009555

haval224,5 2.015539

sha384 3.370734

sha512 3.381121

whirlpool 6.912327

snefru 9.268168

Measures on a Desktop P4-2.4 512MB Debian (Linux-2.4):

md5 0.147739

haval128,3 0.317006

haval192,3 0.317524

haval256,3 0.317526

haval160,3 0.323035

haval224,3 0.333318

ripemd128 0.353447

sha1 0.376200

ripemd160 0.413758

sha256 0.435957

haval160,4 0.452357

haval224,4 0.454531

haval128,4 0.458026

haval256,4 0.459051

haval192,4 0.468094

haval128,5 0.524262

haval160,5 0.529573

haval224,5 0.533655

haval256,5 0.534446

haval192,5 0.543726

tiger128,3 0.577975

tiger160,3 0.579951

tiger192,3 0.597111

tiger192,4 0.781408

tiger160,4 0.801243

tiger128,4 0.812239

sha512 1.298627

sha384 1.313607

whirlpool 1.556159

snefru 5.703742

*/

error_reporting(E_ALL&~E_NOTICE);

$data = file_get_contents(__FILE__);

$time = array();

for ($j = 0; $j < 10; $j++) {

foreach (hash_algos() as $algo) {

$start = microtime(true);

for ($i = 0; $i < 1000; $i++) {

hash($algo, $data);

}

$time[$algo] += microtime(true)-$start;

}

}

asort($time, SORT_NUMERIC);

foreach ($time as $a => $t) {

printf("%-12s %02.6f\n", $a, $t);

}

?>