Fastest hash for non-cryptographic uses?

Question

I\'m essentially preparing phrases to be put into the database, they may be malformed so I want to store a short hash of them instead (I will be simply comparing if they exi

Answer 1

The implementation for md5 inside hash is a little bit faster than md5(). So this can be an option or some else, please try:

echo '<pre>';

$run = array();

function test($algo)
{
  #static $c = 0;
  #if($c>10) return;
  #$c++;

 $tss = microtime(true);
 for($i=0; $i<100000; $i++){
  $x = hash($algo, "ana are mere");
 }
 $tse = microtime(true);

 $GLOBALS['run'][(string)round($tse-$tss, 5)] = "\nhash({$algo}): \t".round($tse-$tss, 5) . " \t" . $x;
 #echo "\n$i nhash({$algo}): \t".round($tse-$tss, 5) . " \t" . $x;
}
array_map('test', hash_algos());
ksort($run);
print_r($run);
echo '</pre>';

You can see at http://www.dozent.net/Tipps-Tricks/PHP/hash-performance