<pre>
<?php

function microtime_float() {
    list($usec, $sec) = explode(" ", microtime());
    return ((float)$usec + (float)$sec);
}
$algos = hash_algos();
$string = "The quick brown fox jumped over the lazy dog.";


echo "Prints out hash of the string \"".$string."\"\nusing the different algorithms you have installed in your PHP setup.\n";
echo "It runs the hash function 1000 times and calculates the mean value of the execution time.\n";
echo "The execution time is presented in milliseconds\n\n";

foreach($algos as $algo) {

  echo $algo . "\n";
  echo hash($algo, $string) . "\n";
  $res_time = 0;
  for($i = 0; $i < 1000;$i++) {
    $time_start = microtime_float();
    hash($algo, $string);
    $res_time += microtime_float() - $time_start;
  }

  echo "Executed in " . round($res_time*1000, 3) . " milliseconds\n";
  echo "\n\n";
}
?>
</pre>