hphp/test/zend/bad/ext-standard-strings/004.php

   1 <?php
   2 function stats($f, $a) {
   3     $times = 90000;
   4     print "$f\n";
   5     ksort($a);
   6     foreach($a as $k => $v)
   7         print "$k: $v: " . sprintf('%0.3f', $v / $times) . "\n";
   8 }
   9 $a = array();
  10 $times = 90000;
  11 for ($i = 0; $i < $times; $i++) {
  12     $p = range(1,4);
  13     shuffle($p);
  14     $s = join('', $p);
  15     if (empty($a[$s])) $a[$s] = 0;
  16     $a[$s]++;
  17 }
  18
  19 stats('shuffle', $a);
  20 $a = array();
  21 $times = 90000;
  22 for ($i = 0; $i < $times; $i++) {
  23     $p = '1234';
  24     $s = str_shuffle($p);
  25     if (empty($a[$s])) $a[$s] = 0;
  26     $a[$s]++;
  27 }
  28
  29 stats('str_shuffle', $a);
  30 ?>