php/save.php

   1 <?php
   2
   3 function to_base($numstring, $frombase, $tobase) {
   4     $chars = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-_";
   5    $tostring = substr($chars, 0, $tobase);
   6
   7    $length = strlen($numstring);
   8    $result = '';
   9    for ($i = 0; $i < $length; $i++) {
  10        $number[$i] = strpos($chars, $numstring{$i});
  11    }
  12    do {
  13        $divide = 0;
  14        $newlen = 0;
  15        for ($i = 0; $i < $length; $i++) {
  16            $divide = $divide * $frombase + $number[$i];
  17            if ($divide >= $tobase) {
  18                $number[$newlen++] = (int)($divide / $tobase);
  19                $divide = $divide % $tobase;
  20            } elseif ($newlen > 0) {
  21                $number[$newlen++] = 0;
  22            }
  23        }
  24        $length = $newlen;
  25        $result = $tostring{$divide} . $result;
  26    }
  27    while ($newlen != 0);
  28    return $result;
  29 }
  30 $stamp = microtime(true) * (rand() / getrandmax()) * 100;
  31 $id = to_base((string)$stamp, 10, 62);
  32
  33 $sgf = $_POST['sgf'];
  34 if (get_magic_quotes_gpc()) $sgf = stripslashes($_POST['sgf']);
  35 if (strlen($sgf) > 30000) {
  36     // ~ 30 KB limit
  37     exit;
  38 }
  39 file_put_contents("../sgf/saved/$id.sgf", $sgf);
  40
  41 echo $id;
  42
  43 ?>