1 <?php
2
3
4
5 public function genToken($len = 32, $md5 = true) {
6 # Seed random number generator
7 # Only needed for PHP versions prior to 4.2
8 mt_srand((double) microtime() * 1000000);
9 # Array of characters, adjust as desired
10 $chars = array(
11 'Q', '@', '8', 'y', '%', '^', '5', 'Z', '(', 'G', '_', 'O', '`',
12 'S', '-', 'N', '<', 'D', '{', '}', '[', ']', 'h', ';', 'W', '.',
13 '/', '|', ':', '1', 'E', 'L', '4', '&', '6', '7', '#', '9', 'a',
14 'A', 'b', 'B', '~', 'C', 'd', '>', 'e', '2', 'f', 'P', 'g', ')',
15 '?', 'H', 'i', 'X', 'U', 'J', 'k', 'r', 'l', '3', 't', 'M', 'n',
16 '=', 'o', '+', 'p', 'F', 'q', '!', 'K', 'R', 's', 'c', 'm', 'T',
17 'v', 'j', 'u', 'V', 'w', ',', 'x', 'I', '$', 'Y', 'z', '*'
18 );
19 # Array indice friendly number of chars;
20 $numChars = count($chars) - 1;
21 $token = '';
22 # Create random token at the specified length
23 for ($i = 0; $i < $len; $i++)
24 $token .= $chars[mt_rand(0, $numChars)];
25 # Should token be run through md5?
26 if ($md5) {
27 # Number of 32 char chunks
28 $chunks = ceil(strlen($token) / 32);
29 $md5token = '';
30 # Run each chunk through md5
31 for ($i = 1; $i <= $chunks; $i++)
32 $md5token .= md5(substr($token, $i * 32 - 32, 32));
33 # Trim the token
34 $token = substr($md5token, 0, $len);
35 }
36
37 return $token;
38 }
39
