StringBuilder()

<?php
/***
 * Created by Adil && Dominic (Myrax)
 * Used to generate a random SSO ticket
 * @author 'Adil'
 * October 16th 2011
 */
function adilsRandomString() {//calls the function
    $alphanumerics = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';//declares our chars and ints
  $result = 'user';//username here
    for ($x = 0; $x < 32; $x++) {//keeping the character length to 32, change the 32 to vary lengths
        $result .= $alphanumerics [mt_rand(0, strlen($alphanumerics))];//$result+string
    }
   return $result;//returns the result, without this, we won't recieve the result
}
echo adilsRandomString();//shows the SSO ticket
?>