note 77174 deleted from function.rand by felipe

Note Submitter: jfkallen at hotmail dot com 

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In regards to mno2go's note below on randomly generated strings, I am not sure what's inefficient about this.  I like it and am using it in several modules (so thanks).  I made a few tweaks though.  There is a fence-post error in the code (a string's range is 0 to n-1).  There is also excessive calls to strlen.

<?php
    function generateCode($length=6) {
        $chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPRQSTUVWXYZ0123456789";
        $code = "";
        $clen = strlen($chars) - 1;  //a variable with the fixed length of chars correct for the fence post issue
        while (strlen($code) < $length) {
            $code .= $chars[mt_rand(0,$clen)];  //mt_rand's range is inclusive - this is why we need 0 to n-1
        }
        return $code;
    }
?>