randomstring.php

<?php


/**
* genRedeemCode($length)
*
* Returns a random $length (default 7)
* characters to use a code for user to redeem a badge
*
*/
function genRedeemCode($length = 7)
{
    $redeemer ="";
    for($x=0;$x <= $length;$x++){
        // as of php 4.3.x you dont need to seed randomizer. WOOT!
        $modo = rand() % 3;
        switch ($modo)
        {
            case '0':
                    $code =genRandomNumber();
            break;
            case '1':
                    $code = genRandomCapital();
                    
            break;
            case '2':
                    $code = genRandomLower();
                   
            break;
                                   
            default:
                    # code...
            break;
       }
       $redeemer .=$code;
       
    }
    return $redeemer;
}

/**
* genRandomNumber
*
* called from genRedeemCode, returns a random number based on ascii
*/
function genRandomNumber()
{
        $randomascii = rand(48,57);
        return chr($randomascii);
}

/**
* genRandomCapital
*
* called from genRedeemCode, returns a random capital letter
*/
function genRandomCapital()
{
        $randomascii = rand(65,90);
        return chr($randomascii);
}

/**
* genRandomLower
*
* called from genRedeemCode, returns a random lowercase letter
*/
function genRandomLower()
{
        $randomascii = rand(97,122);
        return chr($randomascii);
}
?>