PHP Function to generate random unique string.

Here is a Simple Function to generate random unique string.

            function GenerateNumber($min, $max)

{

                        // Create the meta-password

                        $sMetaPassword = "";

                        global $CONFIG;

                        $ahPasswordGenerator = array(

                        "C" => array('characters' => 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ', 'minimum' => $min, 'maximum' => $max),

//"S" => array('characters' => "!@()-_=+?*^&", 'minimum' => 2, 'maximum' => 2

"N" => array('characters' => '1234567890', 'minimum' => $min, 'maximum' => $max)

);

                        foreach ($ahPasswordGenerator as $cToken => $ahPasswordSeed)

$sMetaPassword .= str_repeat($cToken, rand($ahPasswordSeed['minimum'], $ahPasswordSeed['maximum']));

                                    $sMetaPassword = str_shuffle($sMetaPassword);

                        // Create the real password

                        $arBuffer = array();

                        for ($i = 0; $i < strlen($sMetaPassword); $i ++)

$arBuffer[] = $ahPasswordGenerator[(string)$sMetaPassword[$i]]['characters'][rand(0, strlen($ahPasswordGenerator[$sMetaPassword[$i]]['characters']) - 1)];

                        return implode("", $arBuffer);

}