Generate random string of certain length

function genRandomString()

{

$length = 10;

$characters = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";

$string = null;

for ($p = 0; $p < $length; $p++) {

$string .= $characters[mt_rand(0, strlen($characters))];

}

return $string;

}

$x=genRandomString();

echo substr($x,0,6);

?>