public static function generateRandomString($length = 10)
{
$characters = '123456789ABCDEFGHIJKLMNPQRSTUVWXYZ';
$charactersLength = strlen($characters);
$randomString = '';
for ($i = 0; $i < $length; $i++) {
$randomString .= $characters[rand(0, $charactersLength - 1)];
}
return $randomString;
}