function genToken($length = 10) {


  $characters = 'abcdefghijkmnpqrstuvwxyzABCDEFGHJKLMNPRSTUVWXYZ_@!)(^%';


  $charactersLength = strlen($characters);


  $randomString = '';


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


      $randomString .= $characters[rand(0, $charactersLength - 1)];


  }


  return $randomString;


}