private function __construct()
 {
     try {
         $this->dbh = new PDO(DATABASE . ":host=" . DB_SERVER . ";dbname=" . DB_NAME, DB_USER, DB_PASS);
         $this->dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
         Eloquent::getInstance();
     } catch (PDOException $e) {
         echo $e->getMessage();
     }
 }
 function __construct()
 {
     Eloquent::getInstance();
 }