class Authorization {
	private $_query;
	private $array=array();
	private $_mysqli;
	public static $_singleton;
 const DB_NAME="users";
 const DB="localhost";
 const DB_PASSWORD="";
 const DB_USER="root";


public function   __construct(){
$this->_mysqli=new mysqli(self::DB,self::DB_USER,self::DB_PASSWORD,self::DB_NAME);
if(mysqli_connect_errno()){
                  throw new Exception('There is some error while connection.');
              }
}
final private function __clone(){}

public static function getInstance(){
	if(!isset(self::$_singleton)){
		self::$_singleton= new Authorization();
	}else{
		return self::$_singleton;
	}
}
public function query($sql){
	if($this->_query=$this->_mysqli->query($sql)){
		while($row=$this->_query->fetch_object()){
$this->array[]=$row;
		}
	}
	return $this;
	}
	public function getArray(){
		return $this->array;
	}



}
print_r(Authorization::getInstance()->query("INSERT INTO authorization VALUES('jack','123123','1313231')")->getArray());


?>