define('BASEPATH',true);

 require 'application/config/database.php';
 
 Class DataBase
 {
    public $DBConnectObject = null;
    
    function __construct( $db )
    {
        $this->connect( $db );
    }
    
    function connect( $db )
    {
        $this->DBConnectObject = @new mysqli($db['default']['hostname'],$db['default']['username'],$db['default']['password'],$db['default']['database']);
        
            if(mysqli_connect_errno( ))
            {
                print 'Error to connect DataBase';
                exit;
            }
    }
    
    function query( $sql = '' )
    {
        return $this->DBConnectObject->query( $sql );
    }
    
    function affected_rows( )
    {    
        return $this->DBConnectObject->affected_rows;
    }
    
    function insert_id( )
    {
        return $this->DBConnectObject->insert_id;
    }
    

    

 }
 
 $db = new DataBase($db);
 $check = $db->query("SELECT * example_table");
 print_r($check->fetch_all(1));