Hey guys I am pretty new to pdo so I basically just put together a simple connection class using information out of the introductory book I was reading but is this connection efficient? If anyone has any informative suggestions, I would really appreciate it.

class PDOConnectionFactory{

    public $con = null;
    // swich database?
    public $dbType  = "mysql";

    // connection parameters

    public $host    = "localhost";
    public $user    = "user";
    public $senha   = "password";
    public $db  = "database";


    public $persistent = false;

    // new PDOConnectionFactory( true ) <--- persistent connection
    // new PDOConnectionFactory()       <--- no persistent connection
    public function PDOConnectionFactory( $persistent=false ){
        // it verifies the persistence of the connection
        if( $persistent != false){ $this->persistent = true; }
    }

    public function getConnection(){
            try{
                $this->con = new PDO($this->dbType.":host=".$this->host.";dbname=".$this->db, $this->user, $this->senha, 
                array( PDO::ATTR_PERSISTENT => $this->persistent ) );
                // carried through successfully, it returns connected
                return $this->con;
            // in case that an error occurs, it returns the error;
            }catch ( PDOException $ex ){  echo "We are currently experiencing technical difficulties. We have a bunch of monkies working really hard to fix the problem. Check back soon: ".$ex->getMessage(); }

    }

    // close connection
    public function Close(){
        if( $this->con != null )
            $this->con = null;
    }

}