Php database connection error

            $email = filter_input(INPUT_POST,"email");
            $password = password_hash(filter_input(INPUT_POST, "password"), PASSWORD_DEFAULT);

            if(isset($_POST['signup'])){
                $con = new PDO('mysql:host=localhost; dbname=abc', 'root', '');
                $con->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
                $stmt = $con->prepare('INSERT INTO users VALUES (null, ?, ?)');
                $result = $stmt->execute(array($email, $password));
            }

            else{
                $con = new PDO('mysql:host=localhost; dbname=abc', 'root', '');
                $con->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

                //$dbp = "";

                $stmt = $con->prepare('SELECT password FROM users WHERE password=? AND email=?');
                $stmt->execute(array($password, $email));
                $result = $stmt->fetchAll();


                echo gettype($result);
                echo sizeof($result);

                if($result){
                    echo "Signed in, Welcome!";
                }
                else{
                    echo "Username or password problem, try again later";
                }