Laravel and Angular Token Auth JWT issue

im using this code to make an angular and laravel token based auth.

i trying to all multiple column login, eg email, phone and userid, though it was working ok but after playing around a bit i notice that if the user does not exist it would log them in as the first user from the DB.

here is the code

    $email = $request->only('email', 'password');
    $ssn = $request->only('ssn', 'password');
    $badgenumber = $request->only('badgenumber', 'password');
    $ophone = $request->only('ophone', 'password');
    $fphone = $request->only('fphone', 'password');
    $pager = $request->only('pager', 'password');
    $error = 0;

    try {
        // verify the $email and create a token for the user
        if (!$token = JWTAuth::attempt($email)) {
            $error = 1;
        }
        if ($error == 1) {
            $error = 0;
            if (!$token = JWTAuth::attempt($ssn)) {
                $error = 1;
            }
        }
        if ($error == 1) {
            $error = 0;
            if (!$token = JWTAuth::attempt($badgenumber)) {
                $error = 1;
            }
        }
        if ($error == 1) {
            $error = 0;
            if (!$token = JWTAuth::attempt($ophone)) {
                $error = 1;
            }
        }
        if ($error == 1) {
            $error = 0;
            if (!$token = JWTAuth::attempt($fphone)) {
                $error = 1;
            }
        }
        if ($error == 1) {
            $error = 0;
            if (!$token = JWTAuth::attempt($pager)) {
                $error = 1;
            }
        }

        if($error == 1){
            return response()->json(['error' => 'invalid_credentials'], 401);
        }

    } catch (JWTException $e) {
        // something went wrong
        return response()->json(['error' => 'could_not_create_token'], 500);
    }

    // if no errors are encountered we can return a JWT
    return response()->json(compact('token'));
}

via Chebli Mohamed