gistfile1.txt

$response = new Phalcon\Http\Response();
// $recordがexecuteQueryメソッドの戻り値
if ($record === false) {
    $response->setStatusCode(404);　
    $response->setJsonContent(
        [
            'status' => 'NOT-FOUND'
        ]
    );
} else {
    $response->setStatusCode(200);
    $response->setJsonContent(
        [
            'status' => 'FOUND',
            'data'   => [
                'id'   => $record[0]->id,
                'firstname' => $record[0]->firstname,
                'lastname' => $record[0]->lastname,
                'age' => $record[0]->age
            ]
        ]
    );
}
return $response;