/**
* execute - Makes the request to Facebook and returns the result.
*
* @return FacebookResponse
*
* @throws FacebookSDKException
* @throws FacebookRequestException
*/
public function execute()
{
$url = $this->getRequestURL();
$params = $this->getParameters();
if ($this->method === 'GET') {
$url = self::appendParamsToUrl($url, $params);
$params = array();
}
$connection = self::getHttpClientHandler();
$connection->addRequestHeader('User-Agent', 'fb-php-' . self::VERSION);
$connection->addRequestHeader('Accept-Encoding', '*');
// Support all available encodings.
// ETag
if (null !== $this->etag) {
$connection->addRequestHeader('If-None-Match', $this->etag);
}
// Should throw `FacebookSDKException` exception on HTTP client error.
// Don't catch to allow it to bubble up.
$result = $connection->send($url, $this->method, $params);
static::$requestCount++;
$etagHit = 304 === $connection->getResponseHttpStatusCode();
$headers = $connection->getResponseHeaders();
$etagReceived = isset($headers['ETag']) ? $headers['ETag'] : null;
$decodedResult = json_decode($result);
if ($decodedResult === null) {
$out = array();
parse_str($result, $out);
return new FacebookResponse($this, $out, $result, $etagHit, $etagReceived);
}
if (isset($decodedResult->error)) {
throw FacebookRequestException::create($result, $decodedResult->error, $connection->getResponseHttpStatusCode());
}
return new FacebookResponse($this, $decodedResult, $result, $etagHit, $etagReceived);
}
/**
* Request a code from a long lived access token.
*
* @param array $params
* @param string|null $appId
* @param string|null $appSecret
*
* @return string
*
* @throws FacebookRequestException
*/
public static function requestCode(array $params, $appId = null, $appSecret = null)
{
$response = static::request('/oauth/client_code', $params, $appId, $appSecret);
$data = $response->getResponse();
if (isset($data->code)) {
return (string) $data->code;
}
throw FacebookRequestException::create($response->getRawResponse(), $data, 401);
}