PayPalHttp is a generic HTTP Client.
In it's simplest form, an HttpClient
exposes an execute
method which takes an HTTP request, executes it against the domain described in an Environment, and returns an HTTP response.
An Environment
describes a domain that hosts a REST API, against which an HttpClient
will make requests. Environment
is a simple interface that wraps one method, baseUrl
.
$env = new Environment('https://example.com');
HTTP requests contain all the information needed to make an HTTP request against the REST API. Specifically, one request describes a path, a verb, any path/query/form parameters, headers, attached files for upload, and body data.
HTTP responses contain information returned by a server in response to a request as described above. They are simple objects which contain a status code, headers, and any data returned by the server.
$request = new HttpRequest("/path", "GET");
$request->body[] = "some data";
$response = $client->execute($req);
$statusCode = $response->statusCode;
$headers = $response->headers;
$data = $response->result;
Injectors are blocks that can be used for executing arbitrary pre-flight logic, such as modifying a request or logging data. Injectors are attached to an HttpClient
using the addInjector
method.
The HttpClient
executes its injectors in a first-in, first-out order, before each request.
class LogInjector implements Injector
{
public function inject($httpRequest)
{
// Do some logging here
}
}
$logInjector = new LogInjector();
$client = new HttpClient($environment);
$client->addInjector($logInjector);
...
HttpClient#execute
may throw an Exception
if something went wrong during the course of execution. If the server returned a non-200 response, IOException will be thrown, that will contain a status code and headers you can use for debugging.
try
{
$client->execute($req);
}
catch (HttpException $e)
{
$statusCode = $e->response->statusCode;
$headers = $e->response->headers;
$body = $e->response->result;
}
PayPalHttp-PHP is open source and available under the MIT license. See the LICENSE file for more information.
Pull requests and issues are welcome. Please see CONTRIBUTING.md for more details.