$handler
$handler : callable
Creates a composed Guzzle handler function by stacking middlewares on top of an HTTP handler function.
create(callable $handler = null) : \GuzzleHttp\HandlerStack
Creates a default handler stack that can be used by clients.
The returned handler will wrap the provided handler or use the most appropriate default handler for your system. The returned HandlerStack has support for cookies, redirects, HTTP error exceptions, and preparing a body before sending.
The returned handler stack can be passed to a client in the "handler" option.
callable | $handler | HTTP handler function to use with the stack. If no handler is provided, the best handler for your system will be utilized. |
__invoke(\Psr\Http\Message\RequestInterface $request, array $options)
Invokes the handler stack as a composed handler
\Psr\Http\Message\RequestInterface | $request | |
array | $options |