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How to read and send cookies using Guzzle

When using Guzzle to do web crawling/scraping. Handling cookies is a common challenge.

As we all know, an HTTP cookie (web cookie, browser cookie) is a small piece of data that a server sends to a user's web browser. The browser may store the cookie and send it back to the same server with later requests. This is typically used by a website to identify a user.

When crawling a website, we need to properly handle the cookie so that we can get the correct response.

Read cookies

To retrieve cookies from Guzzle is pretty straightforward, you simply call the getConfig('cookies') method:

$client = new \GuzzleHttp\Client(['cookies' => true]);
$r = $client->request('GET', '');

$cookieJar = $client->getConfig('cookies');

Send cookies

To send cookies with your request, you need to pass a cookie jar to the request:

Please note the cookies option must be set to an instance of GuzzleHttp\Cookie\CookieJarInterface.

The end

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