How to send a Guzzle request with a specific IP address in PHP?

To send a Guzzle request with a specific IP address in PHP, you can make use of cURL's CURLOPT_INTERFACE option. Guzzle internally uses cURL, so this option can be set within the Guzzle client configuration.

Here's an example:

use GuzzleHttp\Client;
use GuzzleHttp\HandlerStack;
use GuzzleHttp\Handler\CurlHandler;

// Set the desired IP address
$ipAddress = '192.168.1.100';

// Create a new Guzzle client with a custom cURL handler
$handler = new CurlHandler();
$client = new Client(['handler' => HandlerStack::create($handler)]);

// Set the CURLOPT_INTERFACE option to the desired IP address
$handler->curlOptions[CURLOPT_INTERFACE] = $ipAddress;

// Send a Guzzle request
$response = $client->get('https://example.com');

// Check the response
echo $response->getStatusCode();
echo $response->getBody();

In this example, we create a Guzzle client with a custom cURL handler that allows us to set additional cURL options. We set the CURLOPT_INTERFACE option in the cURL handler to the desired IP address. Finally, we send a Guzzle request, and you can handle the response according to your needs.