How to set a proxy server for Guzzle requests in PHP?

To set a proxy server for Guzzle requests in PHP, you can use the request_options parameter when making a Guzzle HTTP request. Here's a step-by-step guide:

Install Guzzle using Composer if you haven't already:

composer require guzzlehttp/guzzle

Include the Guzzle namespace in your PHP file:

use GuzzleHttp\Client;

Create a new instance of the Guzzle client:

$client = new Client();

Define the proxy server details:

$proxy = [
    'http'  => 'tcp://proxy.example.com:3128',   // Replace with your proxy server URL and port
    'https' => 'tcp://proxy.example.com:3128'    // Replace with your proxy server URL and port
];

Pass the proxy server details in the request_options parameter when making the Guzzle request:

$response = $client->request('GET', 'https://api.example.com', [
    'proxy' => $proxy
]);

Now, Guzzle will send the request through the specified proxy server. Make sure to replace 'https://api.example.com' with the actual URL you want to make the request to.

Note: Guzzle supports multiple proxy types (HTTP, SOCKS4, SOCKS4a, and SOCKS5) based on the proxy URL scheme. Adjust the proxy URL accordingly based on your proxy server type.