Laravel Simple Proxy Gateway with Guzzle

ProxyController.php

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use GuzzleHttp\Client;

class ProxyController extends Controller
{
    
    public function example_api($url='')
    {
        $https = 'http'; // http or https
        $domain = 'example-api.com'; // domain or subdomain that you want to proxy to
        
        // setup headers
        $client = new Client();
        $headers = collect(request()->headers->all())
            ->map(function ($item, $key) { return $item[0]; })
            ->all(); // this gets all headers sent to this request, and formats them as 'header-name' => 'value'
        $headers['host'] = $domain; // you can now overwrite any header
        
        // setup params
        $opts = [
            'http_errors' => false, // if this is true, will throw any error directly
            'verify' => false, // this skips any ssl verification. remove this if you need to verify an valid ssl
            'allow_redirects' => ['max' => 10], // only useful if the target has some redirects
            'timeout' => 10, // if you don't set a timeout limit, when the target api does not work, you will wait a long time to get http error
            'connect_timeout' => 10,
            'read_timeout' => 10,
            'headers' => $headers,
            'body' => json_encode(request()->all()), // this sends the same body that we get, to remote target in json format.
            // 'form_params' => request()->all(), // use form params instead of body, if server wants clasic form body
        ];
        
        // make request
        $response = $client->request(
            request()->method(),
            $https.'://'.$domain.'/'.$url,
            $opts
        );
        
        // read body and parse json
        $body = $response->getBody()->getContents();
        $body = json_decode($body, true); // remove this line if api is xml, or other format than json
        
        // log response and debug data // only for debugging. works great with laravel/telescope
        logger()->debug('PROXY Request '.request()->method().' '.$https.'://'.$domain.'/'.$url, [
            'request_opts' => $opts,
            'response_status_code' => $response->getStatusCode(),
            'response_headers' => $response->getHeaders(),
            'response_body' => $body,
        ]);
        
        // replicate the response with the same statuscode, headers and body
        return response($resbody, $response->getStatusCode())->withHeaders($response->getHeaders());
    }
}

web.php

<?php

// with this prefix you can have multiple proxys for multiple apis
Route::any('/example-api/{url?}', 'ProxyController@example_api')->where('url', '.*');

// now any request to https://your-laravel-site.com/example-api/api/v1/offers will proxy to http://example-api.com/api/v1/offers (example usecase)