<?php

require __DIR__ . '/vendor/autoload.php';

use GuzzleHttp\Client;

$url = 'https://www.example.com';
$apiUri = '/api';
$uri = '/orders';
$queryParams = array(
    'ws_key' => 'SCLDNF2VST4U9YQI8CEMBA2SOW4L9QH9',
    'limit' => '1,3'
);

$client = new Client(array('base_uri' => $url));

$response = $client->request(
    'GET', 
    sprintf(
        '%s%s?%s',
        $apiUri,
        $uri,
        http_build_query($queryParams)
    )
);

echo (string)$response->getBody();