guzzle 使用 json 作为主体请求接口

http请求方式: POST
https://api.weixin.qq.com/cgi-bin/material/batchget_material?access_token=ACCESS_TOKEN

#参数
{
    "type":TYPE,
    "offset":OFFSET,
    "count":COUNT
}

$client = new Client();
$response = $client->post("https://api.weixin.qq.com/cgi-bin/material/batchget_material?access_token=$token", [
          'form_params' => [
              "type"=>"news",
              "offset"=>0,
              "count"=>10
          ]
      ]);

$client = new Client();
$response = $client->post("https://api.weixin.qq.com/cgi-bin/material/batchget_material?access_token=$token", [
          'form_params' =>json_encode([
              "type"=>"news",
              "offset"=>0,
              "count"=>10
          ])
      ]);

$client = new Client();
$response = $client->post("https://api.weixin.qq.com/cgi-bin/material/batchget_material?access_token=$token", [
          'json' => [
              "type"=>"news",
              "offset"=>0,
              "count"=>10
          ]
      ]);