使用php laravel connect到Bitunix REST API 我正在尝试连接到Bitunix API并使用PHP更改边距模式。我遵循其网站上提供的文档，但不断遇到签名错误消息。 我尝试了

Question

there是我的API类代码的片段，参考：

<?php

namespace App\Classes\Api;

use GuzzleHttp\Client;


class BitunixFuturesApi{
    public string $base_url = "https://fapi.bitunix.com/";
    public string $klineE = "api/v1/futures/market/kline";
    public string $marginModeE = "api/v1/futures/account/change_margin_mode";
    public string $apiKey = "random";
    public string $secretKey = "random";


    public function set_margin_mode($symbol="BTCUSDT", $marginMode = "ISOLATED", $marginCoin = "USDT"):array{
        try{
            $client = new Client();

            $params = [
                "marginMode" => $marginMode,
                "symbol" => $symbol,
                "marginCoin" => $marginCoin
            ];
            $apiKey = $this->apiKey;
            $secretKey = $this->secretKey;
            $nonce = bin2hex(random_bytes(16));

            $queryParamsString = '';
            ksort($params);

            foreach ($params as $key => $value) {
                $queryParamsString .= $key . $value;
            }
            $body = json_encode($params);

            $timestamp = (int)(microtime(true)*1000);

            $digest = hash('sha256' , $nonce.$timestamp.$apiKey.$queryParamsString.$body);

            $sign = hash('sha256', $digest.$secretKey);


            $response = $client->post($this->base_url.$this->marginModeE,[
                'headers'=>[
                    'api-key' => $apiKey,
                    'sign' =>$sign,
                    'timestamp' => $timestamp,
                    'nonce'=>$nonce,
                    'Content-Type'=> 'application/json'
                ],
                'json'=>$params
            ]);

            $response = json_decode($response->getBody()->getContents(),false,512,JSON_THROW_ON_ERROR);


            if($response->code ==0){
                return ['success'=>true, 'message'=>"Margin mode changed successfully", 'data' => $response->data];
            }
            return ['success'=>false, 'message'=>"Error changing margin mode", 'data' => $response->msg, 'code'=>$response->code];

        }catch(\Exception $e){
            return ['success'=>false, 'message'=>$e->getMessage(),'line'=>$e->getLine(),'file'=>$e->getFile(), 'data' => ''];
        }
    }


}

there是我的代码的片段以供控制器参考：

<?php

namespace App\Http\Controllers\Dashboard;

use App\Classes\Api\BitunixFuturesApi;
use App\Http\Controllers\Controller;
use Illuminate\Http\Request;

class TradeController extends Controller
{
    public function __construct(){
        $this->middleware('auth');
    }

    public function index(){

        $bit = new BitunixFuturesApi();

        $data = $bit->set_margin_mode("BTCUSDT", "CROSS");

        return view('dashboard.trade')->with('data',$data);

    }
}

这是我的错误：

我不知道您是否有工作。经过大量测试，看来代码中唯一的问题是时间戳。使用日期（'ymdhisz'）看起来像$ nonce这样的外观可以是任何随机字符串。长度似乎并不重要。我使用了具有各种随机长度的简单随机alpha-numeric String生成器。所有人都起作用