抖音担保支付 PHP demo附带详细解释

担保支付闭坑说明：

1、关于前端发起支付报错CD0015

//仔细检查下前端  order_id  order_token  格式，数据是由发布支付的接口回调得到的。
orderInfo: { // 订单信息
      order_id: config.order_id,
      order_token: config.order_token
}

2、关于后端，长常见就是发起支付有问题、回调有问题

这里的坑点是：仔细看开发手册你就发现抖音担保支付，发起支付跟回调签名算法不一样。

注意：发起支付签名加密是MD5、回调验证签名是SHA1加密

3、附PHP代码

（一）发起担保支付

/**
* 抖音担保支付 - 处理数据
* @param openId
* @paramout_order_no
* @param total_amount
* @param stringbody
* User: huweikeji
* Date: 2021/7/31 14:44
*/
public function DouyinPay(openId,out_order_no,total_amount,body = '抖音担保支付'){

    outOrderNo =out_order_no;//开发者侧的订单号
    totalAmount =total_amount;//支付价格; 接口中参数支付金额单位为[分]
    subject = "订单号：".out_order_no; //商品描述也就是标题
    body =body;
    validTimestamp = 60 * 60;//订单过期时间(秒);notifyUrl = "域名/tt_notify"; //这里可以忽略，走字节跳动小程序 -支付 -担保配置-设置回调地址
    //创建订单 
    response =this->createOrder(outOrderNo,totalAmount, subject,body, validTimestamp,notifyUrl);

    return response;

}
/**
*   创建订单
*/
public function CreateOrder(outOrderNo, totalAmount,subject, body,validTimestamp, notifyUrl)
{params = [
    'app_id'       => this->appid,
    'out_order_no' =>outOrderNo,
    'total_amount' => intval(totalAmount) * 100,
    'subject'      =>subject,
    'body'         => body,
    'valid_time'   =>validTimestamp,
    //'notify_url'   => notifyUrl,
    //'cp_extra' =>cpExtra,
    //'thirdparty_id' => thirdPartyId,
    //'disable_msg' =>disableMsg,
    //'msg_page' => msgPage,
    //'store_uid' =>storeUid
    ];

    params = array_filter(params);
    params['sign'] =this->getSign(params,this->payment['secret']);

    res =this->post(
    'https://developer.toutiao.com/api/apps/ecpay/v1/create_order',
    params
    );
    returnres;
}

（二）发起支付签名

/**
* 支付签名
* @param array body
* @param stringsecret
* @return string
* User: huweikeji
* Date: 2021/8/1 16:14
*/
public function getSign(array body, stringsecret)
{
    filtered = [];
    foreach (body as key =>value) {
    if (in_array(key, ['sign', 'app_id', 'thirdparty_id'])) {
    continue;
    }filtered[] =
    is_string(value)
    ? trim(value)
    : value;
    }filtered[] = trim(secret);
    sort(filtered, SORT_STRING);
    return md5(trim(implode('&', $filtered)));
}

（三）验证回调签名

// **************** 以下方法 是字节小程序支付 签名处理方式

public function getNotifySign(array body, stringsecret)
{
    filtered = [];
    foreach (body as key =>value) {
    if (in_array(key, ['msg_signature', 'type'])) {
    continue;
    }filtered[] =
    is_string(value)
    ? trim(value)
    : value;
    }filtered[] = trim(secret);
    sort(filtered, SORT_STRING);
    filtered = trim(implode('',filtered));

    return sha1($filtered);
}

（四）支付回调

public function notify()
{
    notify = \request()->param();

    if (notify['msg_signature'] !== this->getNotifySign(notify, this->payment['app_id'])) {
    Log::info('回调验证错误');
    } else {
    //获取订单信息order = json_decode(notify['msg'], true);
    //处理订单data = ['order_sn' => order['cp_orderno']];
    Log::info('抖音担保支付效验成功');
    }data = ['err_no' => '0', 'err_tips' => 'success'];
    return json($data);
}

（五）回调即CURL post提交

public function post(string url, arrayparams = [], array headers = [])
{headers[] = 'Content-type: application/json';

    ch = curl_init();
    curl_setopt(ch, CURLOPT_URL, url);
    curl_setopt(ch, CURLOPT_POST, true);
    curl_setopt(ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt(ch, CURLOPT_HTTPHEADER, headers);
    curl_setopt(ch, CURLOPT_POSTFIELDS, json_encode(params));
    curl_setopt(ch, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt(ch, CURLOPT_SSL_VERIFYHOST, false);output = curl_exec(ch);
    curl_close(ch);

    return json_decode($output, true);
}

以上就是抖音担保支付 PHP版本demo，代码中关于支付秘钥、订单数据格式等自行替换修改即可。

希望以上代码能够帮助你。😀