Enterprise payment for small program development

The purpose of writing this article is mainly because the SDK provided by the WeChat public platform does not provide an SDK implementation for this function.

In fact, the final implementation was achieved with the help of WeChat Public platform development documents and SDK.

Application scenarios of enterprise payment: Official account pays users who have followed it, such as processing refunds, financial settlements, etc.

Let’s talk about the implementation first Idea:

Expand the WxMchPay component on the basis of the class library that comes with the SDK to realize the expansion of enterprise payment functions.

Without further ado, let’s talk about the code. The following is the component that inherits SDK to implement corporate payment:

$ parameters parameter reference: Documentation of Enterprise PaymentAPI

<?php// 引入SDKimport(&#39;Common.Util.WxPay&#39;);/**
 * 微信企业付款操作类
 * Author  :  Max.wen
 * DateTime: <15/9/16 11:00> */class WxMchPay extends Wxpay_client_pub
{    /**
     * API 参数
     * @var array
     * &#39;mch_appid&#39;         # 公众号APPID
     * &#39;mchid&#39;             # 商户号
     * &#39;device_info&#39;       # 设备号
     * &#39;nonce_str&#39;         # 随机字符串
     * &#39;partner_trade_no&#39;  # 商户订单号
     * &#39;openid&#39;            # 收款用户openid
     * &#39;check_name&#39;        # 校验用户姓名选项 针对实名认证的用户
     * &#39;re_user_name&#39;      # 收款用户姓名
     * &#39;amount&#39;            # 付款金额
     * &#39;desc&#39;              # 企业付款描述信息
     * &#39;spbill_create_ip&#39;  # Ip地址
     * &#39;sign&#39;              # 签名     */
    public $parameters = [];    public function construct()
    {        $this->url = &#39;https://api.mch.weixin.qq.com/mmpaymkttransfers/promotion/transfers&#39;;        $this->curl_timeout = WxPayConf_pub::CURL_TIMEOUT;
    }    /**
     * 生成请求xml数据
     * @return string     */
    public function createXml()
    {        $this->parameters[&#39;mch_appid&#39;] = WxPayConf_pub::APPID;        $this->parameters[&#39;mchid&#39;]     = WxPayConf_pub::MCHID;        $this->parameters[&#39;nonce_str&#39;] = $this->createNoncestr();        $this->parameters[&#39;sign&#39;]      = $this->getSign($this->parameters);        return $this->arrayToXml($this->parameters);
    }    /**
     *     作用：使用证书，以post方式提交xml到对应的接口url     */
    function postXmlSSLCurl($xml,$url,$second=30)
    {        $ch = curl_init();        //超时时间
        curl_setopt($ch,CURLOPT_TIMEOUT,$second);        //这里设置代理，如果有的话
        //curl_setopt($ch,CURLOPT_PROXY, &#39;8.8.8.8&#39;);
        //curl_setopt($ch,CURLOPT_PROXYPORT, 8080);
        curl_setopt($ch,CURLOPT_URL, $url);
        curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,FALSE);
        curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,FALSE);        //设置header
        curl_setopt($ch,CURLOPT_HEADER,FALSE);        //要求结果为字符串且输出到屏幕上
        curl_setopt($ch,CURLOPT_RETURNTRANSFER,TRUE);        //设置证书
        curl_setopt($ch,CURLOPT_CAINFO, WxPayConf_pub::SSLROOTCA_PATH);        //使用证书：cert 与 key 分别属于两个.pem文件
        //默认格式为PEM，可以注释
        curl_setopt($ch,CURLOPT_SSLCERTTYPE,&#39;PEM&#39;);
        curl_setopt($ch,CURLOPT_SSLCERT, WxPayConf_pub::SSLCERT_PATH);        //默认格式为PEM，可以注释
        curl_setopt($ch,CURLOPT_SSLKEYTYPE,&#39;PEM&#39;);
        curl_setopt($ch,CURLOPT_SSLKEY, WxPayConf_pub::SSLKEY_PATH);        //post提交方式
        curl_setopt($ch,CURLOPT_POST, true);
        curl_setopt($ch,CURLOPT_POSTFIELDS,$xml);        $data = curl_exec($ch);        //返回结果
        if($data){
            curl_close($ch);            return $data;
        }        else {            $error = curl_errno($ch);            echo "curl出错，错误码:$error"."<br>";            echo "<a href=&#39;http://curl.haxx.se/libcurl/c/libcurl-errors.html&#39;>错误原因查询</a></br>";
            curl_close($ch);            return false;
        }
    }


}

Controller layer function implementation:

<?php/**
 * Author  :  Max.wen
 * DateTime: <15/9/20 16:47> */namespace Home\Controller;class TestController extends CommonController
{    /**
     * 企业付款测试     */
    public function rebate()
    {
        import(&#39;Common.Util.WxMchPay&#39;);        $mchPay = new \WxMchPay();        // 用户openid
        $mchPay->setParameter(&#39;openid&#39;, &#39;oy2lbszXkgvlEKThrzqEziKEBzqU&#39;);        // 商户订单号
        $mchPay->setParameter(&#39;partner_trade_no&#39;, &#39;test-&#39;.time());        // 校验用户姓名选项
        $mchPay->setParameter(&#39;check_name&#39;, &#39;NO_CHECK&#39;);        // 企业付款金额  单位为分
        $mchPay->setParameter(&#39;amount&#39;, 100);        // 企业付款描述信息
        $mchPay->setParameter(&#39;desc&#39;, &#39;开发测试&#39;);        // 调用接口的机器IP地址  自定义
        $mchPay->setParameter(&#39;spbill_create_ip&#39;, &#39;127.0.0.1&#39;); # getClientIp()
        // 收款用户姓名
        // $mchPay->setParameter(&#39;re_user_name&#39;, &#39;Max wen&#39;);
        // 设备信息
        // $mchPay->setParameter(&#39;device_info&#39;, &#39;dev_server&#39;);

        $response = $mchPay->postXmlSSL();        if( !empty($response) ) {            $data = simplexml_load_string($response, null, LIBXML_NOCDATA);            echo json_encode($data);
        }else{            echo json_encode( array(&#39;return_code&#39; => &#39;FAIL&#39;, &#39;return_msg&#39; => &#39;transfers_接口出错&#39;, &#39;return_ext&#39; => array()) );
        }
    }
}

Complete the above two parts Code, you can basically call the enterprise payment API successfully.

Example of data structure of returned result:

{
	"return_code": "SUCCESS",
	"return_msg": { },
	"mch_appid": "wx519cae424099ed6b",
	"mchid": "1228636402",
	"device_info": { },
	"nonce_str": "qjupk84q4iqxkb578hb5h2qiatgcwxwg",
	"result_code": "SUCCESS",
	"partner_trade_no": "test-1442801966",
	"payment_no": "1000018301201509210739170397",
	"payment_time": "2015-09-21 10:19:26"
}

Possible problems:

1. CA certificate error

As you can see in WxMchPay, I rewrote the postXmlSSLCurl() method of Wxpay_client_pub in the SDK

Because By default, this method in the SDK does not include a CA certificate when making a CURL POST request.

In comparison

　curl_setopt($ch,CURLOPT_CAINFO, WxPayConf_pub::SSLROOTCA_PATH); Such a line of code.　　

　 The function is to attach the CA certificate when requesting.

2, The transfer operation for the same user is too frequent, please try again later.

This error belongs to WeChat There is no explanation of the server-side restrictions and the specific frequency limit, but after actual testing, it is about 1 minute.

So you need to pay more attention when developing.

【Related recommendations】

1. WeChat public account platform source code download

2. WeChat voting source code free download

The above is the detailed content of Enterprise payment for small program development. For more information, please follow other related articles on the PHP Chinese website!