微信公众号开发（六）微信支付（发红包、企业支付到零钱）需要证书请求示例

class WxPayController extends CommonController
{
    /**
     * @name: 公众号appid
     * @author: camellia
     * @date: 2021-02-19 
     */
    private $appid = 'xxx';
    /**
     * @name: 微信支付商户秘钥
     * @author: camellia
     * @date: 2021-02-19 
     */
    private $mch_id = 'xxx';
    /**
     * @name: 自定义秘钥key
     * @author: camellia
     * @date: 2021-02-19 
     */
    private $wxpay_key = 'xxx';
    /**
     * @name curl_post公共请求方法
     * @author camellia
     * @date 20200630
     * @param $url 请求连接
     * @param $data 请求参数
     */
    public function curlPost($url, $data)
    {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        // 请求的时候需要带上证书信息（证书路径需要是绝对路径）
        curl_setopt($ch, CURLOPT_SSLCERT, '/xxx/xxx/xxx/xxx/xxx/xxx/xxx/xxx/xxx/xxx/xxxx/xxx/xxx/xxx/apiclient_cert.pem');
        curl_setopt($ch, CURLOPT_SSLKEY, '/xxx/xxx/xxx/xxx/xxx/xxx/xxx/xxx/xxx/xxx/xxx/xxx/xxx/xxx/apiclient_key.pem');
        // curl_setopt($ch, CURLOPT_CAINFO, '/xxx/xxx/xxx/xxx/rootca.pem'); // CA根证书（用来验证的网站证书是否是CA颁布）
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
        // POST数据
        curl_setopt($ch, CURLOPT_POST, 1);
        // 把post的变量加上
        curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
        $output = curl_exec($ch);
        curl_close($ch);
        return $output;
    }
    /**
     * @name: 微信签名加密算法
     * @author: camellia
     * @date: 2021-02-19 
     * @param:  $data   array   微信支付请求数据数组
     * @return: $sign   string  微信支付签名字符串
     */
    public function Cryptage($data)
    {
        ksort($data);
        $stringA = '';
        foreach ($data as $k => $v) 
        {
            $stringA .= $k . '=' . $v . '&';
        }
        $stringA .= 'key=' . $this->wxpay_key;
        $sign = strtoupper(md5($stringA));
        return $sign;
    }
    /**
     * @name: 给用户发钱（红包）
     * @author: camellia
     * @date: 2021-02-19 
     * @param:  wx_exchange  微信支付订单表
     * @return: data    type    description
     * 官方文档：https://pay.weixin.qq.com/wiki/doc/api/tools/cash_coupon.php?chapter=13_4&index=3
     */
    public function sendMoneyToUser()
    {
        // 用户openid
        $openid = 'xxxx';
        // 发放现金额度
        $total_amount = 101;
        $mch_billno = 'hb'.time(). rand(10000, 99999);
        // 商户订单号
        $data['mch_billno'] = $mch_billno;
        // 微信商户号
        $data['mch_id'] = $this->mch_id;
        // 公众号appid
        $data['wxappid'] = $this->appid;
        // 商户名称
        $data['send_name'] = 'xxx';
        // 用户openid
        $data['re_openid'] = $openid;
        // 付款金额
        $data['total_amount'] = $total_amount;
        // 红包总数
        $data['total_num'] = 1;
        // 红包祝福语
        $data['wishing'] = 'xxx';
        // client_ip
        $data['client_ip'] = 'xxx';
        // 活动名称
        $data['act_name'] = 'xxx';
        // 备注
        $data['remark'] = 'xxx';
        // 场景id
        // $data['scene_id'] = 'PRODUCT_2';
        // 随机字符串
        $data['nonce_str'] = 'xxxxx';
        $sign = $this->Cryptage($data);
        $str = "<xml> 
                <sign>$sign</sign> 
                <mch_billno>".$data['mch_billno']."</mch_billno> 
                <mch_id>".$data['mch_id']."</mch_id> 
                <wxappid>".$data['wxappid']."</wxappid> 
                <send_name>".$data['send_name']."</send_name> 
                <re_openid>".$data['re_openid']."</re_openid> 
                <total_amount>".$data['total_amount']."</total_amount> 
                <total_num>".$data['total_num']."</total_num> 
                <wishing>".$data['wishing']."</wishing> 
                <client_ip>".$data['client_ip']."</client_ip> 
                <act_name>".$data['act_name']."</act_name> 
                <remark>".$data['remark']."</remark> 
                <nonce_str>".$data['nonce_str']."</nonce_str>  
                </xml>";
        $url = "https://api.mch.weixin.qq.com/mmpaymkttransfers/sendredpack";
        $result = $this->curlPost($url, $str);
        var_dump($result);die;
    }
}