odd_job/extend/payment/wechat/WechatTransfers.php

<?php
/**
 * 微信付款到零钱
 */

namespace payment\wechat;

class WechatTransfers
{
    const TRANSFERS_URL = '/mmpaymkttransfers/promotion/transfers';

    private $app_id = '';
    private $mchid = '';
    private $secret_key = '';
    private $ip = '';

    public function __construct($app_id, $mchid, $secret_key, $ip)
    {
        $this->app_id     = $app_id;
        $this->mchid      = $mchid;
        $this->secret_key = $secret_key;
        $this->ip         = $ip;
    }

    public function xmltoarray($xml)
    {
        //禁止引用外部xml实体
        libxml_disable_entity_loader(true);
        $xmlstring = simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA);
        $val       = json_decode(json_encode($xmlstring), true);
        return $val;
    }

    public function arraytoxml($data)
    {
        $str = '<xml>';
        foreach ($data as $k => $v) {
            $str .= '<' . $k . '>' . $v . '</' . $k . '>';
        }
        $str .= '</xml>';
        return $str;
    }

    public function createNoncestr($length = 32)
    {
        $chars = "ABCDEFGHIJKLMNOPQRSTUVWXYabcdefghijklmnopqrstuvwxyz0123456789";
        $str   = "";

        for ($i = 0; $i < $length; $i++) {
            $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
        }
        return $str;
    }

    public function curl_post_ssl($url, $xmldata, $second = 30, $aHeader = [])
    {
        $isdir = $_SERVER['DOCUMENT_ROOT'] . "/cert/";//证书位置;绝对路径

        $ch = curl_init();//初始化curl

        curl_setopt($ch, CURLOPT_TIMEOUT, $second);//设置执行最长秒数
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);//要求结果为字符串且输出到屏幕上
        curl_setopt($ch, CURLOPT_URL, $url);//抓取指定网页
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);// 终止从服务端进行验证
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);//
        curl_setopt($ch, CURLOPT_SSLCERTTYPE, 'PEM');//证书类型
        curl_setopt($ch, CURLOPT_SSLCERT, $isdir . 'apiclient_cert.pem');//证书位置
        curl_setopt($ch, CURLOPT_SSLKEYTYPE, 'PEM');//CURLOPT_SSLKEY中规定的私钥的加密类型
        curl_setopt($ch, CURLOPT_SSLKEY, $isdir . 'apiclient_key.pem');//证书位置
        curl_setopt($ch, CURLOPT_CAINFO, 'PEM');
        curl_setopt($ch, CURLOPT_CAINFO, $isdir . 'rootca.pem');
        if (($aHeader) >= 1) {
            curl_setopt($ch, CURLOPT_HTTPHEADER, $aHeader);//设置头部
        }
        curl_setopt($ch, CURLOPT_POST, 1);//post提交方式
        curl_setopt($ch, CURLOPT_POSTFIELDS, $xmldata);//全部数据使用HTTP协议中的"POST"操作来发送

        $data = curl_exec($ch);//执行回话
        if ($data) {
            curl_close($ch);
            return $data;
        } else {
            $error = curl_errno($ch);
            echo "call faild, errorCode:$error";
            curl_close($ch);
            return false;
        }
    }

    function sendMoney($amount, $re_openid, $desc = '测试', $check_name = '')
    {

        $total_amount = (100) * $amount;

        $data = [
            'mch_appid'        => $this->app_id,//商户账号appid
            'mchid'            => $this->mchid,//商户号
            'nonce_str'        => $this->createNoncestr(),//随机字符串
            'partner_trade_no' => date('YmdHis') . rand(1000, 9999),//商户订单号
            'openid'           => $re_openid,//用户openid
            'check_name'       => 'NO_CHECK',//校验用户姓名选项,
            're_user_name'     => $check_name,//收款用户姓名
            'amount'           => $total_amount,//金额
            'desc'             => $desc,//企业付款描述信息
            'spbill_create_ip' => $this->ip,//Ip地址
        ];

        //生成签名算法
        $secrect_key = $this->secret_key;///这个就是个API密码。MD5 32位。
        $data        = array_filter($data);
        ksort($data);
        $str = '';
        foreach ($data as $k => $v) {
            $str .= $k . '=' . $v . '&';
        }
        $str          .= 'key=' . $secrect_key;
        $data['sign'] = md5($str);
        //生成签名算法


        $xml = $this->arraytoxml($data);

        $url    = 'https://api.mch.weixin.qq.com/mmpaymkttransfers/promotion/transfers'; //调用接口
        $res    = $this->curl_post_ssl($url, $xml);
        $return = $this->xmltoarray($res);


        print_r($return);
        //返回来的结果是xml，最后转换成数组
        /*
        array(9) {
         ["return_code"]=>
         string(7) "SUCCESS"
         ["return_msg"]=>
         array(0) {
         }
         ["mch_appid"]=>
         string(18) "wx57676786465544b2a5"
         ["mchid"]=>
         string(10) "143345612"
         ["nonce_str"]=>
         string(32) "iw6TtHdOySMAfS81qcnqXojwUMn8l8mY"
         ["result_code"]=>
         string(7) "SUCCESS"
         ["partner_trade_no"]=>
         string(18) "201807011410504098"
         ["payment_no"]=>
         string(28) "1000018301201807019357038738"
         ["payment_time"]=>
         string(19) "2018-07-01 14:56:35"
        }
        */


        $responseObj = simplexml_load_string($res, 'SimpleXMLElement', LIBXML_NOCDATA);
        echo $res = $responseObj->return_code; //SUCCESS 如果返回来SUCCESS,则发生成功，处理自己的逻辑

        return $res;
    }
}