微信发红包功能的实现

布满荆棘的人生 2022-06-14 06:17 246阅读 0赞

微信商家后台-现金红包开发：

<?php
    class wxPay {
        //配置参数信息
        const SHANGHUHAO = "";//商户号
        const PARTNERKEY = "";    //api，商户后台
        //核心支付函数,参数：请求地址和参数
        function pay($url,$obj) {
            $obj['nonce_str'] = $this->create_noncestr();    //创建随机字符串
            $stringA = $this->create_qianming($obj,false);    //创建签名
            $stringSignTemp = $stringA."&key=leFyTOXWzUEXxfp47WOu5xxxxxx";    //签名后加api
            $sign = strtoupper(md5($stringSignTemp));    //签名加密并大写
            $obj['sign'] = $sign;    //将签名传入数组
            $postXml = $this->arrayToXml($obj);    //将参数转为xml格式
            var_dump($postXml);    
            $responseXml = $this->curl_post_ssl($url,$postXml);    //提交请求
            var_dump($responseXml);
            return $responseXml;
        }
        
        //生成签名,参数：生成签名的参数和是否编码
        function create_qianming($arr,$urlencode) {
            $buff = "";
            ksort($arr); //对传进来的数组参数里面的内容按照字母顺序排序，a在前面，z在最后（字典序）
            foreach ($arr as $k=>$v) {
                if(null!=$v && "null" != $v && "sign" != $k) {    //签名不要转码
                    if ($urlencode) {
                        $v = urlencode($v);
                    }
                    $buff.=$k."=".$v."&";
                }
            }
            if (strlen($buff)>0) {    
                $reqPar = substr($buff,0,strlen($buff)-1); //去掉末尾符号“&”
            }
            return $reqPar;
        }
        
        //生成随机字符串，默认32位
        function create_noncestr($length=32) {
            //创建随机字符
            $chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
            $str = "";
            for($i=0;$i<$length;$i++) {
                $str.=substr($chars, mt_rand(0,strlen($chars)-1),1);
            }
            return $str;    
        }
        //数组转xml
        function arrayToXml($arr) {
            $xml = "<xml>";
            foreach ($arr as $key=>$val) {
                if (is_numeric($val)) {
                    $xml.="<".$key.">".$val."</".$key.">";
                } else {
                    $xml.="<".$key."><![CDATA[".$val."]]></".$key.">";
                }
            }
            $xml.="</xml>";
            return $xml;
        }
        
        //post请求网站，需要证书
        function curl_post_ssl($url, $vars, $second=30,$aHeader=array())
        {
            $ch = curl_init();
            //超时时间
            curl_setopt($ch,CURLOPT_TIMEOUT,$second);
            curl_setopt($ch,CURLOPT_RETURNTRANSFER, 1);
            //这里设置代理，如果有的话
            curl_setopt($ch,CURLOPT_URL,$url);
            curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,false);
            curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,false);
            //cert 与 key 分别属于两个.pem文件
            //请确保您的libcurl版本是否支持双向认证，版本高于7.20.1
            curl_setopt($ch,CURLOPT_SSLCERT,dirname(__FILE__).DIRECTORY_SEPARATOR.
                    'zhengshu'.DIRECTORY_SEPARATOR.'apiclient_cert.pem');
            curl_setopt($ch,CURLOPT_SSLKEY,dirname(__FILE__).DIRECTORY_SEPARATOR.
                    'zhengshu'.DIRECTORY_SEPARATOR.'apiclient_key.pem');
            curl_setopt($ch,CURLOPT_CAINFO,dirname(__FILE__).DIRECTORY_SEPARATOR.
                    'zhengshu'.DIRECTORY_SEPARATOR.'rootca.pem');
            if( count($aHeader) >= 1 ){
                curl_setopt($ch, CURLOPT_HTTPHEADER, $aHeader);
            }
            curl_setopt($ch,CURLOPT_POST, 1);
            curl_setopt($ch,CURLOPT_POSTFIELDS,$vars);
            $data = curl_exec($ch);
            if($data){
                curl_close($ch);
                return $data;
            }
            else {
                $error = curl_errno($ch);
                echo "call faild, errorCode:$error\n";
                curl_close($ch);
                return false;
            }
        }
        
    }

证书文件：

请在微信商户后台-API安全下载，PHP请使用php的证书文件

微信红包调用测试文件：

<?php
    require 'wxpay.class.php';<br><br>//数组参数
    $money = 100; //最低1元，单位分
    $sender = "晨缘房产";
    $obj2 = array();
    $obj2['wxappid'] = ""; //appid
    $obj2['mch_id'] = "";　　//商户id
    $obj2['mch_billno'] = "商户id".date('YmdHis').rand(1000,9999);　　//组合成28位，根据官方开发文档，可以自行设置
    $obj2['client_ip'] = $_SERVER['REMOTE_ADDR'];
    $obj2['re_openid'] = "";　　//接收红包openid
    $obj2['total_amount'] = $money;
    $obj2['min_value'] = $money;
    $obj2['max_value'] = $money;
    $obj2['total_num'] = 1;
    $obj2['nick_name'] = $sender;
    $obj2['send_name'] = $sender;
    $obj2['wishing'] = "恭喜发财";
    $obj2['act_name'] = $sender."红包";
    $obj2['remark'] = $sender."红包";
     
    $url = "https://api.mch.weixin.qq.com/mmpaymkttransfers/sendredpack";
    $wxpay = new wxPay();
    $res = $wxpay->pay($url, $obj2);
    var_dump($res);