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Detailed explanation of WeChat red envelope implementation on WeChat
Detailed explanation of WeChat red envelope implementation on WeChat
本文实例讲述了PHP微信公众号开发之微信红包实现方法。分享给大家供大家参考，具体如下：
这几天遇到了一个客户 要给他们的微信公众平台上添加微信现金红包功能，是个二次开发的功能，顺手百度一下，原来不复杂。就着手开发功能了。现将开发的过程和需求贴出来分享一下：
一.需求：
粉丝通过在客户的公众平台点击他们公司的订单，然后给这个订单返现五元，发到订单的这个微信号上。
二.开发想法：
1：先拿到关注这个粉丝的openid,openid是关注某个公众号的微信标识，这样就可以定位到这个人是订单的操作者了。
2：发送xml数据请求微信服务器。
代码有两个php文件
1.oauth2.php
<?php
$code=$_GET['code'];
$state=$_GET['state'];
$appid='XXXX';
$appsecret='XXXXXXXX';//
if (empty($code)) $this->error('授权失败');
$token_url='https://api.weixin.qq.com/sns/oauth2/access_token?appid='.$appid'&secret='.$appsecret.'&code='.$code.'&grant_type=authorization_code';
$token=json_decode(file_get_contents($token_url));
if (isset($token->errcode)) {
echo '<h1>错误1</h1>'.$token->errcode;
echo '<br/><h2>错误信息1：</h2>'.$token->errmsg;
exit;
}
session_start();
$_SESSION['openid']= $token->openid;
header('location:http://www.XXXXXXX.com/XXXXX/XXXXXX/XXXXXX/hongbao.php');//要跳转的文件路径
?>2.hongbao.php
<?php
//XXXXX。。是需要开发者自己填写的内容，注意不要泄密
// 从session中获取到openid；
$openid=$_SESSION["openid"];
if(empty($openid))
{
header('location:https://open.weixin.qq.com/connect/oauth2/authorize?appid=XXXXXXXX&redirect_uri=http://www.XXXXXXX.com/oauth2.php&respose_type=code&scope=snsapi_base&state=XXXX&connect_redirect=1#wechat_redirect');
}
}
// 关键的函数
public function weixin_red_packet(){
// 请求参数
// 随机字符串
$data['nonce_str']=$this->get_unique_value();
//商户号，输入你的商户号
$data['mch_id']="XXXXXXX";
//商户订单号，可以按要求自己组合28位的商户订单号
$data['mch_billno']=$data['mch_id'].date("ymd")."XXXXXX".rand(1000,9999);
//公众帐号appid，输入自己的公众号appid
$data['wxappid']="XXXXXXX";
//商户名称
$data['send_name']="XXXXX";
//用户openid,输入待发红包的用户openid
session_start();
$data['re_openid']=$_SESSION["openid"];
//付款金额
$data['total_amount']="XXXX";
//红包发放总人数
$data['total_num']="XXXX";
//红包祝福语
$data['wishing']="XXXX";
//IP地址
$data['client_ip']=$_SERVER['LOCAL_ADDR'];
//活动名称
$data['act_name']="XXXXX";
//备注
$data['remark']="XXXXX";
// 生成签名
//对数据数组进行处理
//API密钥,输入自己的K 微信商户号里面的K
$appsecret="XXXXXXXXXXXXXX"; //
$data=array_filter($data);
ksort($data);
$str="";
foreach($data as $k=>$v){
$str.=$k."=".$v."&";
}
$str.="key=".$appsecret;
$data['sign']=strtoupper(MD5($str));
/*
发红包操作过程：
1.将请求数据转换成xml
2.发送请求
3.将请求结果转换为数组
4.将请求信息和请求结果录入到数据库中
4.判断是否通信成功
5.判断是否转账成功
*/
//发红包接口地址
$url="api.mch.weixin.qq.com/mmpaymkttransfers/sendredpack";
//将请求数据由数组转换成xml
$xml=$this->arraytoxml($data);
//进行请求操作
$res=$this->curl($xml,$url);
//将请求结果由xml转换成数组
$arr=$this->xmltoarray($res);
}
// 生成32位唯一随机字符串
private function get_unique_value(){
$str=uniqid(mt_rand(),1);
$str=sha1($str);
return md5($str);
}
// 将数组转换成xml
private function arraytoxml($arr){
$xml="<xml>";
foreach($arr as $k=>$v){
$xml.="<".$k.">".$v."</".$k.">";
}
$xml.="</xml>";
return $xml;
}
// 将xml转换成数组
private function xmltoarray($xml){
//禁止引用外部xml实体
libxml_disable_entity_loader(true);
$xmlstring=simplexml_load_string($xml,"SimpleXMLElement",LIBXML_NOCDATA);
$arr=json_decode(json_encode($xmlstring),true);
return $arr;
}
//进行curl操作
private function curl($param="",$url) {
$postUrl = $url;
$curlPost = $param;
//初始化curl
$ch = curl_init();
//抓取指定网页
curl_setopt($ch, CURLOPT_URL,$postUrl);
//设置header
curl_setopt($ch, CURLOPT_HEADER, 0);
//要求结果为字符串且输出到屏幕上
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
//post提交方式
curl_setopt($ch, CURLOPT_POST, 1);
// 增加 HTTP Header（头）里的字段
curl_setopt($ch, CURLOPT_POSTFIELDS, $curlPost);
// 终止从服务端进行验证
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
//证书放到网站根目录的cert文件夹底下
curl_setopt($ch,CURLOPT_SSLCERT,dirname(FILE).DIRECTORY_SEPARATOR.
'cert'.DIRECTORY_SEPARATOR.'apiclient_cert.pem');
curl_setopt($ch,CURLOPT_SSLKEY,dirname(FILE).DIRECTORY_SEPARATOR.
'cert'.DIRECTORY_SEPARATOR.'apiient_key.pem');
curl_setopt($ch,CURLOPT_CAINFO,dirname(FILE).DIRECTORY_SEPARATOR.
'cert'.DIRECTORY_SEPARATOR.'rootca.pem');
//运行curl
$data = curl_exec($ch);
//关闭curl
curl_close($ch);
return $data;
}
?>The above is the detailed content of Detailed explanation of WeChat red envelope implementation on WeChat. For more information, please follow other related articles on the PHP Chinese website!
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