微信红包api接口实现小编以前有介绍过相关的教程，不过这次好像有一点不一样下面我们来看看，教程比上次的更完整。

一、微信红包文档说明

目前微信红包总共分现金红包和裂变红包两种。

1、现金红包：https://pay.weixin.qq.com/wiki/doc/api/cash_coupon.php?chapter=13_5

2、裂变红包：https://pay.weixin.qq.com/wiki/doc/api/cash_coupon.php?chapter=16_5

更多请查看：https://pay.weixin.qq.com/wiki/doc/api/cash_coupon.php

二、php接口实现

本文讲解现金红包的调用，其他的大体一样，就不去尝试了。

参数说明：

代码实现：

片段一、

/**

* 微信支付

* @param string $openid 用户openid

*/

public function pay($re_openid)

{

include_once('WxPacketClass.php');

$wxHongBaoHelper = new WxPacketClass($this->app_sign);

$wxHongBaoHelper->setParameter("nonce_str", $this->great_rand());//随机字符串，丌长于 32 位

$wxHongBaoHelper->setParameter("mch_billno", $this->app_mchid.date('YmdHis').rand(1000, 9999));//订单号(28位)

$wxHongBaoHelper->setParameter("mch_id", $this->app_mchid);//商户号

$wxHongBaoHelper->setParameter("wxappid", $this->app_id);

$wxHongBaoHelper->setParameter("send_name", '扬和宏科技');//红包发送者名称

$wxHongBaoHelper->setParameter("re_openid", $re_openid);//openid

$wxHongBaoHelper->setParameter("total_amount", 100);//付款金额，单位分

$wxHongBaoHelper->setParameter("total_num", 1);//红包?Х抛苋耸?br />

$wxHongBaoHelper->setParameter("wishing", '给您拜个晚年，祝您晚年幸福！');//红包祝福诧

$wxHongBaoHelper->setParameter("client_ip", '127.0.0.1');//调用接口的机器 Ip 地址

$wxHongBaoHelper->setParameter("act_name", '拜年红包活动');//活劢名称

$wxHongBaoHelper->setParameter("remark", '大家快来抢！');//备注信息

$postXml = $wxHongBaoHelper->create_hongbao_xml();

$url = 'https://api.mch.weixin.qq.com/mmpaymkttransfers/sendredpack';

$responseXml = $wxHongBaoHelper->curl_post_ssl($url, $postXml);

$responseObj = simplexml_load_string($responseXml, 'SimpleXMLElement', LIBXML_NOCDATA);

return $responseObj->return_code;

}

片段二、

//生成红包接口XML信息

/*

![CDATA[E1EE61A9]]

![CDATA[00100]]

![CDATA[888]]

![CDATA[wxcbda96de0b165486]]

![CDATA[send_name]]

![CDATA[onqOjjXXXXXXXXX]]

![CDATA[100]]

![CDATA[1]]

![CDATA[恭喜发财]]

![CDATA[127.0.0.1]]

![CDATA[新年红包]]

![CDATA[act_id]]

![CDATA[新年红包]]

*/

function create_hongbao_xml($retcode = 0, $reterrmsg = "ok"){

try {

$this->setParameter('sign', $this->get_sign());

$commonUtil = new CommonUtil();

return $commonUtil->arrayToXml($this->parameters);

}catch (SDKException $e) {

die($e->errorMessage());

}

}

片段三、

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

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.'apiclient_key.pem');

curl_setopt($ch,CURLOPT_CAINFO,dirname(__FILE__).DIRECTORY_SEPARATOR.'cert'.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);

curl_close($ch);

return false;

}

}

代码结构：

|~action/

| `-PacketClass.php

|~lib/

| |~cert/

| | |-apiclient_cert.pem

| | |-apiclient_key.pem

| | `-rootca.pem

| |-SdkExtraClass.php

| |-WxApi.php

| `-WxPacketClass.php

`-index.php

每个文件都有详细的说明。

三、效果展示