微信红包接口API实现（php版）

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);//红包収放总人数
    $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
/*
<xml>
	<sign>![CDATA[E1EE61A9]]</sign>
	<mch_billno>![CDATA[00100]]</mch_billno>
	<mch_id>![CDATA[888]]</mch_id>
	<wxappid>![CDATA[wxcbda96de0b165486]]</wxappid>
	<send_name>![CDATA[send_name]]</send_name>
	<re_openid>![CDATA[onqOjjXXXXXXXXX]]</re_openid>
	<total_amount>![CDATA[100]]</total_amount>
	<total_num>![CDATA[1]]</total_num>
	<wishing>![CDATA[恭喜发财]]</wishing>
	<client_ip>![CDATA[127.0.0.1]]</client_ip>
	<act_name>![CDATA[新年红包]]</act_name>
	<act_id>![CDATA[act_id]]</act_id>
	<remark>![CDATA[新年红包]]</remark>
</xml>
*/
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

有需要的可以联系我~
因留言的朋友过于频繁，所以将该源码发布在github，地址：https://github.com/yangsir/wechat_red_packet#wechat_red_packet，可以移步~