DukeAnn
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微信公众号自动发送红包

贴出核心接口代码至于数据自己填写,接口测试OK
wechat_packet.php

<?php
/**
 * 发送红包接口
 * Created by PhpStorm.
 * User: ADKi
 * Date: 2016/4/25 0025
 * Time: 15:25
 */

class wechat_packet{
    private $url = 'https://api.mch.weixin.qq.com/mmpaymkttransfers/sendredpack';//请求URL
    private $mch_id;//商户号
    private $weixin_appid;//公众账号appid
    private $send_name;//商户名称
    private $total_num = 1;//发送红包总人数
    private $wishing;//红包祝福语
    private $client_ip;//调用接口的机器Ip地址
    private $act_name;//活动名称
    private $remark;//备注信息
    private $nonce_str;//随机字符串,不长于32位
    private $api_password;
    private $arraytoxml;//数组转xml
    /**
     * 公钥
     */
    private $public_key = "/api/wechat/cert/apiclient_cert.pem";
    /**
     * 私钥
     */
    private $private_key = '/api/wechat/cert/apiclient_key.pem';
    /**
     * ca证书
     */
    private $rootca = 'api/wechat/cert/rootca.pem';

    public function __construct()
    {
        //初始化红包设置信息
        $this->weixin_appid = C('wap_weixin_appid');
        $this->mch_id = C('wechat_mch_id');
        $this->send_name = C('wechat_send_name');
        $this->wishing = C('wechat_wishing');
        $this->act_name = C('wechat_act_name');
        $this->client_ip = $_SERVER['SERVER_ADDR'];
        $this->remark = C('wechat_remark');
        $this->nonce_str = $this->create_nonce_str(32);
        $this->api_password = C('wechat_api_password');
        $inc_file = BASE_PATH.DS.'api'.DS.'wechat'.DS.'arraytoxml.php';
        if(is_file($inc_file)) {
            require($inc_file);
        }
        $this->arraytoxml = new ArrayToXML();
    }

    public function send_post($mch_billno,$re_openid,$total_amount){
        $sign = $this->create_sign($mch_billno,$re_openid,$total_amount);

        $send_array = array(
            'nonce_str' => $this->nonce_str,
            'mch_billno' => $mch_billno,
            'mch_id' => $this->mch_id,
            'wxappid' => $this->weixin_appid,
            'send_name' => $this->send_name,
            're_openid' => $re_openid,
            'total_amount' => $total_amount,
            'total_num' => $this->total_num,
            'wishing' => $this->wishing,
            'client_ip' => $this->client_ip,
            'act_name' => $this->act_name,
            'remark' => $this->remark,
            'sign' => $sign,
        );
        $send_xml = $this->arraytoxml->toXml($send_array,'');
        $data = $this->curl_post_ssl($this->url, $send_xml);
        $data = $this->xmlToArray($data);
        file_put_contents('adki',var_export($data,true),FILE_APPEND);
    }

    /*
    请确保您的libcurl版本是否支持双向认证,版本高于7.20.1
    */
    private 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($ch,CURLOPT_PROXY, '10.206.30.98');
        //curl_setopt($ch,CURLOPT_PROXYPORT, 8080);
        curl_setopt($ch,CURLOPT_URL,$url);
        curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,false);
        curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,false);

        //以下两种方式需选择一种

        //第一种方法,cert 与 key 分别属于两个.pem文件
        //默认格式为PEM,可以注释
        curl_setopt($ch,CURLOPT_SSLCERTTYPE,'PEM');
        curl_setopt($ch,CURLOPT_SSLCERT,getcwd().$this->public_key);
        //默认格式为PEM,可以注释
        curl_setopt($ch,CURLOPT_SSLKEYTYPE,'PEM');
        curl_setopt($ch,CURLOPT_SSLKEY,getcwd().$this->private_key);
        //ca证书
        curl_setopt($ch,CURLOPT_CAINFO,$this->rootca);
        //第二种方式,两个文件合成一个.pem文件
        //curl_setopt($ch,CURLOPT_SSLCERT,getcwd().'/all.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;
        }
    }


    //生成签名
    private function create_sign($mch_billno,$re_openid,$total_amount){
        $string_array = array(
            'act_name' => $this->act_name,
            'client_ip' => $this->client_ip,
            'mch_billno' => $mch_billno,
            'mch_id' => $this->mch_id,
            'nonce_str' => $this->nonce_str,
            're_openid' => $re_openid,
            'remark' => $this->remark,
            'send_name' => $this->send_name,
            'total_amount' => $total_amount,
            'total_num' => $this->total_num,
            'wishing' => $this->wishing,
            'wxappid' => $this->weixin_appid,
        );
        foreach ($string_array as $key => $value){
            if(!empty($value)){
                $stringA .= "$key=$value";
                if($key != 'wxappid'){
                    $stringA .= '&';
                }
            }
        }
        //转成UTF-8
        $stringA = $this->gbkToUtf8($stringA);
        $stringSignTemp="$stringA&key=$this->api_password";
        $sign = MD5($stringSignTemp);
        $sign = strtoupper($sign);
        return $sign;
    }

    //生成随机字符串
    private function create_nonce_str($length){
        $str = null;
        $strPol = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz";
        $max = strlen($strPol)-1;

        for($i=0;$i<$length;$i++){
            $str.=$strPol[rand(0,$max)];//rand($min,$max)生成介于min和max两个数之间的一个随机整数
        }
        return $str;
    }

    /**
     *自动判断把gbk或gb2312编码的字符串转为utf8
     *能自动判断输入字符串的编码类,如果本身是utf-8就不用转换,否则就转换为utf-8的字符串
     *支持的字符编码类型是:utf-8,gbk,gb2312
     *@$str:string 字符串
     */
    private function gbkToUtf8($str){
        $charset = mb_detect_encoding($str,array('ASCII','UTF-8','GBK','GB2312'));
        $charset = strtolower($charset);
        if("utf-8" != $charset){
            $str = iconv('UTF-8',$charset,$str);
        }
        return $str;
    }

    private function xmlToArray($postStr){
        $msg = array();
        $msg = (array)simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
        return $msg;
    }
}

数组转xml
arraytoxml.php

<?php
/**
 * Created by PhpStorm.
 * User: ADKi
 * Date: 2016/4/26 0026
 * Time: 12:19
 */
class ArrayToXML

{

    public function toXml($data){
        $xml = '<xml>';
        foreach ($data as $key => $value){
            if (is_numeric($value)){
                $xml .= "<".$key.">".$value."</".$key.">";
            }else{
                $xml .= "<".$key."><![CDATA[".$value."]]></".$key.">";
            }
        }
        $xml .= '</xml>';
        return $xml;
    }

}
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