?php
/**
 * 微信紅包的類 
 * @Author snmoney#gmail.com 
 * @copyright 2015 
 * @version 2.0

 * *微信紅包還有部分可選的參數，如分享預設值等將在后續版本補充上相關功能。
 * 對應官方接口更新，追加了分裂紅包的玩法，詳情參考官方文檔。
 */

CLASS WXHongBao {

  private $mch_id = "********";               //商戶ID寫死
  private $wxappid = "********";          //微信公眾號，寫死
  private $client_ip = ""; //"127.0.0.1"; //調用紅包接口的主機的IP,服務端IP,寫死，即腳本文件所在的IP
  private $apikey = "";    //pay的秘鑰值
  private $total_num = 1;                   //發放人數。固定值1，不可修改
  private $nick_name = "微信公眾號紅包";           //紅包商戶名稱
  private $send_name = "微信公眾號紅包";          //紅包派發者名稱
  private $wishing = "歡迎再次參與";      //
  private $act_name = "";     //活動名稱
  private $remark = "";
  private $nonce_str = "";
  private $mch_billno = "";
  private $re_openid = "";    //接收方的openID
  private $total_amount = 1 ;   //紅包金額，單位 分
  private $min_value = 1;   //最小金額
  private $max_value = 1;   //根據接口要求，上述3值必須一致
  private $sign = "";     //簽名在send時生成
  private $amt_type;     //分裂紅包參數，在sendgroup中進行定義，是常量 ALL_RAND

  //證書，在構造函數中定義，注意！
  private $apiclient_cert; //= getcwd()."/apiclient_cert.pem";
  private $apiclient_key;// = getcwd()."/apiclient_key.pem";
  private $apiclient_ca;// = getcwd()."/apiclient_key.pem";

  //分享參數
  private $isShare = false; //有用？似乎是無用參數，全部都不是必選和互相依賴的參數
  private $share_content = ""; 
  private $share_url ="";
  private $share_imgurl = "";

  private $wxhb_inited;

  private $api_hb_group = "https://api.mch.weixin.qq.com/mmpaymkttransfers/sendgroupredpack";//裂變紅包
  private $api_hb_single = "https://api.mch.weixin.qq.com/mmpaymkttransfers/sendredpack";

  private $error = "ok"; //init

  /**
   * WXHongBao::__construct()
   * 步驟
   * new(openid,amount)
   * setnickname
   * setsend_name
   * setwishing
   * setact_name
   * setremark
   * send()
   * @return void
   */
  function __construct(){
    //好像沒有什么需要構造函數做的 引入需要的文件
    $this->wxhb_inited = false; 
    $this->apiclient_cert = getcwd() . "/zzz1/apiclient_cert.pem";
    $this->apiclient_key = getcwd() . "/zzz1/apiclient_key.pem";
    $this->apiclient_ca = getcwd() . "/zzz1/rootca.pem";
  }

  public function err(){
    return $this->error;
  }

  public function error(){
    return $this->err();
  }
  /**
   * WXHongBao::newhb()
   * 構造新紅包 
   * @param mixed $toOpenId
   * @param mixed $amount 金額分
   * @return void
   */
  public function newhb($toOpenId,$amount){

    if(!is_numeric($amount)){
      $this->error = "金額參數錯誤";
      return;
    }elseif($amount100){
      $this->error = "金額太小";
      return;
    }elseif($amount>20000){
      $this->error = "金額太大";
      return;
    }

    $this->gen_nonce_str();//構造隨機字串
    $this->gen_mch_billno();//構造訂單號
    $this->setOpenId($toOpenId);
    $this->setAmount($amount);
    $this->wxhb_inited = true; //標記微信紅包已經初始化完畢可以發送

    //每次new 都要將分享的內容給清空掉，否則會出現殘余被引用
    $this->share_content= "";
    $this->share_imgurl = "";
    $this->share_url = "";
  }

  /**
   * WXHongBao::sendGroup()
   * 發送裂變紅包,參數為裂變數量
   * @param integer $num 3-20
   * @return
   */
  public function sendGroup($num=3){
    $this->amt_type = "ALL_RAND";//$amt; 固定值。發送裂變紅包組文檔指定參數，隨機
    return $this->send($this->api_hb_group,$num);
  }

  public function getApiSingle(){
    return $this->api_hb_single;
  }

  public function getApiGroup(){
    return $this->api_hb_group;
  }

  public function setNickName($nick){
    $this->nick_name = $nick;
  }

  public function setSendName($name){
    $this->send_name = $name;
  }

  public function setWishing($wishing){
    $this->wishing = $wishing;
  }

  public function setActName($act){
    $this->act_name = $act;
  }

  public function setRemark($remark){
    $this->remark = $remark;
  }

  public function setOpenId($openid){
    $this->re_openid = $openid;
  }

  /**
   * WXHongBao::setAmount()
   * 設置紅包金額
   * 文檔有兩處沖突描述
   * 一處指金額 >=1 (分錢)
   * 另一處指金額 >=100  20000 [1-200元]
   * 有待測試驗證！
   * @param mixed $price 單位 分
   * @return void
   */
  public function setAmount($price){
    $this->total_amount = (int)$price;
    $this->min_value = (int)$price;
    $this->max_value = (int)$price;
  }

  //以下方法，為設置分裂紅包時使用
  public function setHBminmax($min,$max){
    $this->min_value = $min;
    $this->max_value = $max;
  }

  public function setShare($img="",$url="",$content=""){
    //https://mmbiz.qlogo.cn/mmbiz/MS1jaDO92Ep4qNo9eV0rnItptyBrzUhJqT8oxSsCofdxibnNWMJiabaqgLPkDaEJmia6fqTXAXulKBa9NLfxYMwYA/0?wx_fmt=png
    //http://mp.weixin.qq.com/s?__biz=MzA5Njg4NTk3MA==mid=206257621idx=1sn=56241da30e384e40771065051e4aa6a8#rd
    $this->share_content = $content;
    $this->share_imgurl = $img;
    $this->share_url = $url;
  }


  /**
   * WXHongBao::send()
   * 發出紅包
   * 構造簽名
   * 注意第二參數，單發時不要改動！
   * @return boolean $success
   */
  public function send(){

    $url = "https://api.mch.weixin.qq.com/mmpaymkttransfers/sendredpack";
    $total_num = 1;

    if(!$this->wxhb_inited) {
      $this->error .= "(紅包未準備好)";
      return false; //未初始化完成
    }

    $this->total_num = $total_num;

    $this->gen_Sign(); //生成簽名

    //構造提交的數據    
    $xml = $this->genXMLParam();

    //echo $xml;

    //debug
    file_put_contents("hbxml.debug",$xml);

    //提交xml,curl
    //$url = "https://api.mch.weixin.qq.com/mmpaymkttransfers/sendredpack";
    $ch = curl_init();   
    curl_setopt($ch,CURLOPT_TIMEOUT,10);
    curl_setopt($ch,CURLOPT_RETURNTRANSFER, 1);    
    curl_setopt($ch,CURLOPT_URL,$url);
    curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,false);
    curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,false);

    //curl_setopt($ch,CURLOPT_SSLCERTTYPE,'PEM');
    curl_setopt($ch,CURLOPT_SSLCERT,$this->apiclient_cert);    
    //curl_setopt($ch,CURLOPT_SSLKEYTYPE,'PEM');
    curl_setopt($ch,CURLOPT_SSLKEY,$this->apiclient_key);

    curl_setopt($ch,CURLOPT_CAINFO,$this->appclient_ca);

    /* 
    if( count($aHeader) >= 1 ){
      curl_setopt($ch, CURLOPT_HTTPHEADER, $aHeader);
    }
    */    
    curl_setopt($ch,CURLOPT_POST, 1);
    curl_setopt($ch,CURLOPT_POSTFIELDS,$xml);
    $data = curl_exec($ch);
     //die(print_r($data));
    if($data){
      curl_close($ch);
      $rsxml = simplexml_load_string($data);
      if($rsxml->return_code == 'SUCCESS' ){
        return true;
      }else{
        $this->error = json_encode($rsxml->return_msg);
        return false;  
      }
    }else{ 
      $this->error = curl_errno($ch);

      curl_close($ch);
      return false;
    }

  }

  private function gen_nonce_str(){
    $this->nonce_str = strtoupper(md5(mt_rand().time())); //確保不重復而已
  }

  private function gen_Sign(){
    unset($param); 
    //其實應該用key重排一次 right?
    $param["act_name"]=$this->act_name;//

    if($this->total_num==1){ //這些是裂變紅包用不上的參數，會導致簽名錯誤
      $param["client_ip"]=$this->client_ip;
       $param["max_value"]=$this->max_value;
       $param["min_value"]=$this->min_value;
      $param["nick_name"]=$this->nick_name;
    }

    $param["mch_billno"] = $this->mch_billno;  //   
    $param["mch_id"]=$this->mch_id;//    
    $param["nonce_str"]=$this->nonce_str;  //  
    $param["re_openid"]=$this->re_openid;//
    $param["remark"]=$this->remark;    //
    $param["send_name"]=$this->send_name;//
    $param["total_amount"]=$this->total_amount;//
    $param["total_num"]=$this->total_num;    //
    $param["wishing"]=$this->wishing;//
    $param["wxappid"]=$this->wxappid;//

    //裂變紅包 用不到就注釋掉
     if($this->share_content) $param["share_content"] = $this->share_content;
     if($this->share_imgurl) $param["share_imgurl"] = $this->share_imgurl;
     if($this->share_url) $param["share_url"] = $this->share_url;
    if($this->amt_type) $param["amt_type"] = $this->amt_type; //

    ksort($param); //按照鍵名排序...艸，上面排了我好久

    //$sign_raw = http_build_query($param)."key=".$this->apikey;
    $sign_raw = "";
    foreach($param as $k => $v){
      $sign_raw .= $k."=".$v."";
    }
    $sign_raw .= "key=".$this->apikey;
    //可以用下面方法查看
    // file_put_contents("11sign.txt",$sign_raw);//debug
    $this->sign = strtoupper(md5($sign_raw));

  }

  /**
   * WXHongBao::genXMLParam()
   * 生成post的參數xml數據包
   * 注意生成之前各項值要生成，尤其是Sign
   * @return $xml
   */
  public function genXMLParam(){
    // $xml = "xml>


    //   sign>".$this->sign."/sign> 
    //   mch_billno>".$this->mch_billno."/mch_billno> 
    //   mch_id>".$this->mch_id."/mch_id> 
    //   wxappid>".$this->wxappid."/wxappid> 
    //   nick_name>![CDATA[".$this->nick_name."]]>/nick_name> 
    //   send_name>![CDATA[".$this->send_name."]]>/send_name> 
    //   re_openid>".$this->re_openid."/re_openid> 
    //   total_amount>".$this->total_amount."/total_amount> 
    //   min_value>".$this->min_value."/min_value> 
    //   max_value>".$this->max_value."/max_value> 
    //   total_num>".$this->total_num."/total_num> 
    //   wishing>![CDATA[".$this->wishing."]]>/wishing> 
    //   client_ip>![CDATA[".$this->client_ip."]]>/client_ip> 
    //   act_name>![CDATA[".$this->act_name."]]>/act_name> 
    //   remark>![CDATA[".$this->remark."]]>/remark>       
    //   nonce_str>".$this->nonce_str."/nonce_str>";
   $xml = "xml>
         act_name>![CDATA[".$this->act_name."]]>/act_name> 
         client_ip>![CDATA[".$this->client_ip."]]>/client_ip> 
         max_value>".$this->max_value."/max_value> 
          mch_billno>".$this->mch_billno."/mch_billno> 
          mch_id>".$this->mch_id."/mch_id>
          min_value>".$this->min_value."/min_value> 
          nick_name>![CDATA[".$this->nick_name."]]>/nick_name> 
          nonce_str>".$this->nonce_str."/nonce_str>
          re_openid>".$this->re_openid."/re_openid> 
          remark>![CDATA[".$this->remark."]]>/remark>
           send_name>![CDATA[".$this->send_name."]]>/send_name>
           total_amount>".$this->total_amount."/total_amount> 
           total_num>".$this->total_num."/total_num>
           wishing>![CDATA[".$this->wishing."]]>/wishing>
           wxappid>".$this->wxappid."/wxappid>
           sign>".$this->sign."/sign> 
        /xml>
           ";

      // nick_name>![CDATA[".$this->nick_name."]]>/nick_name> 



      // min_value>".$this->min_value."/min_value> 
      // max_value>".$this->max_value."/max_value> 

    // $xml .="/xml>";

    return $xml;
  }

  /**
   * WXHongBao::gen_mch_billno()
   * 商戶訂單號（每個訂單號必須唯一） 
    組成： mch_id+yyyymmdd+10位一天內不能重復的數字。 
    接口根據商戶訂單號支持重入， 如出現超時可再調用。 
   * @return void
   */
  private function gen_mch_billno(){
    //生成一個長度10，的阿拉伯數字隨機字符串
    $rnd_num = array('0','1','2','3','4','5','6','7','8','9');
    $rndstr = "";
    while(strlen($rndstr)10){
      $rndstr .= $rnd_num[array_rand($rnd_num)];  
    }

    $this->mch_billno = $this->mch_id.date("Ymd").$rndstr;
  }
}
/**
*1.上邊是紅包類，需要用的時候直接引入紅包類。
*2.//實例化紅包類
*  $wxhongbao=new \WXHongBao();
*3. //需要發放的openid 金額 openid 根據微信提供的接口獲取，金額根據自己需求
* $wxhongbao->newhb($user_openid, $pay_money*100);
*$wxhongbao->setActName("根據自己需求設置");
* $wxhongbao->setWishing("根據自己需求設置");
*$wxhongbao->setRemark("根據自己需求設置");
*參數設置之后發放紅包
*$wxhongbao->send();
**/
?>