php微信發紅包演算法

本篇文章主要介紹php發紅包演算法，感興趣的朋友參考下，希望對大家有所協助。

代碼如下：

<?php/** * 紅包的類  *  */CLASS WXHongBao {    private $mch_id = "111111";//商戶ID寫死  private $wxappid = "22222222";//公眾號，寫死  private $client_ip = "119.29.80.114"; //調用紅包介面的主機的IP,服務端IP,寫死，即指令檔所在的IP  private $apikey = "33333333";//pay的秘鑰值  private $total_num = 1;//發放人數。固定值1，不可修改    private $nick_name = "產品中心公眾號"; //紅包商戶名稱  private $send_name = "產品中心公眾號";//紅包派發者名稱  private $wishing = "祝福語"; //    private $act_name = "紅包活動"; //活動名稱  private $remark = "活動備忘";  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; //根據介面要求，上述3值必須一致         private $sign = ""; //簽名在send時產生    private $amt_type; //分裂紅包參數，在sendgroup中進行定義，是常量 ALL_RAND     //認證，在建構函式中定義，注意！  private $apiclient_cert; //= getcwd()."/apiclient_cert.pem";  private $apiclient_key;// = 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(){    //好像沒有什麼需要建構函式做的    $this->wxhb_inited = false;     $this->apiclient_cert = getcwd()."/apiclient_cert.pem";    $this->apiclient_key = getcwd()."/apiclient_key.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)){      $this->error = "金額參數錯誤";      return;    }elseif($amount<100){      $this->error = "金額太小";      return;    }elseif($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，否則會出現殘餘被引用    $this->share_content= "";    $this->share_imgurl = "";    $this->share_url = "";  }    /**   * WXHongBao::send()   * 發出紅包   * 建構簽章   * 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(); //產生簽名        //構造提交的資料        $xml = $this->genXMLParam();            //debug    file_put_contents("hbxml.txt",$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,$this->apiclient_key);        /*     if( count($aHeader) >= 1 ){      curl_setopt($ch, CURLOPT_HTTPHEADER, $aHeader);    }    */        curl_setopt($ch,CURLOPT_POST, 1);    curl_setopt($ch,CURLOPT_POSTFIELDS,$xml);    $data = curl_exec($ch);    if($data){      curl_close($ch);        $rsxml = simplexml_load_string($data);      if($rsxml->return_code == 'SUCCESS' ){        return true;      }else{        $this->error = $rsxml->return_msg;        return false;        }          }else{       $this->error = curl_errno($ch);             curl_close($ch);      return false;    }  }    /**   * 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;  }    /**   * WXHongBao::setActName()   * 活動名稱    * @param mixed $act   * @return void   */  public function setActName($act){    $this->act_name = $act;  }    public function setRemark($remark){    $this->remark = $remark;  }    public function setOpenId($openid){    $this->re_openid = $openid;  }    /**   * WXHongBao::setAmount()   * 設定紅包金額   * 文檔有兩處衝突描述    * 一處指金額 >=1 (分錢)   * 另一處指金額 >=100 < 20000 [1-200元]   * 有待測實驗證！   * @param mixed $price 單位 分   * @return void   */  public function setAmount($price){    $this->total_amount = $price;    $this->min_value = $price;    $this->max_value = $price;  }  //以下方法，為設定分裂紅包時使用  public function setHBminmax($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=206257621&idx=1&sn=56241da30e384e40771065051e4aa6a8#rd    $this->share_content = $content;    $this->share_imgurl = $img;    $this->share_url = $url;  }    private function gen_nonce_str(){    $this->nonce_str = strtoupper(md5(mt_rand().time())); //確保不重複而已  }    private function gen_Sign(){    unset($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;//        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;        //file_put_contents("sign.raw",$sign_raw);//debug    $this->sign = strtoupper(md5($sign_raw));  }    /**   * WXHongBao::genXMLParam()   * 產生post的參數xml資料包   * 注意產生之前各項值要產生，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>".$this->nonce_str."</nonce_str>      ";               if($this->share_content) $xml .= "<share_content><![CDATA[".$this->share_content."]]></share_content>    ";    if($this->share_imgurl) $xml .= "<share_imgurl><![CDATA[".$this->share_imgurl."]]></share_imgurl>    ";    if($this->share_url) $xml .= "<share_url><![CDATA[".$this->share_url."]]></share_url>    ";    if($this->amt_type) $xml .= "<amt_type><![CDATA[".$this->amt_type."]]></amt_type>    ";        $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位一天內不能重複的數字。     介面根據商戶訂單號支援重入， 如出現逾時可再調用。    * @return void   */  private function gen_mch_billno(){    //產生一個長度10，的阿拉伯數字隨機字串    $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;  }}　　　　?>然後執行個體化class.　　 $toOpenId = 'asdasdasd'; //接收紅包的使用者的OpenId    $hb = new WXHongBao();    $hb->newhb($toOpenId,1000); //建立一個10元的紅包，第二參數單位是 分，注意取值範圍 1-200元    //以下若干項可選操作，不指定則使用class指令碼頂部的預設值     $hb->setNickName("土豪有限公司");     $hb->setSendName("土豪");     $hb->setWishing("恭喜發財");     $hb->setActName("發錢活動");     $hb->setRemark("任性一把");    //發送紅包    if(!$hb->send()){ //發送錯誤      echo $hb->err();    }else{      echo "紅包發送成功";    }

總結：以上就是本篇文的全部內容，希望能對大家的學習有所協助。

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