本文實例講述了php實現的微信紅包算法。分享給大家供大家參考。具體如下:
具體代碼:
<?php /** * 微信紅包的類 * */ CLASS WXHongBao { private $mch_id = "111111";//商戶ID寫死 private $wxappid = "22222222";//微信公眾號,寫死 private $client_ip = "119.29.80.114"; //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 = "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 = "微信產品中心公眾號"; //紅包商戶名稱 private $send_name = "微信產品中心公眾號";//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 = "活動備注"; 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"; //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(){ //好像沒有什麼需要構造函數做的 $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::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 .= "(紅包未准備好)"; 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 = $this->genXMLParam(); //debug file_put_contents("hbxml.txt",$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 = $price; $this->min_value = $price; $this->max_value = $price; } //以下方法,為設置分裂紅包時使用 public function setHBminmax($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=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;// 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...艹,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() * 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>".$this->nonce_str."</nonce_str> "; if($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; } } ?> 然後實例化class. $toOpenId = 'asdasdasd'; //接收紅包的用戶的微信OpenId $hb = new WXHongBao(); $hb->newhb($toOpenId,1000); //新建一個10元的紅包,第二參數單位是 分,注意取值范圍 1-200元 //以下若干項可選操作,不指定則使用class腳本頂部的預設值 $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"; }
希望本文所述對大家的php程序設計有所幫助。