WeChat cash red envelope interface implements red envelope issuance:

1: Process: [

Process: WeChat users access the red envelope activity page--"The backend determines whether it is accessed by WeChat

[No: Prompt to use WeChat to open the connection, Yes: Prompt the user whether to authorize permission, obtain their user information [openID and other information]]--》

Enter the red envelope activity page--- 》The user clicks to receive the red envelope [Judge whether the red envelope has been received] Yes: [Prompt that the red envelope has been received] No

--》The back-end program calls the interface to issue the red envelope

--》WeChat user in Receive a red envelope in WeChat

--》Open the red envelope

--》The amount of the red envelope will be added to the wallet change

--》Complete the distribution of the red envelope.

】

2: To implement the WeChat cash red envelope interface to issue red envelopes, the following conditions must first be met:

1. The WeChat public account used to issue red envelopes must be of service type

2. After logging in to the official website of the WeChat official platform, on the public platform backend management page - Developer Center page,

click the "Modify Configuration" button and fill in the server address (URL), Token and EncodingAESKey ,

where URL is the interface URL used by developers to receive WeChat messages and events. Token can be filled in arbitrarily by the developer, and

is used to generate a signature (the Token will be compared with the Token contained in the interface URL to verify security).

EncodingAESKey is manually filled in by the developer or randomly generated, and will be used as the message body encryption and decryption key.

3. Obtain access_token: Official accounts can use AppID and AppSecret to call this interface to obtain access_token.

[AppID and AppSecret can be obtained from the official website of WeChat public platform - Developer Center page (you need to have become a developer, and the account has no abnormal status). 】

4. The WeChat public account must open a "webpage authorization interface" for users to obtain basic user information [especially openID, which is used when sending red envelopes]

5. The "WeChat payment" of the WeChat public account "Merchant number" in " To activate WeChat payment [the amount of red envelopes will be deducted from the payment account], open the "cash red envelope" interface [call this interface to issue red envelopes].

6. Log in to “Merchant Account” [the merchant account assigned by WeChat official account. There are instructions in Chapter 5] In "API Security", download the PHP version of the certificate [.pem format]

If the above description is not clear, please check the WeChat Developer Documentation which has detailed flash sales.

Part of the code is as follows [please see the attachment for the rest]:

<?php
namespace RedClient\Controller;
use Think\Controller;
use RedClient\Redpack\WeiXinInfo;
use RedClient\Redpack\Oauth;
use RedClient\Redpack\SendRedPack;
use RedClient\Redpack\CreateRedPack;
class IndexController extends Controller 
    {
        public function index()
            {
                $this->isWeixin();//是否是微信打開
                if($this->access)
                    {
                        $this->display();
                         
                    }
                    else
                        {
                            $class=new Oauth();
                            $class->index(&#39;http://www.myweb.com/index.php/Index/oauth&#39;);
                        }
            }
         
        //獲取用戶信息 openID
        public function oauth()
            {
                $code=isset($_GET[&#39;code&#39;])?strip_tags(trim($_GET[&#39;code&#39;])):&#39;&#39;;
                $state=isset($_GET[&#39;state&#39;])?strip_tags(trim($_GET[&#39;state&#39;])):&#39;&#39;;
                 
                $class=new Oauth();
                $userInfo=$class->getCode($code,$state);//獲取用戶信息
                if(!empty($userInfo[&#39;data&#39;]))
                    {
                        //$model=M(&#39;wxuser&#39;);
                        //$result=$model->where(&#39;openid = "&#39;.$userInfo[&#39;data&#39;]->openid.&#39;"&#39;)->field(&#39;openid&#39;)->select();
                        if(empty($result))
                            {
                                $userInfo[&#39;data&#39;]=$this->object2array($userInfo[&#39;data&#39;]);
                                $model->data($userInfo[&#39;data&#39;])->add();
                                 
                            }
                    }
                $userInfo[&#39;data&#39;]=$this->object2array($userInfo[&#39;data&#39;]);
                 
                //創(chuàng)建紅包
                $class=new CreateRedPack();
                $red=$class->redval();
                 
                //發(fā)紅包
                $class=new SendRedPack();
                $configs=array(
                        &#39;send_name&#39;=>&#39;紅包發(fā)送者名稱&#39;,//紅包發(fā)送者名稱
                        &#39;re_openid&#39;=>$userInfo[&#39;data&#39;][&#39;openid&#39;],//接受紅包的用戶,用戶在wxappid下的openid
                        &#39;total_amount&#39;=>$red,//付款金額，單位分
                        &#39;total_num&#39;=>&#39;1&#39;,//紅包發(fā)放總?cè)藬?shù)
                        &#39;wishing&#39;=>&#39;紅包祝福語&#39;,//紅包祝福語
                        &#39;client_ip&#39;=>$_SERVER[&#39;SERVER_ADDR&#39;],//調(diào)用接口的機(jī)器Ip地址
                        &#39;act_name&#39;=>&#39;活動(dòng)名稱&#39;,//活動(dòng)名稱
                        &#39;remark&#39;=>&#39;備注信息&#39;,//  備注信息
                    );
                $class->setFields($configs);
                $result=$class->requestXml();
                 
                //微信返回信息處理
                if(strtoupper($result[&#39;return_code&#39;])==&#39;SUCCESS&#39;)
                    {
                        if(strtoupper($result[&#39;result_code&#39;])==&#39;SUCCESS&#39;)
                            {
                                //紅包發(fā)送成功!
                                                         
                                $datas[&#39;flag&#39;]=1;
                                echo $result[&#39;err_code_des&#39;];
                            }
                            else
                                {
                                    //紅包發(fā)送失敗
                                    $datas[&#39;flag&#39;]=0;
                                    $datas[&#39;msg&#39;]=$result[&#39;err_code_des&#39;];
                                    echo $result[&#39;err_code_des&#39;];
                                }
                    }
                    else
                        {
                            //紅包發(fā)送失敗
                            $datas[&#39;flag&#39;]=0;
                            $datas[&#39;msg&#39;]=$result[&#39;err_code_des&#39;];
                            echo $result[&#39;err_code_des&#39;];
                        }
            }
         
        public function isWeixin()
            {
                if (strpos($_SERVER[&#39;HTTP_USER_AGENT&#39;], &#39;MicroMessenger&#39;) !== false) 
                    { 
                        $this->access=true; 
                    } 
                return false; 
            }
         
        //類轉(zhuǎn)換成數(shù)組
        public function object2array($object) 
            {
              if (is_object($object)) 
                  {
                    foreach ($object as $key => $value) 
                        {
                          $array[$key] = $value;
                        }
                  }
                  else 
                      {
                        $array = $object;
                      }
              return $array;
            }
             
    }
    ?>

<?php
namespace RedClient\Redpack;
/**
    簡單紅包算法類
**/
class CreateRedPack
    {
        private $rid=0;//當(dāng)前紅包隨機(jī)數(shù)
        private $rand_arr=array();//35%是1.0到1.1 紅包隨機(jī)數(shù)
        private $rand_arr1=array();//35%是1.1到1.2 紅包隨機(jī)數(shù)
        private $rand_arr2=array();//30%是1.2到1.95 紅包隨機(jī)數(shù)
        private $red=0;//紅包金額
        private $simplered=0;
        private $red_config=array(
                                array(&#39;min&#39;=>1.0,&#39;max&#39;=>1.1),
                                array(&#39;min&#39;=>1.1,&#39;max&#39;=>1.2),
                                array(&#39;min&#39;=>1.2,&#39;max&#39;=>1.95)
                            );
                             
        public function __construct()
            {
                $this->rid=mt_rand(1,10000);//當(dāng)前紅包隨機(jī)數(shù)
                $this->rand_arr=range(1,3500);//35%是1.0到1.1
                $this->rand_arr1=range(3501,7000);//35%是1.1到1.2
                $this->rand_arr2=range(7001,10000);//30%是1.2到1.95
                $this->simplered=666;
            }
             
        public function redval()
            {
                $maxrp=$this->maxred();//隨機(jī)最大紅包金額
                if($maxrp!=$this->simplered)
                    {
                        if(in_array($this->rid,$this->rand_arr))
                            {
                                $red_val=$this->red_config[0];
                                $min=$red_val[&#39;min&#39;]*100;
                                $max=$red_val[&#39;max&#39;]*100;
                                $this->red=mt_rand($min,$max);
                                $this->red=$this->red/100;
                            }
                            elseif(in_array($this->rid,$this->rand_arr1))
                                {
                                    $red_val=$this->red_config[1];
                                    $min=$red_val[&#39;min&#39;]*100;
                                    $max=$red_val[&#39;max&#39;]*100;
                                    $red=mt_rand($min,$max);
                                    $this->red=$this->red/100;
                                }
                                elseif(in_array($this->rid,$this->rand_arr2))
                                    {
                                        $red_val=$this->red_config[2];
                                        $min=$red_val[&#39;min&#39;]*100;
                                        $max=$red_val[&#39;max&#39;]*100;
                                        $this->red=mt_rand($min,$max);
                                        $this->red=$this->red/100;
                                    }
                    }
                    else
                        {
                            $this->red=$maxrp;
                        }
                return $this->red?$this->red:1;
            }
                 
        protected function maxred()
            {
                $rid=mt_rand(1,100000);
                $rid1=mt_rand(1,100000);
                $red=0;
                $dff=$rid-$rid1;
                 
                if($dff > 0)
                    {
                        if(($rid1%$rid1)==$this->simplered)
                            {
                                $red=$this->simplered;
                            }
                    }
                    else
                        {
                            if(($rid1%$rid)==$this->simplered)
                                {
                                    $red=$this->simplered;
                                }
                        }
                         
                return $red;
            }
    }
 
?>

<?php
namespace RedClient\Redpack;
/*********
 
    先在公共平臺配置授權(quán)的域名；
    然后才能通過，
    網(wǎng)頁授權(quán)方式獲取微信用戶基本信息
     
    網(wǎng)頁授權(quán)流程分為四步： 
 
    1.引導(dǎo)用戶進(jìn)入授權(quán)頁面同意授權(quán)，獲取code 
    2.通過code換取網(wǎng)頁授權(quán)access_token（與基礎(chǔ)支持中的access_token不同） 
    3.如果需要，開發(fā)者可以刷新網(wǎng)頁授權(quán)access_token，避免過期 
    4.通過網(wǎng)頁授權(quán)access_token和openid獲取用戶基本信息 
 
**********/
class Oauth
    {
        protected $appid=&#39;&#39;;
        protected $redirect_uri=&#39;&#39;;
        protected $state=&#39;&#39;;//mt_rand(100,999);
        protected $appsecret=&#39;&#39;;
        protected $data=array(&#39;flag&#39;=>0,&#39;msg&#39;=>&#39;&#39;,&#39;data&#39;=>&#39;&#39;);
         
         
        public function __construct()
            {
                $this->appid=&#39;appid&#39;;//
                $this->appsecret=&#39;secret&#39;;//;
                $this->state=mt_rand(100,999);
            }
             
        //引導(dǎo)用戶訪問鏈接處理函數(shù) 
        public function index($redirect_uri)
            {
                $this->redirect_uri=urlencode($redirect_uri);//微信自動(dòng)跳轉(zhuǎn)到$redirect_uri
                header(&#39;location:https://open.weixin.qq.com/connect/oauth2/authorize?appid=&#39;.$this->appid.&#39;&redirect_uri=&#39;.$this->redirect_uri.&#39;/oauth.php&response_type=code&scope=snsapi_userinfo&state=&#39;.$this->state.&#39;&connect_redirect=1#wechat_redirect&#39;);
            }
             
        public function getCode($code=&#39;&#39;,$state=&#39;&#39;,$token=&#39;&#39;,$webToken=&#39;&#39;)
            {
                $data=array(
                    &#39;errorno&#39;=>&#39;&#39;,
                    &#39;errormsg&#39;=>&#39;&#39;,
                    &#39;data&#39;=>&#39;&#39;
                );
                 
                if(empty($code))
                    {
                        $this->data[&#39;flag&#39;]=0;
                        $this->data[&#39;msg&#39;]=&#39;授權(quán)失??！&#39;;
                    }
                    else
                        {   /* 
                                 
                                1獲取webtoken
                                2獲取reflash_token
                                3獲取用戶信息 
                            */
  $token_url = &#39;https://api.weixin.qq.com/sns/oauth2/access_token?appid=&#39;.$this->appid.&#39;&secret=&#39;.$this->appsecret.&#39;&code=&#39;.$code.&#39;&grant_type=authorization_code&#39;;
                         $token = json_decode(file_get_contents($token_url));
                             
                            if (isset($token->errcode)) 
                                {
                                    $data[&#39;errorno&#39;]=$token->errcode;
                                    $data[&#39;errormsg&#39;]=$token->errmsg;
                                }
                                else
                                    {
  $access_token_url = &#39;https://api.weixin.qq.com/sns/oauth2/refresh_token?appid=&#39;.$this->appid.&#39;&grant_type=refresh_token&refresh_token=&#39;.$token->refresh_token;
                                        //轉(zhuǎn)成對象
                                        $accessToken = json_decode(file_get_contents($access_token_url));
                                         
                                        if (isset($accessToken->errcode)) 
                                            {
                                                $data[&#39;errorno&#39;]=$token->errcode;
                                                $data[&#39;errormsg&#39;]=$token->errmsg;
                                            }
                                            else
                                                {
     $user_info_url = &#39;https://api.weixin.qq.com/sns/userinfo?access_token=&#39;.$accessToken->access_token.&#39;&openid=&#39;.$accessToken->openid.&#39;&lang=zh_CN&#39;;
                                                    //轉(zhuǎn)成對象
                                                    $userInfo = json_decode(file_get_contents($user_info_url));
                                                     
                                                    if (isset($userInfo->errcode)) 
                                                        {
                                                            $data[&#39;errorno&#39;]=$token->errcode;
                                                            $data[&#39;errormsg&#39;]=$token->errmsg;
                                                        }
                                                        else
                                                            {
                                                                $data[&#39;data&#39;]=$userInfo;
                                                            }
                                                }
                                    }
                        }
                return $data;
            }
             
    }
 
?>

<?php
/******
 
    用于企業(yè)向微信用戶個(gè)人發(fā)現(xiàn)金紅包
    目前支持向指定微信用戶的openid發(fā)放指定金額紅包。
    （獲取openid參見微信公眾平臺開發(fā)者文檔：
    網(wǎng)頁授權(quán)獲取用戶基本信息）
     
****/
namespace RedClient\Redpack;
 
class SendRedPack
    {
        private $config=array(
            &#39;nonce_str&#39;=>&#39;&#39;,//隨機(jī)字符串，不長于32位
            &#39;sign&#39;=>&#39;&#39;,//簽名
            &#39;mch_billno&#39;=>&#39;&#39;,//商戶訂單號
            &#39;mch_id&#39;=>&#39;1111sdfsafsaddf&#39;,//微信支付分配的商戶號
            &#39;wxappid&#39;=>&#39;sddafdsadfdsafdsdd&#39;,//微信分配的公眾賬號ID
            &#39;send_name&#39;=>&#39;&#39;,//紅包發(fā)送者名稱
            &#39;re_openid&#39;=>&#39;&#39;,//接受紅包的用戶,用戶在wxappid下的openid
            &#39;total_amount&#39;=>&#39;&#39;,//付款金額，單位分
            &#39;total_num&#39;=>&#39;&#39;,//紅包發(fā)放總?cè)藬?shù)
            &#39;wishing&#39;=>&#39;&#39;,//紅包祝福語
            &#39;client_ip&#39;=>&#39;&#39;,//調(diào)用接口的機(jī)器Ip地址
            &#39;act_name&#39;=>&#39;&#39;,//活動(dòng)名稱
            &#39;remark&#39;=>&#39;&#39;,//  備注信息
        );
         
        protected $key=&#39;&#39;;
        protected $url=&#39;https://api.mch.weixin.qq.com/mmpaymkttransfers/sendredpack&#39;;
        protected $requestXml=&#39;&#39;;
         
        //設(shè)置必要參數(shù)
        public function setFields($conf=array())
            {
                foreach($conf as $k=>$v)
                    {
                        if(isset($this->config[$k]) && !empty($v))
                            {
                                $this->config[$k]=$v;
                            }
                    }
                $this->config[&#39;mch_billno&#39;]=$this->billno();
                $this->config[&#39;nonce_str&#39;]=$this->createNonceStr();
                $this->createSign($conf);
                $this->createXml();
                //echo $this->requestXml;
            }
         
        protected function billno()
            {
                return $this->config[&#39;mch_id&#39;].time().md5(mt_rand(1000,9999));
            }
         
        /* //檢查必要參數(shù)是否為空！
        public function checkConfig()
            {
                $flag=true;
                foreach($this->config as $k=>$v)
                    {
                        if(empty($v))
                            {
                                $flag=false;
                                break;
                            }
                    }
            } */
         
        //隨機(jī)字符串，不長于32位
        public function createNonceStr( $len=32 )
            {
                $strs = "abcdefghijklmnopqrstuvwxyz0123456789";
                $str ="";
                $len=$len<=32?$len:32;
                for ( $i = 0; $i < $len; $i++ )
                    {
                      $str.= substr($strs, mt_rand(0, strlen($strs)-1), 1);
                    }
                return $str;
            }
             
        //格式化參數(shù)
        public function formatParam($config=array(),$flag=1)
            {
                $format=&#39;&#39;;
                if(!empty($config))
                    {
                        ksort($config);
                        foreach($config as $k=>$v)
                            {
                                if($flag)
                                    {
                                        $v=urlencode($v);
                                    }
                                     
                                    if($flag==0 && strtolower($k)==&#39;sign&#39;)
                                        {
                                            continue;
                                        }
                                $format.=$k.&#39;=&#39;.$v.&#39;&&#39;;
                            }
                        $format=trim($format,&#39;&&#39;);
                    }
                return $format;
            }
             
        //創(chuàng)建SIGNATURE  
        protected function createSign($config)
            {
                $format=$this->formatParam($config,0);
                $format.=&#39;&key=&#39;.$this->key;
                $signature=strtoupper(md5($format));
                $this->config[&#39;sign&#39;]=$signature;
                return true;//$signature;
            }
             
        //創(chuàng)建xml格式數(shù)據(jù)
        protected function createXml()
            {
                $xml=&#39;<xml>&#39;;
                foreach($this->config as $k=>$v)
                    {
                        if(!empty($v))
                            {
                                $xml.=&#39;<&#39;.$k.&#39;><![CDATA[&#39;.$v.&#39;]]></&#39;.$k.&#39;>&#39;;
                            }
                    }
                $xml.=&#39;</xml>&#39;;
                $this->requestXml=$xml;
            }
         
        //XML格式數(shù)據(jù)轉(zhuǎn)換為數(shù)組
        public function createArray($xml=&#39;&#39;)
            {
                $arr = json_decode(json_encode(simplexml_load_string($xml, &#39;SimpleXMLElement&#39;, LIBXML_NOCDATA)), true);
                return $arr;
            }
         
        //發(fā)送紅包
        public function requestXml($timeout=30,$header=array())
            {
                $ch = curl_init();
                //超時(shí)時(shí)間
                curl_setopt($ch,CURLOPT_TIMEOUT,$timeout);
                curl_setopt($ch,CURLOPT_RETURNTRANSFER, 1);
                curl_setopt($ch,CURLOPT_URL,$this->url);
                curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,false);
                curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,false);
                //默認(rèn)格式為PEM，可以注釋
                curl_setopt($ch,CURLOPT_SSLCERTTYPE,&#39;PEM&#39;);
                curl_setopt($ch,CURLOPT_SSLCERT,dirname(__FILE__).&#39;/apiclient_cert.pem&#39;);//pem證書地址
                //默認(rèn)格式為PEM，可以注釋
                curl_setopt($ch,CURLOPT_SSLKEYTYPE,&#39;PEM&#39;);
                curl_setopt($ch,CURLOPT_SSLKEY,dirname(__FILE__).&#39;/apiclient_key.pem&#39;);//key證書地址
                curl_setopt($ch,CURLOPT_CAINFO,&#39;PEM&#39;);
                curl_setopt($ch,CURLOPT_CAINFO,dirname(__FILE__).&#39;/rootca.pem&#39;);//CA證書地址
                //兩個(gè)文件合成一個(gè).pem文件
                //curl_setopt($ch,CURLOPT_SSLCERT,getcwd().&#39;/all.pem&#39;);
                if( count($header) >= 1 )
                    {
                        curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
                    }
                curl_setopt($ch,CURLOPT_POST, 1);
                curl_setopt($ch,CURLOPT_POSTFIELDS,$this->requestXml);
                $data = curl_exec($ch);
                var_dump($data);
                if($data)
                    {
                        curl_close($ch);
                        var_dump($data);
                        return $data;
                    }
                    else 
                        {
                            $error = curl_errno($ch);
                            echo &#39;ERROR:&#39;.$error;
                            curl_close($ch);
                            return false;
                        }
            }
         
        //返回非空值，非NULL
        public function notEmpty($val=&#39;&#39;)
            {
                $return=&#39;&#39;;
                if(null !=$val && strlen($val) != 0)
                    {
                        $return=$val;
                    }
                return $return?$return:false;
            }
         
    }
 
 
?>

<?php
namespace RedClient\Redpack;
class WeiXinInfo
    {
        private $AppID=&#39;appid&#39;;
        private $AppSecret=&#39;secret&#39;;
        private $grant_type=&#39;client_credential&#39;;
         
        private $url=&#39;https://api.weixin.qq.com/cgi-bin/token&#39;;
         
        public function __construct()
            {
                //$arr=array(&#39;access_token&#39;=>&#39;1&#39;,&#39;expires&#39;=>&#39;7200&#39;);
                 
            }
             
        //設(shè)置獲取ACCESSTOKEN 的URL
        public function setUrl()
            {
                return $this->url=$this->url.&#39;?grant_type=&#39;.$this->grant_type.&#39;&appid=&#39;.$this->AppID.&#39;&secret=&#39;.$this->AppSecret;
            }
         
        //獲取APPID,SECRET
        public function getAppid()
            {
                $sql=&#39;select appid,secret from ly_appid where flag=1&#39;;
                $model=M();
                $result=$model->query($sql);
                if(!empty($result))
                    {
                        $this->AppID=$result[0][&#39;appid&#39;];
                        $this->AppSecret=$result[0][&#39;secret&#39;];
                        return $result[0];
                    }
            }
             
        public function object2array($object) 
            {
              if (is_object($object)) 
                  {
                    foreach ($object as $key => $value) 
                        {
                          $array[$key] = $value;
                        }
                  }
                  else 
                      {
                        $array = $object;
                      }
              return $array;
            }
             
        //檢驗(yàn)URL有效
        public function checkUrl()
            {
                $signature=isset($_GET[&#39;signature&#39;])?strip_tags(trim($_GET[&#39;signature&#39;])):&#39;&#39;;
                $timestamp=isset($_GET[&#39;timestamp&#39;])?strip_tags(trim($_GET[&#39;timestamp&#39;])):&#39;&#39;;
                $nonce=isset($_GET[&#39;nonce&#39;])?strip_tags(trim($_GET[&#39;nonce&#39;])):&#39;&#39;;
                $echostr=isset($_GET[&#39;echostr&#39;])?$_GET[&#39;echostr&#39;]:&#39;&#39;;
                if(!empty($signature) && !empty($timestamp) && !empty($nonce))
                    {
                        if($this->checkSign($signature,$timestamp,$nonce))
                            {
                                echo $echostr;
                                return true;
                            }
                            else
                                {
                                    return false;
                                }
                    }
            }  
             
        //驗(yàn)證SIGNATURE是否有效
        private function checkSign($sign,$timestamp,$nonce)
            {
                $token=$this->getAccessToken();
                //$token=$this->object2array($token);
                $sign_arr=array($token,$timstamp,$nonce);
                sort($sign_arr,SORT_STRING);
                $signStr=implode($sign_arr);
                $signStr=sha1($signStr);
                if(strtoupper($signStr)==strtoupper($sign))
                    {
                        return true;
                    }
                return false;
            }
             
        //通過微信接口獲取微信Access_Token   
        public function getAccessToken()
            {
                $token=&#39;&#39;;
                $this->setUrl();
                $check=$this->checkToken();
                 
                if(session(&#39;?&#39;.md5(&#39;getaccesstoken&#39;)) && $check)
                    {
                        $tokens=session(md5(&#39;getaccesstoken&#39;));
                        $token=$tokens->access_token;
                    }
                    else
                        {
                            $result=file_get_contents($this->url);
                            $result=json_decode($result);
                            $token=$result->access_token;
                            $result->expires_in=$result->expires_in+time();
                            session(md5(&#39;getaccesstoken&#39;),$result);
                        }
                         
                return $token;
            }
         
        //檢查微信ACCESS_TOKEN是否有效
        public function checkToken()
            {
                if(session(&#39;?&#39;.md5(&#39;getaccesstoken&#39;)) && session(md5(&#39;getaccesstoken&#39;)))
                    {
                        $time=time();
                        $token=session(md5(&#39;getaccesstoken&#39;));
                         
                        if($token->expires_in-$time > 30)
                            {
                                return true;
                            }
                            else
                                {
                                    session(md5(&#39;getaccesstoken&#39;),null);
                                }
                    }
                return false;
            }
             
        //保存微信ACCESSTOKEN到數(shù)據(jù)庫  
        public function saveAccessToken()
            {
                $token=$this->getAccessToken();
                $sql=&#39;select `id`,`rate`,token,ex_time,createtime from ly_token where token="&#39;.$token.&#39;" where appid="&#39;.$this->AppID.&#39;" AND secret="&#39;.$this->AppSecret.&#39;"&#39;;
                $model=M();
                $result=$model->query($sql);
                if(!empty($result))
                    {
                        $time=time();
                        $expires=$time-$result[0][&#39;createtime&#39;];
                        if($result[0][&#39;ex_time&#39;]-$expires > 0)
                            {
                                return $result[0][&#39;token&#39;];                       
                            }
                            else
                                {
                                    $token=$this->getAccessToken();
                                    if(!empty($token))
                                        {
                                            $token=json_decode($token);
                                            if(!isset($token[&#39;errcode&#39;]) or !$token[&#39;errcode&#39;])
                                                {
                                                    if(isset($token[&#39;access_token&#39;]) && $token[&#39;access_token&#39;])
                                                        {
                                                            $data[&#39;access_token&#39;]=$token[&#39;access_token&#39;];
                                                            $data[&#39;createtime&#39;]=$time;
                                                            $data[&#39;ex_time&#39;]=$token[&#39;expires_in&#39;];
                                                            $data[&#39;rate&#39;]=$result[0][&#39;rate&#39;]+1;
                                                            //$sql=&#39;update ly_token set token="&#39;.$token[&#39;access_token&#39;].&#39;" ,createtime=&#39;.$time.&#39;,ex_time=&#39;.$token[&#39;expires_in&#39;].&#39; where `id`=&#39;.$result[0][&#39;id&#39;];
                                                            $model=M(&#39;token&#39;);
                                                            $update=$model->where(&#39;`id`=&#39;.$result[0][&#39;id&#39;])->save($data);
                                                            if($update)
                                                            {
                                                                return $token[&#39;access_token&#39;];
                                                            }
                                                        }
                                                }
                                                else
                                                    {//微信返回的錯(cuò)誤信息
                                                                $data[&#39;errcode&#39;]=$token[&#39;errcode&#39;];
                                                                $data[&#39;errmsg&#39;]=$token[&#39;errmsg&#39;];
                                                                $data[&#39;appid&#39;]=$this->AppID;
                                                                $data[&#39;secret&#39;]=$this->AppSecret;
                                                                $data[&#39;createtime&#39;]=time();
                                                                $data[&#39;rate&#39;]=$result[0][&#39;rate&#39;]+1;
                                                                $ein=$model->where(&#39;`id`=&#39;.$result[0][&#39;id&#39;])->save($data);
                                                                if($ein)
                                                                    {
                                                                        return false;
                                                                    }
                                                    }
                                        }
                                }
                    }
                    else
                        {//新插入數(shù)據(jù)庫保存
                            $token=$this->getAccessToken();
                            $model=M(&#39;token&#39;);
                            if(!empty($token))
                                        {
                                            $data=array();
                                            $token=json_decode($token);
                                            if(!isset($token[&#39;errcode&#39;]) or !$token[&#39;errcode&#39;])
                                                {
                                                    if(isset($token[&#39;access_token&#39;]) && $token[&#39;access_token&#39;])
                                                        {
                                                            $data[&#39;access_token&#39;]=$token[&#39;access_token&#39;];
                                                            $data[&#39;createtime&#39;]=$time;
                                                            $data[&#39;ex_time&#39;]=$token[&#39;expires_in&#39;];
                                                            //$sql=&#39;insert into ly_token() vlaues()&#39;;
                                                            $data[&#39;rate&#39;]=1;
                                                            $in=$model->data($data)->add();
                                                            if($ein)
                                                            {
                                                                $token[&#39;access_token&#39;];
                                                            }
                                                        }
                                                }
                                                else
                                                    {//微信返回的錯(cuò)誤信息
                                                        $data[&#39;errcode&#39;]=$token[&#39;errcode&#39;];
                                                        $data[&#39;errmsg&#39;]=$token[&#39;errmsg&#39;];
                                                        $data[&#39;appid&#39;]=$this->AppID;
                                                        $data[&#39;secret&#39;]=$this->AppSecret;
                                                        $data[&#39;createtime&#39;]=time();
                                                        $data[&#39;rate&#39;]=1;
                                                        $ein=$model->data($data)->add();
                                                        if($ein)
                                                            {
                                                                return false;
                                                            }
                                                    }
                                        }
                        }
                return false;
            }  
             
             
             
             
             
    }
 
?>

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