比较完整的微信开发php代码

<?php
  //封装成一个微信接口类
 
  class weixinapi
  {
    private $appid;
    private $appsecret; 
 
    //构造方法 初始化赋值
    public function __construct($appid="",$appsecret="")
    {
      $this->appid = $appid;
      $this->appsecret = $appsecret;
    }
 
    //验证服务器地址有效性
    public function valid()
    {
      if($this->checksignature())
      {
        $echostr = $_get['echostr'];//随机的字符串
        return $echostr;
      }
      else
      {
        return "error";
      }
    }
 
    //检查签名
    private function checksignature()
    {
      //一、接收微信服务器get方式提交过来的4个参数数据
 
      $signature = $_get['signature'];//微信加密签名
 
      $timestamp = $_get['timestamp'];//时间戳
 
      $nonce = $_get['nonce'];//随机数
 
      //二、加密/校验过程
      // 1. 将token、timestamp、nonce三个参数进行字典序排序；
      // bool sort ( array &$array [, int $sort_flags = sort_regular ] ) 对数组排序 
       
      $tmparr = array(token,$timestamp,$nonce);//将上面三个参数放到一个数组里面
      sort($tmparr,sort_string);
 
      // 2. 将三个参数字符串拼接成一个字符串进行sha1加密；
      $tmpstr = implode($tmparr); //将数组转化成字符串
 
      $signaturestr = sha1($tmpstr);
 
      // 3. 开发者获得加密后的字符串与signature对比。
      if($signaturestr == $signature)
      {
        return true;
      }
      else
      {
        return false;
      }
    }
 
    //响应消息
    public function responsemsg()
    {
      //接收微信服务器发送post请求到开发者服务器，携带的xml数据包
      $postdata = $globals['http_raw_post_data'];
 
      //处理xml数据包
      $xmlobj = simplexml_load_string($postdata,"simplexmlelement",libxml_nocdata);
 
      if(!$xmlobj)
      {
        echo "";
        exit;
      }
 
      //获取接收消息中的参数内容
      $tousername = $xmlobj->tousername;//开发者微信号
      $fromusername = $xmlobj->fromusername;//发送方的微信号（openid）
      $msgtype = $xmlobj->msgtype;//消息类型
      switch ($msgtype) {
        //接收文本消息
        case 'text':
          //获取文本消息的关键字
          $keyword = $this->receivetext($xmlobj); 
          //进行关键字回复
          switch($keyword)
          {
            case "w001":
            case "w001":
              return $this->replytext($xmlobj,"hi~你好");
              break;
            case "w002":
            case "w002":
              return $this->replytext($xmlobj,"hi~尴尬了");
              break;
            case "笑话":
              $key = "dee9ebc68fd5a61f67286063932afe56";
              return $this->replynews($xmlobj,$this->joke_text($key));
              break;
            default:
              $key = "dee9ebc68fd5a61f67286063932afe56";
              return $this->replynews($xmlobj,$this->joke_text($key));
              break;
          }    
          break;
        //接收图片消息
        case 'image':
          return $this->receiveimage($xmlobj);
          break;
        //接收事件推送
        case 'event':
          return $this->receiveevent($xmlobj);
          break;
      }      
    }
 
    //接收事件推送
    public function receiveevent($obj)
    {
      //接收事件类型
      $event = $obj->event;
      switch ($event)
      {
        //关注事件
        case 'subscribe':
          //下发欢迎消息
          $newsarr = array(
                  array(
                    "title"=>"做有价值的头条资讯！",
                    "description"=>"把握价值头条资讯，日常更加有谈资呢！",
                    "picurl"=>"http://jober.applinzi.com/news/img/news.png",
                    "url"=>"http://jober.applinzi.com/news/index.php"
                  )                
                );
          //回复图文消息
          return $this->replynews($obj,$newsarr); 
          break;
        //取消关注事件
        case 'unsubscribe':
          //账号的解绑操作等等
          break;
        //自定义菜单推送click事件
        case 'click':
          $eventkey = $obj->eventkey;//获取事件key值，与自定义菜单接口中key值对应
          switch ($eventkey) 
          {
            case 'old':
   
              $weixinarr = $this->history("da675ebc6a0d72920dca3f676122a693");
              $weixinarr = array_slice($weixinarr, 0,5);
              $newsarr = array();
 
              foreach ($weixinarr as $item) 
              {
                $newsarr = array(array(
                          "title" => $item['description'],
                          "description" => $item['title'],
                          "picurl" => "http://1.jober.applinzi.com/news/img/2.jpg",
                          "url" => "http://www.todayonhistory.com/"                          
                        ));
              }
              return $this->replynews($obj,$newsarr);
              break;
          }
        break;
      }
    }
 
    //接收文本消息
    public function receivetext($obj)
    {
      $content = trim($obj->content);//文本消息的内容
      return $content;
    }
 
    //接收图片消息
    public function receiveimage($obj)
    {
      $picurl = $obj->picurl;//图片的链接
      $mediaid = $obj->mediaid;//图片消息媒体id
      return $this->replyimage($obj,$mediaid);
    }
 
    //回复图片消息
    public function replyimage($obj,$mediaid)
    {
      $replyxml = "<xml>
              <tousername><![cdata[%s]]></tousername>
              <fromusername><![cdata[%s]]></fromusername>
              <createtime>%s</createtime>
              <msgtype><![cdata[image]]></msgtype>
              <image>
                <mediaid><![cdata[%s]]></mediaid>
              </image>
            </xml>";
      return sprintf($replyxml,$obj->fromusername,$obj->tousername,time(),$mediaid);
           
    }
 
    //回复文本消息
    public function replytext($obj,$content)
    {
      $replyxml = "<xml>
              <tousername><![cdata[%s]]></tousername>
              <fromusername><![cdata[%s]]></fromusername>
              <createtime>%s</createtime>
              <msgtype><![cdata[text]]></msgtype>
              <content><![cdata[%s]]></content>
            </xml>";
      return sprintf($replyxml,$obj->fromusername,$obj->tousername,time(),$content);
    }
     
    //回复图文消息
    public function replynews($obj,$newsarr)
    {
      //判断是否为数组类型
      if(!is_array($newsarr))
      {
        return;
      }
      // 判断数组是否为空数组
      if(!$newsarr)
      {
        return;
      }
      $itemstr = "";
      //定义item模板
      $itemxml = "<item>
              <title><![cdata[%s]]></title> 
              <description><![cdata[%s]]></description>
              <picurl><![cdata[%s]]></picurl>
              <url><![cdata[%s]]></url>
            </item>";
      foreach($newsarr as $item)
      {
        $itemstr .= sprintf($itemxml,$item['title'],$item['description'],$item['picurl'],$item['url']);
      }
      $replyxml = "<xml>
              <tousername><![cdata[%s]]></tousername>
              <fromusername><![cdata[%s]]></fromusername>
              <createtime>%s</createtime>
              <msgtype><![cdata[news]]></msgtype>
              <articlecount>".count($newsarr)."</articlecount>
              <articles>".$itemstr."</articles>
            </xml>"; 
      return sprintf($replyxml,$obj->fromusername,$obj->tousername,time());     
    }
 
    //封装https请求（get和post）
   
    protected function https_request($url,$data=null)
    {
      //1、初始化curl
      $ch = curl_init();
 
      //2、设置传输选项
      curl_setopt($ch, curlopt_url, $url);//请求的url地址
      curl_setopt($ch,curlopt_returntransfer,1);//将请求的结果以文件流的形式返回
       
      if(!empty($data))
      {
        curl_setopt($ch,curlopt_post,1);//请求post方式
        curl_setopt($ch,curlopt_postfields,$data);//post提交的内容
      }
 
      //3、执行请求并处理结果
      $outopt = curl_exec($ch);
 
      //把json数据转化成数组
      $outoptarr = json_decode($outopt,true);
 
      //4、关闭curl
      curl_close($ch);
 
      //如果返回的结果$outopt是json数据，则需要判断一下
      if(is_array($outoptarr))
      {  
        return $outoptarr;
      }
      else
      {
        return $outopt;
      }      
    }
 
    public function juhe_weixin($key,$type)
    {
      $url ="http://v.juhe.cn/toutiao/index?type={$type}&key={$key}";
      $result = $this->https_request($url);
      if($result['error_code'] == 0)
      {
        return $result['result']['data'];
      }
      else
      {
        return array();
      }
    }
 
    //聚合数据-获取最新趣图
    public function joke_text($key,$pagesize=10)
    {
      $url = "http://japi.juhe.cn/joke/img/text.from?key={$key}&pagesize={$pagesize}";
      $jokearr = $this->https_request($url);
      $resultarr = $jokearr['result']['data'];
      // $content = $resultarr[0]['content'];
      // return $this->replytext($xmlobj,$content);
       
      $newsarr = array();
      //判断笑话接口是否获取数据
      if($jokearr['error_code'] == 0)
      {
        foreach($resultarr as $item)
        {
          $newsarr[] = array(
                "title"=>$item['content'],
                "description"=>$item['updatetime'],
                "picurl"=>$item['url'],
                "url"=>$item['url']
              );
        }        
      }
      return $newsarr;
    }
 
 
    //聚合数据-获取历史上的今天
       
    public function history($key)
    {
      $m = idate('m');
      $d = idate('d');
      $day = "{$m}/{$d}";
     
      $url = "http://v.juhe.cn/todayonhistory/queryevent.php?key={$key}&date={$day}";
      $historyarr = $this->https_request($url);
      $resultarr = $historyarr['result'];
      // $content = $resultarr['title'];
      // return $this->replytext($xmlobj,$content);
       
      $newsarr = array();
      //判断接口是否获取数据
      if($jokearr['error_code'] == 0)
      {
        foreach($resultarr as $item)
        {
          $newsarr[] = array(
                "title"=>$item['title'],
                "description"=>$item['date'],
                "picurl"=>"",
                "url"=>""
              );
        }        
      }
      return $newsarr;
    }
 
    public function fund($key)
    {
 
      $url = "http://japi.juhe.cn/jingzhi/query.from?key={$key}";
      $fundarr = $this->https_request($url);
      $resultarr = $fundarr['result'];
      // $content = $resultarr['title'];
      // return $this->replytext($xmlobj,$content);
       
      $newsarr = array();
      //判断接口是否获取数据
      if($jokearr['error_code'] == 0)
      {
        foreach($resultarr as $item)
        {
          $newsarr[] = array(
                "title"=>$item['day'],
                "description"=>$item['title'],
                "picurl"=>"",
                "url"=>"http://www.baidu.com"
              );
        }        
      }
      return $newsarr;
    }
 
    /**
      *获取基础支持里面的接口调用凭证access_token并缓存access_token
      *@return access_token string 接口凭证
    **/
    public function getaccesstoken()
    {
      //获取memcache缓存的access_token
      $access_token = $this->_memcache_get("access_token");
      //如果缓存的access_token失效
      if(!$access_token)
      {  
        //如果失效调用获取接口凭证来获取access_token
        $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid={$this->appid}&secret={$this->appsecret}";
        $outoptarr = $this->https_request($url);
        if(!isset($outoptarr['errcode']))
        {
          //memcache缓存access_token
          $this->_memcache_set("access_token",$outoptarr['access_token'],7000);
          return $outoptarr['access_token'];
        }
      }  
      return $access_token;
    }
 
    //初始化memcache
    private function _memcache_init()
    {
      $mmc = new memcache;
      $ret = $mmc -> connect();
      if ($ret == false) 
      {
        return;
      } 
      return $mmc;
    }
 
    //设置memcache
    private function _memcache_set($key,$value,$time=0)
    {
      $mmc = $this->_memcache_init();
      $mmc -> set($key,$value,0,$time);
    }
 
    //获取memcahce
    private function _memcache_get($key)
    {
      $mmc = $this->_memcache_init(); 
      return $mmc -> get($key);  
    }
 
    //自定义菜单创建
 
    public function menu_create($data)
    {
      $access_token = $this->getaccesstoken();
      //自定义菜单创建接口地址
      $url = "https://api.weixin.qq.com/cgi-bin/menu/create?access_token={$access_token}";
      return $this->https_request($url,$data);
    }
 
    //自定义菜单删除
    public function menu_delete()
    {
      $access_token = $this->getaccesstoken();
      $url = "https://api.weixin.qq.com/cgi-bin/menu/delete?access_token={$access_token}";
      return $this->https_request($url);
    }
  }
?>