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PHP封装的微信公众平台接口开发操作类完整示例
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本文实例讲述了PHP封装的微信公众平台接口开发操作类。分享给大家供大家参考，具体如下：

示例调用 index.php

?php
/**
* Author: 惹妹子生气了
* Date: 2017-08-10
*/
class MpWeixin
{
  public $config;
  public $class_obj;
  public $is_check_signature = false;
  public function __construct()
  {
    //获取配置
    $this->config = array('appid'=>'dfdfdfdfdf', 'secret'=>'343434343434');
    $echostr = isset($_GET['echostr']) ? $_GET['echostr'] : ''; // 是否来自于微信的服务器配置验证
    if ($echostr) {
      $this->is_check_signature = true;
    }else{
      $this->is_check_signature = false;
      include_once "mpweixin.class.php";
      $this->class_obj = new mpweixin($this->config); //实例化对应的插件
    }
  }
  /**
   * 服务器地址(用户消息和开发者需要的事件推送，会被转发到该URL中)
   */
  public function index()
  {
    if ($this->is_check_signature) {
      $this->valid();
    }else{
      $this->class_obj->responseMsg();
    }
  }
  /**
   * 开发者对签名（即signature）的效验，来判断此条消息的真实性
   */
  public function valid()
  {
    $echoStr = $this->checkSignature();
    if($echoStr){
      header('content-type:text');
      exit($echoStr);
    }
  }
  /**
  * 验证是否来自于微信
  * @return [type] [description]
  */
  public function checkSignature()
  {
    //微信会发送4个参数到我们的服务器后台 签名 时间戳 随机字符串 随机数
    $signature = $_GET['signature']; // 签名
    $timestamp = $_GET['timestamp']; // 时间戳
    $echoStr = $_GET['echostr']; // 随机字符串
    $nonce = $_GET['nonce']; // 随机数
    if ($signature  $timestamp  $echoStr  $nonce) {
      // 微信公众号基本配置中的token
      $token = TOKEN;
      //将token、timestamp、nonce按字典序排序
      $tmpArr = array($token, $timestamp, $nonce);
      sort($tmpArr, SORT_STRING);
      // 将三个参数字符串拼接成一个字符串进行sha1加密
      $tmpStr = implode($tmpArr);
      $tmpStr = sha1($tmpStr);
      // 开发者获得加密后的字符串可与signature对比，标识该请求来源于微信
      if($tmpStr == $signature){
        return $echoStr;
      } else {
        return false;
      }
    }
  }
}
?>

PHP类文件 mpweixin.class.php

?php
/*
* 微信公众号插件
* 开发者模式，请先注册微信开放平台账号，然后启动开发模式
*/
class mpweixin{
  public $appid;
  public $secret;
  public function __construct($config){
    $this->appid = $config['appid'];
    $this->secret = $config['secret'];
  }
  /* ----------------------------------响应----------------------------- */
  /**
   * 响应消息
   */
  public function responseMsg()
  {
    $postStr = file_get_contents("php://input");
    if (!empty($postStr)){
      $this->logger("R \r\n".$postStr);
      $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
      $RX_TYPE = trim($postObj->MsgType);
      switch ($RX_TYPE)
      {
        // 事件
        case "event":
          $result = $this->receiveEvent($postObj);
          break;
        // 文本
        case "text":
          if (strstr($postObj->Content, "第三方")){
            $result = $this->relayPart3("http://www.fangbei.org/test.php".'?'.$_SERVER['UERY_STRING';], $postStr);
          }else{
            $result = $this->receiveText($postObj);
          }
          break;
        // 图片
        case "image":
          $result = $this->receiveImage($postObj);
          break;
        // 地理位置
        case "location":
          $result = $this->receiveLocation($postObj);
          break;
        // 语音
        case "voice":
          $result = $this->receiveVoice($postObj);
          break;
        // 视频
        case "video":
          $result = $this->receiveVideo($postObj);
          break;
        // 链接
        case "link":
          $result = $this->receiveLink($postObj);
          break;
        default:
          $result = "unknown msg type: ".$RX_TYPE;
          break;
      }
      $this->logger("T \r\n".$result);
      echo $result;
    }else {
      echo "";
      exit;
    }
  }
  /* ----------------------------------接收----------------------------- */
  /**
   * 接收事件消息
   */
  private function receiveEvent($object)
  {
    $content = "";
    switch ($object->Event)
    {
      // 关注时的事件推送
      case "subscribe":
        $content = "欢迎关注方倍工作室";
        $content .= (!empty($object->EventKey)) ? ("\n来自二维码场景".str_replace("qrscene_","",$object->EventKey)) : "";
        break;
      // 取消关注事件
      case "unsubscribe":
        $content = "取消关注";
        break;
      // 点击菜单拉取消息时的事件推送
      case "CLICK":
        switch ($object->EventKey)
        {
          case "COMPANY":
            $content = array();
            $content[] = array("Title"=>"方倍工作室", "Description"=>"", "PicUrl"=>"http://discuz.comli.com/weixin/weather/icon/cartoon.jpg";, "Url" =>"http://m.cnblogs.com/?u=txw1958";);
            break;
          default:
            $content = "点击菜单：".$object->EventKey;
            break;
        }
        break;
      // 点击菜单跳转链接时的事件推送
      case "VIEW":
        $content = "跳转链接 ".$object->EventKey;
        break;
      // 扫描带参数二维码场景，用户已关注时的事件推送
      case "SCAN":
        $content = "扫描场景 ".$object->EventKey;
        break;
      // 上报地理位置事件
      case "LOCATION":
        $content = "上传位置：纬度 ".$object->Latitude.";经度 ".$object->Longitude;
        break;
      // 扫码推事件且弹出“消息接收中”提示框的事件推送
      case "scancode_waitmsg":
        if ($object->ScanCodeInfo->ScanType == "qrcode"){
          $content = "扫码带提示：类型 二维码 结果：".$object->ScanCodeInfo->ScanResult;
        }else if ($object->ScanCodeInfo->ScanType == "barcode"){
          $codeinfo = explode(",",strval($object->ScanCodeInfo->ScanResult));
          $codeValue = $codeinfo[1];
          $content = "扫码带提示：类型 条形码 结果：".$codeValue;
        }else{
          $content = "扫码带提示：类型 ".$object->ScanCodeInfo->ScanType." 结果：".$object->ScanCodeInfo->ScanResult;
        }
        break;
      // 扫码推事件的事件推送
      case "scancode_push":
        $content = "扫码推事件";
        break;
      // 弹出系统拍照发图的事件推送
      case "pic_sysphoto":
        $content = "系统拍照";
        break;
      // 弹出微信相册发图器的事件推送
      case "pic_weixin":
        $content = "相册发图：数量 ".$object->SendPicsInfo->Count;
        break;
      // 弹出拍照或者相册发图的事件推送
      case "pic_photo_or_album":
        $content = "拍照或者相册：数量 ".$object->SendPicsInfo->Count;
        break;
      // 弹出地理位置选择器的事件推送
      case "location_select":
        $content = "发送位置：标签 ".$object->SendLocationInfo->Label;
        break;
      default:
        $content = "receive a new event: ".$object->Event;
        break;
    }
    if(is_array($content)){
      if (isset($content[0]['PicUrl'])){
        $result = $this->transmitNews($object, $content);
      }else if (isset($content['MusicUrl'])){
        $result = $this->transmitMusic($object, $content);
      }
    }else{
      $result = $this->transmitText($object, $content);
    }
    return $result;
  }
  /**
   * 接收文本消息
   */
  private function receiveText($object)
  {
    $keyword = trim($object->Content);
    //多客服人工回复模式
    if (strstr($keyword, "请问在吗") || strstr($keyword, "在线客服")){
      $result = $this->transmitService($object);
      return $result;
    }
    //自动回复模式
    if (strstr($keyword, "文本")){
      $content = "这是个文本消息";
    }else if (strstr($keyword, "表情")){
      $content = "中国：".$this->bytes_to_emoji(0x1F1E8).$this->bytes_to_emoji(0x1F1F3)."\n仙人掌：".$this->bytes_to_emoji(0x1F335);
    }else if (strstr($keyword, "单图文")){
      $content = array();
      $content[] = array("Title"=>"单图文标题", "Description"=>"单图文内容", "PicUrl"=>"http://discuz.comli.com/weixin/weather/icon/cartoon.jpg";, "Url" =>"http://m.cnblogs.com/?u=txw1958";);
    }else if (strstr($keyword, "图文") || strstr($keyword, "多图文")){
      $content = array();
      $content[] = array("Title"=>"多图文1标题", "Description"=>"", "PicUrl"=>"http://discuz.comli.com/weixin/weather/icon/cartoon.jpg";, "Url" =>"http://m.cnblogs.com/?u=txw1958";);
      $content[] = array("Title"=>"多图文2标题", "Description"=>"", "PicUrl"=>"http://d.hiphotos.bdimg.com/wisegame/pic/item/f3529822720e0cf3ac9f1ada0846f21fbe09aaa3.jpg";, "Url" =>"http://m.cnblogs.com/?u=txw1958";);
      $content[] = array("Title"=>"多图文3标题", "Description"=>"", "PicUrl"=>"http://g.hiphotos.bdimg.com/wisegame/pic/item/18cb0a46f21fbe090d338acc6a600c338644adfd.jpg";, "Url" =>"http://m.cnblogs.com/?u=txw1958";);
    }else if (strstr($keyword, "音乐")){
      $content = array();
      $content = array("Title"=>"最炫民族风", "Description"=>"歌手：凤凰传奇", "MusicUrl"=>"http://121.199.4.61/music/zxmzf.mp3";, "HQMusicUrl"=>"http://121.199.4.61/music/zxmzf.mp3";);
    }else{
      $content = date("Y-m-d H:i:s",time())."\nOpenID：".$object->FromUserName."\n技术支持 方倍工作室";
    }
    if(is_array($content)){
      if (isset($content[0])){
        $result = $this->transmitNews($object, $content);
      }else if (isset($content['MusicUrl'])){
        $result = $this->transmitMusic($object, $content);
      }
    }else{
      $result = $this->transmitText($object, $content);
    }
    return $result;
  }
  /**
   * 接收图片消息
   */
  private function receiveImage($object)
  {
    $content = array("MediaId"=>$object->MediaId);
    $result = $this->transmitImage($object, $content);
    return $result;
  }
  /**
   * 接收位置消息
   */
  private function receiveLocation($object)
  {
    $content = "你发送的是位置，经度为：".$object->Location_Y."；纬度为：".$object->Location_X."；缩放级别为：".$object->Scale."；位置为：".$object->Label;
    $result = $this->transmitText($object, $content);
    return $result;
  }
  /**
   * 接收语音消息
   */
  private function receiveVoice($object)
  {
    if (isset($object->Recognition)  !empty($object->Recognition)){
      $content = "你刚才说的是：".$object->Recognition;
      $result = $this->transmitText($object, $content);
    }else{
      $content = array("MediaId"=>$object->MediaId);
      $result = $this->transmitVoice($object, $content);
    }
    return $result;
  }
  /**
   * 接收视频消息
   */
  private function receiveVideo($object)
  {
    $content = array("MediaId"=>$object->MediaId, "ThumbMediaId"=>$object->ThumbMediaId, "Title"=>"", "Description"=>"");
    $result = $this->transmitVideo($object, $content);
    return $result;
  }
  /**
   * 接收链接消息
   */
  private function receiveLink($object)
  {
    $content = "你发送的是链接，标题为：".$object->Title."；内容为：".$object->Description."；链接地址为：".$object->Url;
    $result = $this->transmitText($object, $content);
    return $result;
  }
  /* ----------------------------------回复----------------------------- */
  /**
   * 回复文本消息
   */
  private function transmitText($object, $content)
  {
    if (!isset($content) || empty($content)){
      return "";
    }
    $xmlTpl =  "xml>
            ToUserName>![CDATA[%s]]>/ToUserName>
            FromUserName>![CDATA[%s]]>/FromUserName>
            CreateTime>%s/CreateTime>
            MsgType>![CDATA[text]]>/MsgType>
            Content>![CDATA[%s]]>/Content>
          /xml>";
    $result = sprintf($xmlTpl, $object->FromUserName, $object->ToUserName, time(), $content);
    return $result;
  }
  /**
   * 回复多客服消息
   */
  private function transmitService($object)
  {
    $xmlTpl =  "xml>
            ToUserName>![CDATA[%s]]>/ToUserName>
            FromUserName>![CDATA[%s]]>/FromUserName>
            CreateTime>%s/CreateTime>
            MsgType>![CDATA[transfer_customer_service]]>/MsgType>
          /xml>";
    $result = sprintf($xmlTpl, $object->FromUserName, $object->ToUserName, time());
    return $result;
  }
  /**
   * 回复图文消息
   */
  private function transmitNews($object, $newsArray)
  {
    if(!is_array($newsArray)){
      return "";
    }
    $itemTpl = "item>
            Title>![CDATA[%s]]>/Title>
            Description>![CDATA[%s]]>/Description>
            PicUrl>![CDATA[%s]]>/PicUrl>
            Url>![CDATA[%s]]>/Url>
          /item>";
    $item_str = "";
    foreach ($newsArray as $item){
      $item_str .= sprintf($itemTpl, $item['Title'], $item['Description'], $item['PicUrl'], $item['Url']);
    }
    $xmlTpl =  "xml>
            ToUserName>![CDATA[%s]]>/ToUserName>
            FromUserName>![CDATA[%s]]>/FromUserName>
            CreateTime>%s/CreateTime>
            MsgType>![CDATA[news]]>/MsgType>
            ArticleCount>%s/ArticleCount>
            Articles>$item_str/Articles>
          /xml>";
    $result = sprintf($xmlTpl, $object->FromUserName, $object->ToUserName, time(), count($newsArray));
    return $result;
  }
  /**
   * 回复音乐消息
   */
  private function transmitMusic($object, $musicArray)
  {
    if(!is_array($musicArray)){
      return "";
    }
    $itemTpl = "Music>
            Title>![CDATA[%s]]>/Title>
            Description>![CDATA[%s]]>/Description>
            MusicUrl>![CDATA[%s]]>/MusicUrl>
            HQMusicUrl>![CDATA[%s]]>/HQMusicUrl>
          /Music>";
    $item_str = sprintf($itemTpl, $musicArray['Title'], $musicArray['Description'], $musicArray['MusicUrl'], $musicArray['HQMusicUrl']);
    $xmlTpl =  "xml>
            ToUserName>![CDATA[%s]]>/ToUserName>
            FromUserName>![CDATA[%s]]>/FromUserName>
            CreateTime>%s/CreateTime>
            MsgType>![CDATA[music]]>/MsgType>
            $item_str
          /xml>";
    $result = sprintf($xmlTpl, $object->FromUserName, $object->ToUserName, time());
    return $result;
  }
  /**
   * 回复图片消息
   */
  private function transmitImage($object, $imageArray)
  {
    $itemTpl = "Image>
            MediaId>![CDATA[%s]]>/MediaId>
          /Image>";
    $item_str = sprintf($itemTpl, $imageArray['MediaId']);
    $xmlTpl =  "xml>
            ToUserName>![CDATA[%s]]>/ToUserName>
            FromUserName>![CDATA[%s]]>/FromUserName>
            CreateTime>%s/CreateTime>
            MsgType>![CDATA[image]]>/MsgType>
            $item_str
          /xml>";
    $result = sprintf($xmlTpl, $object->FromUserName, $object->ToUserName, time());
    return $result;
  }
  /**
   * 回复语音消息
   */
  private function transmitVoice($object, $voiceArray)
  {
    $itemTpl = "Voice>
            MediaId>![CDATA[%s]]>/MediaId>
          /Voice>";
    $item_str = sprintf($itemTpl, $voiceArray['MediaId']);
    $xmlTpl =  "xml>
            ToUserName>![CDATA[%s]]>/ToUserName>
            FromUserName>![CDATA[%s]]>/FromUserName>
            CreateTime>%s/CreateTime>
            MsgType>![CDATA[voice]]>/MsgType>
            $item_str
          /xml>";
    $result = sprintf($xmlTpl, $object->FromUserName, $object->ToUserName, time());
    return $result;
  }
  /**
   * 回复视频消息
   */
  private function transmitVideo($object, $videoArray)
  {
    $itemTpl = "Video>
            MediaId>![CDATA[%s]]>/MediaId>
            ThumbMediaId>![CDATA[%s]]>/ThumbMediaId>
            Title>![CDATA[%s]]>/Title>
            Description>![CDATA[%s]]>/Description>
          /Video>";
    $item_str = sprintf($itemTpl, $videoArray['MediaId'], $videoArray['ThumbMediaId'], $videoArray['Title'], $videoArray['Description']);
    $xmlTpl =  "xml>
            ToUserName>![CDATA[%s]]>/ToUserName>
            FromUserName>![CDATA[%s]]>/FromUserName>
            CreateTime>%s/CreateTime>
            MsgType>![CDATA[video]]>/MsgType>
            $item_str
          /xml>";
    $result = sprintf($xmlTpl, $object->FromUserName, $object->ToUserName, time());
    return $result;
  }
  /* ----------------------------------通用----------------------------- */
  /**
   * 回复第三方接口消息
   */
  private function relayPart3($url, $rawData)
  {
    $headers = array("Content-Type: text/xml; charset=utf-8");
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $rawData);
    $output = curl_exec($ch);
    curl_close($ch);
    return $output;
  }
  /**
   * 字节转Emoji表情
   */
  function bytes_to_emoji($cp)
  {
    if ($cp > 0x10000){    # 4 bytes
      return chr(0xF0 | (($cp  0x1C0000) >> 18)).chr(0x80 | (($cp  0x3F000) >> 12)).chr(0x80 | (($cp  0xFC0) >> 6)).chr(0x80 | ($cp  0x3F));
    }else if ($cp > 0x800){  # 3 bytes
      return chr(0xE0 | (($cp  0xF000) >> 12)).chr(0x80 | (($cp  0xFC0) >> 6)).chr(0x80 | ($cp  0x3F));
    }else if ($cp > 0x80){  # 2 bytes
      return chr(0xC0 | (($cp  0x7C0) >> 6)).chr(0x80 | ($cp  0x3F));
    }else{          # 1 byte
      return chr($cp);
    }
  }
  /**
   * 日志记录
   */
  private function logger($log_content)
  {
    if (isset($_SERVER['HTTP_APPNAME'])) {  //SAE
      sae_set_display_errors(false);
      sae_debug($log_content);
      sae_set_display_errors(true);
    } else if ($_SERVER['REMOTE_ADDR'] != "127.0.0.1") { //LOCAL
      $max_size = 1000000;
      $log_filename = "mpweixin.log.xml";
      if (file_exists($log_filename) and (abs(filesize($log_filename)) > $max_size)) {
        unlink($log_filename);
      }
      file_put_contents($log_filename, date('Y-m-d H:i:s')." ".$log_content."\r\n", FILE_APPEND);
    }
  }
  /**
   * 获取access_token
   */
  private function getAccessToken()
  {
    $token_url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credentialappid="; . $this->appid . "secret=" . $this->secret;
    $response = $this->get_contents($token_url);
    $params = array();
    $params = json_decode($response,true);
    if (isset($params['errcode']))
    {
      echo "h3>error:/h3>" . $params['errcode'];
      echo "h3>msg :/h3>" . $params['errmsg'];
      exit;
    }
    return $params['access_token'];
  }
  public function get_contents($url){
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
    curl_setopt($ch, CURLOPT_URL, $url);
    $response = curl_exec($ch);
    curl_close($ch);
    //-------请求为空
    if(empty($response)){
      exit("50001");
    }
    return $response;
  }
}
?>

更多关于PHP相关内容感兴趣的读者可查看本站专题：《PHP微信开发技巧汇总》、《PHP编码与转码操作技巧汇总》、《PHP网络编程技巧总结》、《php字符串(string)用法总结》、《PHP中json格式数据操作技巧汇总》及《PHP针对XML文件操作技巧总结》

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