PHP封装的微信公众平台接口开发操作类完整示例

<?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
/*
* 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_credential&appid="; . $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;
  }
}
?>