PHP使用Face++接口开发微信公众平台人脸识别系统的方法_php实例

本文实例讲述了PHP使用Face++接口开发微信公众平台人脸识别系统的方法。分享给大家供大家参考。具体如下：

效果图如下：

具体步骤如下：

首先，先登录Face++的官网注册账号：官网链接
注册之后会获取到api_secret和api_key，这些在调用接口的时候需要用到。
然后接下来的就是使用PHP脚本调用API了。
在使用PHP开发微信公共平台的时候，推荐使用Github上的一款不错的框架：wechat-php-sdk
对于微信的常用接口做了一些封装，核心文件wechat.class.php如下：

<&#63;php 
/** 
 * 微信公众平台PHP-SDK, 官方API部分 
 * @author dodge <dodgepudding@gmail.com> 
 * @link https://github.com/dodgepudding/wechat-php-sdk 
 * @version 1.2 
 * usage: 
 *  $options = array( 
 *     'token'=>'tokenaccesskey', //填写你设定的key 
 *     'appid'=>'wxdk1234567890', //填写高级调用功能的app id 
 *     'appsecret'=>'xxxxxxxxxxxxxxxxxxx', //填写高级调用功能的密钥 
 *   ); 
 *  $weObj = new Wechat($options); 
 *  $weObj->valid(); 
 *  $type = $weObj->getRev()->getRevType(); 
 *  switch($type) { 
 *     case Wechat::MSGTYPE_TEXT: 
 *       $weObj->text("hello, I'm wechat")->reply(); 
 *       exit; 
 *       break; 
 *     case Wechat::MSGTYPE_EVENT: 
 *       .... 
 *       break; 
 *     case Wechat::MSGTYPE_IMAGE: 
 *       ... 
 *       break; 
 *     default: 
 *       $weObj->text("help info")->reply(); 
 *  } 
 *  //获取菜单操作: 
 *  $menu = $weObj->getMenu(); 
 *  //设置菜单 
 *  $newmenu = array( 
 *     "button"=> 
 *       array( 
 *         array('type'=>'click','name'=>'最新消息','key'=>'MENU_KEY_NEWS'), 
 *         array('type'=>'view','name'=>'我要搜索','url'=>'http://www.baidu.com'), 
 *         ) 
 *     ); 
 *  $result = $weObj->createMenu($newmenu); 
 */ 
class Wechat 
{ 
  const MSGTYPE_TEXT = 'text'; 
  const MSGTYPE_IMAGE = 'image'; 
  const MSGTYPE_LOCATION = 'location'; 
  const MSGTYPE_LINK = 'link'; 
  const MSGTYPE_EVENT = 'event'; 
  const MSGTYPE_MUSIC = 'music'; 
  const MSGTYPE_NEWS = 'news'; 
  const MSGTYPE_VOICE = 'voice'; 
  const MSGTYPE_VIDEO = 'video'; 
  const API_URL_PREFIX = 'https://api.weixin.qq.com/cgi-bin'; 
  const AUTH_URL = '/token&#63;grant_type=client_credential&'; 
  const MENU_CREATE_URL = '/menu/create&#63;'; 
  const MENU_GET_URL = '/menu/get&#63;'; 
  const MENU_DELETE_URL = '/menu/delete&#63;'; 
  const MEDIA_GET_URL = '/media/get&#63;'; 
  const QRCODE_CREATE_URL='/qrcode/create&#63;'; 
  const QR_SCENE = 0; 
  const QR_LIMIT_SCENE = 1; 
  const QRCODE_IMG_URL='https://mp.weixin.qq.com/cgi-bin/showqrcode&#63;ticket='; 
  const USER_GET_URL='/user/get&#63;'; 
  const USER_INFO_URL='/user/info&#63;'; 
  const GROUP_GET_URL='/groups/get&#63;'; 
  const GROUP_CREATE_URL='/groups/create&#63;'; 
  const GROUP_UPDATE_URL='/groups/update&#63;'; 
  const GROUP_MEMBER_UPDATE_URL='/groups/members/update&#63;'; 
  const CUSTOM_SEND_URL='/message/custom/send&#63;'; 
  const OAUTH_PREFIX = 'https://open.weixin.qq.com/connect/oauth2'; 
  const OAUTH_AUTHORIZE_URL = '/authorize&#63;'; 
  const OAUTH_TOKEN_PREFIX = 'https://api.weixin.qq.com/sns/oauth2'; 
  const OAUTH_TOKEN_URL = '/access_token&#63;'; 
  const OAUTH_REFRESH_URL = '/refresh_token&#63;'; 
  const OAUTH_USERINFO_URL = 'https://api.weixin.qq.com/sns/userinfo&#63;'; 
  private $token; 
  private $appid; 
  private $appsecret; 
  private $access_token; 
  private $user_token; 
  private $_msg; 
  private $_funcflag = false; 
  private $_receive; 
  public $debug = false; 
  public $errCode = 40001; 
  public $errMsg = "no access"; 
  private $_logcallback; 
  public function __construct($options) 
  { 
    $this->token = isset($options['token'])&#63;$options['token']:''; 
    $this->appid = isset($options['appid'])&#63;$options['appid']:''; 
    $this->appsecret = isset($options['appsecret'])&#63;$options['appsecret']:''; 
    $this->debug = isset($options['debug'])&#63;$options['debug']:false; 
    $this->_logcallback = isset($options['logcallback'])&#63;$options['logcallback']:false; 
  } 
  /** 
   * For weixin server validation 
   */  
  private function checkSignature() 
  { 
    $signature = isset($_GET["signature"])&#63;$_GET["signature"]:''; 
    $timestamp = isset($_GET["timestamp"])&#63;$_GET["timestamp"]:''; 
    $nonce = isset($_GET["nonce"])&#63;$_GET["nonce"]:''; 
    $token = $this->token; 
    $tmpArr = array($token, $timestamp, $nonce); 
    sort($tmpArr, SORT_STRING); 
    $tmpStr = implode( $tmpArr ); 
    $tmpStr = sha1( $tmpStr ); 
    if( $tmpStr == $signature ){ 
      return true; 
    }else{ 
      return false; 
    } 
  } 
  /** 
   * For weixin server validation 
   * @param bool $return 是否返回 
   */ 
  public function valid($return=false) 
  { 
    $echoStr = isset($_GET["echostr"]) &#63; $_GET["echostr"]: ''; 
    if ($return) { 
        if ($echoStr) { 
          if ($this->checkSignature())  
            return $echoStr; 
          else 
            return false; 
        } else  
          return $this->checkSignature(); 
    } else { 
        if ($echoStr) { 
          if ($this->checkSignature()) 
            die($echoStr); 
          else  
            die('no access'); 
        } else { 
          if ($this->checkSignature()) 
            return true; 
          else 
            die('no access'); 
        } 
    } 
    return false; 
  } 
  /** 
   * 设置发送消息 
   * @param array $msg 消息数组 
   * @param bool $append 是否在原消息数组追加 
   */ 
  public function Message($msg = '',$append = false){ 
      if (is_null($msg)) { 
        $this->_msg =array(); 
      }elseif (is_array($msg)) { 
        if ($append) 
          $this->_msg = array_merge($this->_msg,$msg); 
        else 
          $this->_msg = $msg; 
        return $this->_msg; 
      } else { 
        return $this->_msg; 
      } 
  } 
  public function setFuncFlag($flag) { 
      $this->_funcflag = $flag; 
      return $this; 
  } 
  private function log($log){ 
      if ($this->debug && function_exists($this->_logcallback)) { 
        if (is_array($log)) $log = print_r($log,true); 
        return call_user_func($this->_logcallback,$log); 
      } 
  } 
  /** 
   * 获取微信服务器发来的信息 
   */ 
  public function getRev() 
  { 
    if ($this->_receive) return $this; 
    $postStr = file_get_contents("php://input"); 
    $this->log($postStr); 
    if (!empty($postStr)) { 
      $this->_receive = (array)simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA); 
    } 
    return $this; 
  } 
  /** 
   * 获取微信服务器发来的信息 
   */ 
  public function getRevData() 
  { 
    return $this->_receive; 
  } 
  /** 
   * 获取消息发送者 
   */ 
  public function getRevFrom() { 
    if (isset($this->_receive['FromUserName'])) 
      return $this->_receive['FromUserName']; 
    else  
      return false; 
  } 
  /** 
   * 获取消息接受者 
   */ 
  public function getRevTo() { 
    if (isset($this->_receive['ToUserName'])) 
      return $this->_receive['ToUserName']; 
    else  
      return false; 
  } 
  /** 
   * 获取接收消息的类型 
   */ 
  public function getRevType() { 
    if (isset($this->_receive['MsgType'])) 
      return $this->_receive['MsgType']; 
    else  
      return false; 
  } 
  /** 
   * 获取消息ID 
   */ 
  public function getRevID() { 
    if (isset($this->_receive['MsgId'])) 
      return $this->_receive['MsgId']; 
    else  
      return false; 
  } 
  /** 
   * 获取消息发送时间 
   */ 
  public function getRevCtime() { 
    if (isset($this->_receive['CreateTime'])) 
      return $this->_receive['CreateTime']; 
    else  
      return false; 
  } 
  /** 
   * 获取接收消息内容正文 
   */ 
  public function getRevContent(){ 
    if (isset($this->_receive['Content'])) 
      return $this->_receive['Content']; 
    else if (isset($this->_receive['Recognition'])) //获取语音识别文字内容，需申请开通 
      return $this->_receive['Recognition']; 
    else 
      return false; 
  } 
  /** 
   * 获取接收消息图片 
   */ 
  public function getRevPic(){ 
    if (isset($this->_receive['PicUrl'])) 
      return $this->_receive['PicUrl']; 
    else  
      return false; 
  } 
  /** 
   * 获取接收消息链接 
   */ 
  public function getRevLink(){ 
    if (isset($this->_receive['Url'])){ 
      return array( 
        'url'=>$this->_receive['Url'], 
        'title'=>$this->_receive['Title'], 
        'description'=>$this->_receive['Description'] 
      ); 
    } else  
      return false; 
  } 
  /** 
   * 获取接收地理位置 
   */ 
  public function getRevGeo(){ 
    if (isset($this->_receive['Location_X'])){ 
      return array( 
        'x'=>$this->_receive['Location_X'], 
        'y'=>$this->_receive['Location_Y'], 
        'scale'=>$this->_receive['Scale'], 
        'label'=>$this->_receive['Label'] 
      ); 
    } else  
      return false; 
  } 
  /** 
   * 获取接收事件推送 
   */ 
  public function getRevEvent(){ 
    if (isset($this->_receive['Event'])){ 
      return array( 
        'event'=>$this->_receive['Event'], 
        'key'=>$this->_receive['EventKey'], 
      ); 
    } else  
      return false; 
  } 
  /** 
   * 获取接收语言推送 
   */ 
  public function getRevVoice(){ 
    if (isset($this->_receive['MediaId'])){ 
      return array( 
        'mediaid'=>$this->_receive['MediaId'], 
        'format'=>$this->_receive['Format'], 
      ); 
    } else  
      return false; 
  } 
  /** 
   * 获取接收视频推送 
   */ 
  public function getRevVideo(){ 
    if (isset($this->_receive['MediaId'])){ 
      return array( 
          'mediaid'=>$this->_receive['MediaId'], 
          'thumbmediaid'=>$this->_receive['ThumbMediaId'] 
      ); 
    } else 
      return false; 
  } 
  /** 
   * 获取接收TICKET 
   */ 
  public function getRevTicket(){ 
  if (isset($this->_receive['Ticket'])){ 
    return $this->_receive['Ticket']; 
  } else 
    return false; 
  } 
  /** 
   * 获取二维码的场景值 
   */ 
  public function getRevSceneId (){ 
    if (isset($this->_receive['EventKey'])){ 
      return str_replace('qrscene_','',$this->_receive['EventKey']); 
    } else{ 
      return false; 
    } 
  } 
  public static function xmlSafeStr($str) 
  {   
    return '<![CDATA['.preg_replace("/[\\x00-\\x08\\x0b-\\x0c\\x0e-\\x1f]/",'',$str).']]>';   
  }  
  /** 
   * 数据XML编码 
   * @param mixed $data 数据 
   * @return string 
   */ 
  public static function data_to_xml($data) { 
    $xml = ''; 
    foreach ($data as $key => $val) { 
      is_numeric($key) && $key = "item id=\"$key\""; 
      $xml  .= "<$key>"; 
      $xml  .= ( is_array($val) || is_object($val)) &#63; self::data_to_xml($val) : self::xmlSafeStr($val); 
      list($key, ) = explode(' ', $key); 
      $xml  .= "</$key>"; 
    } 
    return $xml; 
  }   
  /** 
   * XML编码 
   * @param mixed $data 数据 
   * @param string $root 根节点名 
   * @param string $item 数字索引的子节点名 
   * @param string $attr 根节点属性 
   * @param string $id  数字索引子节点key转换的属性名 
   * @param string $encoding 数据编码 
   * @return string 
  */ 
  public function xml_encode($data, $root='xml', $item='item', $attr='', $id='id', $encoding='utf-8') { 
    if(is_array($attr)){ 
      $_attr = array(); 
      foreach ($attr as $key => $value) { 
        $_attr[] = "{$key}=\"{$value}\""; 
      } 
      $attr = implode(' ', $_attr); 
    } 
    $attr  = trim($attr); 
    $attr  = empty($attr) &#63; '' : " {$attr}"; 
    $xml  = "<{$root}{$attr}>"; 
    $xml  .= self::data_to_xml($data, $item, $id); 
    $xml  .= "</{$root}>"; 
    return $xml; 
  } 
  /** 
   * 设置回复消息 
   * Examle: $obj->text('hello')->reply(); 
   * @param string $text 
   */ 
  public function text($text='') 
  { 
    $FuncFlag = $this->_funcflag &#63; 1 : 0; 
    $msg = array( 
      'ToUserName' => $this->getRevFrom(), 
      'FromUserName'=>$this->getRevTo(), 
      'MsgType'=>self::MSGTYPE_TEXT, 
      'Content'=>$text, 
      'CreateTime'=>time(), 
      'FuncFlag'=>$FuncFlag 
    ); 
    $this->Message($msg); 
    return $this; 
  } 
  /** 
   * 设置回复音乐 
   * @param string $title 
   * @param string $desc 
   * @param string $musicurl 
   * @param string $hgmusicurl 
   */ 
  public function music($title,$desc,$musicurl,$hgmusicurl='') { 
    $FuncFlag = $this->_funcflag &#63; 1 : 0; 
    $msg = array( 
      'ToUserName' => $this->getRevFrom(), 
      'FromUserName'=>$this->getRevTo(), 
      'CreateTime'=>time(), 
      'MsgType'=>self::MSGTYPE_MUSIC, 
      'Music'=>array( 
        'Title'=>$title, 
        'Description'=>$desc, 
        'MusicUrl'=>$musicurl, 
        'HQMusicUrl'=>$hgmusicurl 
      ), 
      'FuncFlag'=>$FuncFlag 
    ); 
    $this->Message($msg); 
    return $this; 
  } 
  /** 
   * 设置回复图文 
   * @param array $newsData 
   * 数组结构: 
   * array( 
   *   [0]=>array( 
   *     'Title'=>'msg title', 
   *     'Description'=>'summary text', 
   *     'PicUrl'=>'http://www.domain.com/1.jpg', 
   *     'Url'=>'http://www.domain.com/1.html' 
   *   ), 
   *   [1]=>.... 
   * ) 
   */ 
  public function news($newsData=array()) 
  { 
    $FuncFlag = $this->_funcflag &#63; 1 : 0; 
    $count = count($newsData); 
    $msg = array( 
      'ToUserName' => $this->getRevFrom(), 
      'FromUserName'=>$this->getRevTo(), 
      'MsgType'=>self::MSGTYPE_NEWS, 
      'CreateTime'=>time(), 
      'ArticleCount'=>$count, 
      'Articles'=>$newsData, 
      'FuncFlag'=>$FuncFlag 
    ); 
    $this->Message($msg); 
    return $this; 
  } 
  /** 
   * 
   * 回复微信服务器, 此函数支持链式操作 
   * @example $this->text('msg tips')->reply(); 
   * @param string $msg 要发送的信息, 默认取$this->_msg 
   * @param bool $return 是否返回信息而不抛出到浏览器 默认:否 
   */ 
  public function reply($msg=array(),$return = false) 
  { 
    if (empty($msg))  
      $msg = $this->_msg; 
    $xmldata= $this->xml_encode($msg); 
    $this->log($xmldata); 
    if ($return) 
      return $xmldata; 
    else 
      echo $xmldata; 
  } 
 
  /** 
   * GET 请求 
   * @param string $url 
   */ 
  private function http_get($url){ 
    $oCurl = curl_init(); 
    if(stripos($url,"https://")!==FALSE){ 
      curl_setopt($oCurl, CURLOPT_SSL_VERIFYPEER, FALSE); 
      curl_setopt($oCurl, CURLOPT_SSL_VERIFYHOST, FALSE); 
    } 
    curl_setopt($oCurl, CURLOPT_URL, $url); 
    curl_setopt($oCurl, CURLOPT_RETURNTRANSFER, 1 ); 
    $sContent = curl_exec($oCurl); 
    $aStatus = curl_getinfo($oCurl); 
    curl_close($oCurl); 
    if(intval($aStatus["http_code"])==200){ 
      return $sContent; 
    }else{ 
      return false; 
    } 
  } 
  /** 
   * POST 请求 
   * @param string $url 
   * @param array $param 
   * @return string content 
   */ 
  private function http_post($url,$param){ 
    $oCurl = curl_init(); 
    if(stripos($url,"https://")!==FALSE){ 
      curl_setopt($oCurl, CURLOPT_SSL_VERIFYPEER, FALSE); 
      curl_setopt($oCurl, CURLOPT_SSL_VERIFYHOST, false); 
    } 
    if (is_string($param)) { 
      $strPOST = $param; 
    } else { 
      $aPOST = array(); 
      foreach($param as $key=>$val){ 
        $aPOST[] = $key."=".urlencode($val); 
      } 
      $strPOST = join("&", $aPOST); 
    } 
    curl_setopt($oCurl, CURLOPT_URL, $url); 
    curl_setopt($oCurl, CURLOPT_RETURNTRANSFER, 1 ); 
    curl_setopt($oCurl, CURLOPT_POST,true); 
    curl_setopt($oCurl, CURLOPT_POSTFIELDS,$strPOST); 
    $sContent = curl_exec($oCurl); 
    $aStatus = curl_getinfo($oCurl); 
    curl_close($oCurl); 
    if(intval($aStatus["http_code"])==200){ 
      return $sContent; 
    }else{ 
      return false; 
    } 
  } 
  /** 
   * 通用auth验证方法，暂时仅用于菜单更新操作 
   * @param string $appid 
   * @param string $appsecret 
   */ 
  public function checkAuth($appid='',$appsecret=''){ 
    if (!$appid || !$appsecret) { 
      $appid = $this->appid; 
      $appsecret = $this->appsecret; 
    } 
    //TODO: get the cache access_token 
    $result = $this->http_get(self::API_URL_PREFIX.self::AUTH_URL.'appid='.$appid.'&secret='.$appsecret); 
    if ($result) 
    { 
      $json = json_decode($result,true); 
      if (!$json || isset($json['errcode'])) { 
        $this->errCode = $json['errcode']; 
        $this->errMsg = $json['errmsg']; 
        return false; 
      } 
      $this->access_token = $json['access_token']; 
      $expire = $json['expires_in'] &#63; intval($json['expires_in'])-100 : 3600; 
      //TODO: cache access_token 
      return $this->access_token; 
    } 
    return false; 
  } 
  /** 
   * 删除验证数据 
   * @param string $appid 
   */ 
  public function resetAuth($appid=''){ 
    $this->access_token = ''; 
    //TODO: remove cache 
    return true; 
  } 
  /** 
   * 微信api不支持中文转义的json结构 
   * @param array $arr 
   */ 
  static function json_encode($arr) { 
    $parts = array (); 
    $is_list = false; 
    //Find out if the given array is a numerical array 
    $keys = array_keys ( $arr ); 
    $max_length = count ( $arr ) - 1; 
    if (($keys [0] === 0) && ($keys [$max_length] === $max_length )) { //See if the first key is 0 and last key is length - 1 
      $is_list = true; 
      for($i = 0; $i < count ( $keys ); $i ++) { //See if each key correspondes to its position 
        if ($i != $keys [$i]) { //A key fails at position check. 
          $is_list = false; //It is an associative array. 
          break; 
        } 
      } 
    } 
    foreach ( $arr as $key => $value ) { 
      if (is_array ( $value )) { //Custom handling for arrays 
        if ($is_list) 
          $parts [] = self::json_encode ( $value ); /* :RECURSION: */ 
        else 
          $parts [] = '"' . $key . '":' . self::json_encode ( $value ); /* :RECURSION: */ 
      } else { 
        $str = ''; 
        if (! $is_list) 
          $str = '"' . $key . '":'; 
        //Custom handling for multiple data types 
        if (is_numeric ( $value ) && $value<2000000000) 
          $str .= $value; //Numbers 
        elseif ($value === false) 
        $str .= 'false'; //The booleans 
        elseif ($value === true) 
        $str .= 'true'; 
        else 
          $str .= '"' . addslashes ( $value ) . '"'; //All other things 
        // :TODO: Is there any more datatype we should be in the lookout for&#63; (Object&#63;) 
        $parts [] = $str; 
      } 
    } 
    $json = implode ( ',', $parts ); 
    if ($is_list) 
      return '[' . $json . ']'; //Return numerical JSON 
    return '{' . $json . '}'; //Return associative JSON 
  } 
  /** 
   * 创建菜单 
   * @param array $data 菜单数组数据 
   * example: 
   { 
   "button":[ 
   { 
   "type":"click", 
   "name":"今日歌曲", 
   "key":"MENU_KEY_MUSIC" 
   }, 
   { 
   "type":"view", 
   "name":"歌手简介", 
   "url":"http://www.qq.com/" 
   }, 
   { 
   "name":"菜单", 
   "sub_button":[ 
   { 
   "type":"click", 
   "name":"hello word", 
   "key":"MENU_KEY_MENU" 
   }, 
   { 
   "type":"click", 
   "name":"赞一下我们", 
   "key":"MENU_KEY_GOOD" 
   }] 
   }] 
   } 
   */ 
  public function createMenu($data){ 
    if (!$this->access_token && !$this->checkAuth()) return false; 
    $result = $this->http_post(self::API_URL_PREFIX.self::MENU_CREATE_URL.'access_token='.$this->access_token,self::json_encode($data)); 
    if ($result) 
    { 
      $json = json_decode($result,true); 
      if (!$json || !empty($json['errcode'])) { 
        $this->errCode = $json['errcode']; 
        $this->errMsg = $json['errmsg']; 
        return false; 
      } 
      return true; 
    } 
    return false; 
  } 
  /** 
   * 获取菜单 
   * @return array('menu'=>array(....s)) 
   */ 
  public function getMenu(){ 
    if (!$this->access_token && !$this->checkAuth()) return false; 
    $result = $this->http_get(self::API_URL_PREFIX.self::MENU_GET_URL.'access_token='.$this->access_token); 
    if ($result) 
    { 
      $json = json_decode($result,true); 
      if (!$json || isset($json['errcode'])) { 
        $this->errCode = $json['errcode']; 
        $this->errMsg = $json['errmsg']; 
        return false; 
      } 
      return $json; 
    } 
    return false; 
  } 
  /** 
   * 删除菜单 
   * @return boolean 
   */ 
  public function deleteMenu(){ 
    if (!$this->access_token && !$this->checkAuth()) return false; 
    $result = $this->http_get(self::API_URL_PREFIX.self::MENU_DELETE_URL.'access_token='.$this->access_token); 
    if ($result) 
    { 
      $json = json_decode($result,true); 
      if (!$json || !empty($json['errcode'])) { 
        $this->errCode = $json['errcode']; 
        $this->errMsg = $json['errmsg']; 
        return false; 
      } 
      return true; 
    } 
    return false; 
  } 
  /** 
   * 根据媒体文件ID获取媒体文件 
   * @param string $media_id 媒体文件id 
   * @return raw data 
   */ 
  public function getMedia($media_id){ 
    if (!$this->access_token && !$this->checkAuth()) return false; 
    $result = $this->http_get(self::API_URL_PREFIX.self::MEDIA_GET_URL.'access_token='.$this->access_token.'&media_id='.$media_id); 
    if ($result) 
    { 
      $json = json_decode($result,true); 
      if (isset($json['errcode'])) { 
        $this->errCode = $json['errcode']; 
        $this->errMsg = $json['errmsg']; 
        return false; 
      } 
      return $json; 
    } 
    return false; 
  }   
  /** 
   * 创建二维码ticket 
   * @param int $scene_id 自定义追踪id 
   * @param int $type 0:临时二维码；1:永久二维码(此时expire参数无效) 
   * @param int $expire 临时二维码有效期，最大为1800秒 
   * @return array('ticket'=>'qrcode字串','expire_seconds'=>1800) 
   */ 
  public function getQRCode($scene_id,$type=0,$expire=1800){ 
    if (!$this->access_token && !$this->checkAuth()) return false; 
    $data = array( 
      'action_name'=>$type&#63;"QR_LIMIT_SCENE":"QR_SCENE", 
      'expire_seconds'=>$expire, 
      'action_info'=>array('scene'=>array('scene_id'=>$scene_id)) 
    ); 
    if ($type == 1) { 
      unset($data['expire_seconds']); 
    } 
    $result = $this->http_post(self::API_URL_PREFIX.self::QRCODE_CREATE_URL.'access_token='.$this->access_token,self::json_encode($data)); 
    if ($result) 
    { 
      $json = json_decode($result,true); 
      if (!$json || !empty($json['errcode'])) { 
        $this->errCode = $json['errcode']; 
        $this->errMsg = $json['errmsg']; 
        return false; 
      } 
      return $json; 
    } 
    return false; 
  } 
  /** 
   * 获取二维码图片 
   * @param string $ticket 传入由getQRCode方法生成的ticket参数 
   * @return string url 返回http地址 
   */ 
  public function getQRUrl($ticket) { 
    return self::QRCODE_IMG_URL.$ticket; 
  } 
  /** 
   * 批量获取关注用户列表 
   * @param unknown $next_openid 
   */ 
  public function getUserList($next_openid=''){ 
    if (!$this->access_token && !$this->checkAuth()) return false; 
    $result = $this->http_get(self::API_URL_PREFIX.self::USER_GET_URL.'access_token='.$this->access_token.'&next_openid='.$next_openid); 
    if ($result) 
    { 
      $json = json_decode($result,true); 
      if (isset($json['errcode'])) { 
        $this->errCode = $json['errcode']; 
        $this->errMsg = $json['errmsg']; 
        return false; 
      } 
      return $json; 
    } 
    return false; 
  } 
  /** 
   * 获取关注者详细信息 
   * @param string $openid 
   * @return array 
   */ 
  public function getUserInfo($openid){ 
    if (!$this->access_token && !$this->checkAuth()) return false; 
    $result = $this->http_get(self::API_URL_PREFIX.self::USER_INFO_URL.'access_token='.$this->access_token.'&openid='.$openid); 
    if ($result) 
    { 
      $json = json_decode($result,true); 
      if (isset($json['errcode'])) { 
        $this->errCode = $json['errcode']; 
        $this->errMsg = $json['errmsg']; 
        return false; 
      } 
      return $json; 
    } 
    return false; 
  } 
  /** 
   * 获取用户分组列表 
   * @return boolean|array 
   */ 
  public function getGroup(){ 
    if (!$this->access_token && !$this->checkAuth()) return false; 
    $result = $this->http_get(self::API_URL_PREFIX.self::GROUP_GET_URL.'access_token='.$this->access_token); 
    if ($result) 
    { 
      $json = json_decode($result,true); 
      if (isset($json['errcode'])) { 
        $this->errCode = $json['errcode']; 
        $this->errMsg = $json['errmsg']; 
        return false; 
      } 
      return $json; 
    } 
    return false; 
  } 
  /** 
   * 新增自定分组 
   * @param string $name 分组名称 
   * @return boolean|array 
   */ 
  public function createGroup($name){ 
    if (!$this->access_token && !$this->checkAuth()) return false; 
    $data = array( 
        'group'=>array('name'=>$name) 
    ); 
    $result = $this->http_post(self::API_URL_PREFIX.self::GROUP_CREATE_URL.'access_token='.$this->access_token,self::json_encode($data)); 
    if ($result) 
    { 
      $json = json_decode($result,true); 
      if (!$json || !empty($json['errcode'])) { 
        $this->errCode = $json['errcode']; 
        $this->errMsg = $json['errmsg']; 
        return false; 
      } 
      return $json; 
    } 
    return false; 
  } 
  /** 
   * 更改分组名称 
   * @param int $groupid 分组id 
   * @param string $name 分组名称 
   * @return boolean|array 
   */ 
  public function updateGroup($groupid,$name){ 
    if (!$this->access_token && !$this->checkAuth()) return false; 
    $data = array( 
        'group'=>array('id'=>$groupid,'name'=>$name) 
    ); 
    $result = $this->http_post(self::API_URL_PREFIX.self::GROUP_UPDATE_URL.'access_token='.$this->access_token,self::json_encode($data)); 
    if ($result) 
    { 
      $json = json_decode($result,true); 
      if (!$json || !empty($json['errcode'])) { 
        $this->errCode = $json['errcode']; 
        $this->errMsg = $json['errmsg']; 
        return false; 
      } 
      return $json; 
    } 
    return false; 
  } 
  /** 
   * 移动用户分组 
   * @param int $groupid 分组id 
   * @param string $openid 用户openid 
   * @return boolean|array 
   */ 
  public function updateGroupMembers($groupid,$openid){ 
    if (!$this->access_token && !$this->checkAuth()) return false; 
    $data = array( 
        'openid'=>$openid, 
        'to_groupid'=>$groupid 
    ); 
    $result = $this->http_post(self::API_URL_PREFIX.self::GROUP_MEMBER_UPDATE_URL.'access_token='.$this->access_token,self::json_encode($data)); 
    if ($result) 
    { 
      $json = json_decode($result,true); 
      if (!$json || !empty($json['errcode'])) { 
        $this->errCode = $json['errcode']; 
        $this->errMsg = $json['errmsg']; 
        return false; 
      } 
      return $json; 
    } 
    return false; 
  } 
  /** 
   * 发送客服消息 
   * @param array $data 消息结构{"touser":"OPENID","msgtype":"news","news":{...}} 
   * @return boolean|array 
   */ 
  public function sendCustomMessage($data){ 
    if (!$this->access_token && !$this->checkAuth()) return false; 
    $result = $this->http_post(self::API_URL_PREFIX.self::CUSTOM_SEND_URL.'access_token='.$this->access_token,self::json_encode($data)); 
    if ($result) 
    { 
      $json = json_decode($result,true); 
      if (!$json || !empty($json['errcode'])) { 
        $this->errCode = $json['errcode']; 
        $this->errMsg = $json['errmsg']; 
        return false; 
      } 
      return $json; 
    } 
    return false; 
  } 
  /** 
   * oauth 授权跳转接口 
   * @param string $callback 回调URI 
   * @return string 
   */ 
  public function getOauthRedirect($callback,$state='',$scope='snsapi_userinfo'){ 
    return self::OAUTH_PREFIX.self::OAUTH_AUTHORIZE_URL.'appid='.$this->appid.'&redirect_uri='.urlencode($callback).'&response_type=code&scope='.$scope.'&state='.$state.'#wechat_redirect'; 
  } 
  /* 
   * 通过code获取Access Token 
   * @return array {access_token,expires_in,refresh_token,openid,scope} 
   */ 
  public function getOauthAccessToken(){ 
    $code = isset($_GET['code'])&#63;$_GET['code']:''; 
    if (!$code) return false; 
    $result = $this->http_get(self::OAUTH_TOKEN_PREFIX.self::OAUTH_TOKEN_URL.'appid='.$this->appid.'&secret='.$this->appsecret.'&code='.$code.'&grant_type=authorization_code'); 
    if ($result) 
    { 
      $json = json_decode($result,true); 
      if (!$json || !empty($json['errcode'])) { 
        $this->errCode = $json['errcode']; 
        $this->errMsg = $json['errmsg']; 
        return false; 
      } 
      $this->user_token = $json['access_token']; 
      return $json; 
    } 
    return false; 
  } 
  /** 
   * 刷新access token并续期 
   * @param string $refresh_token 
   * @return boolean|mixed 
   */ 
  public function getOauthRefreshToken($refresh_token){ 
    $result = $this->http_get(self::OAUTH_TOKEN_PREFIX.self::OAUTH_REFRESH_URL.'appid='.$this->appid.'&grant_type=refresh_token&refresh_token='.$refresh_token); 
    if ($result) 
    { 
      $json = json_decode($result,true); 
      if (!$json || !empty($json['errcode'])) { 
        $this->errCode = $json['errcode']; 
        $this->errMsg = $json['errmsg']; 
        return false; 
      } 
      $this->user_token = $json['access_token']; 
      return $json; 
    } 
    return false; 
  } 
  /** 
   * 获取授权后的用户资料 
   * @param string $access_token 
   * @param string $openid 
   * @return array {openid,nickname,sex,province,city,country,headimgurl,privilege} 
   */ 
  public function getOauthUserinfo($access_token,$openid){ 
    $result = $this->http_get(self::OAUTH_USERINFO_URL.'access_token='.$access_token.'&openid='.$openid); 
    if ($result) 
    { 
      $json = json_decode($result,true); 
      if (!$json || !empty($json['errcode'])) { 
        $this->errCode = $json['errcode']; 
        $this->errMsg = $json['errmsg']; 
        return false; 
      } 
      return $json; 
    } 
    return false; 
  } 
}

接下来就是接口对应的index.php文件，处理微信服务器发送来的信息。
因为是工作室的微信公共账号，所以未做任何修改源码搬上来，截取有用的部分即可：

<&#63;php 
/** 
 * WeeGo工作室微信公众平台接口源码 
 * @author CallMeWhy <wanghaiyang@139.me> 
 * @version 1.0 
 */ 
include "wechat.class.php"; 
$options = array 
( 
  'token'=>'weego', 
  'debug'=>true, 
  'logcallback'=>'logdebug' 
); 
$weObj = new Wechat($options); 
// 验证 
$weObj->valid(); 
// 获取内容 
$weObj->getRev(); 
// 获取用户的OpenID  
$fromUsername = $weObj->getRevFrom(); 
// 获取接受信息的类型 
$type = $weObj->getRev()->getRevType(); 
 
//**********关注操作则写入数据库**********/ 
if($weObj->getRevSubscribe()) 
{ 
  // 获取用户OPENID并写入数据库 
  $mysql = new SaeMysql(); 
  $sql = "INSERT INTO `users` (`wxid`) VALUES ('" . $fromUsername . "');"; 
  $mysql->runSql($sql); 
  $mysql->closeDb(); 
  // 获得信息的类型 
  $news = array 
  ( 
    array 
    ( 
      'Title'=>'欢迎关注WeeGo工作室', 
      'Description'=>'发送任意内容查看最新开发进展', 
      'PicUrl'=>'http://233.weego.sinaapp.com/images/weego_400_200.png', 
    ) 
  ); 
  $weObj->news($news)->reply(); 
} 
//**********取消关注操作则删除数据库**********/ 
if($weObj->getRevUnsubscribe()) 
{ 
  // 获取用户OPENID并从数据库删除 
  $mysql = new SaeMysql(); 
  $sql = "DELETE FROM `users` WHERE `wxid` = '" . $fromUsername . "'"; 
  $mysql->runSql($sql); 
  $mysql->closeDb(); 
} 
switch($type) { 
  case Wechat::MSGTYPE_TEXT: 
    /**********文字信息**********/ 
    $news = array 
    ( 
      array 
      ( 
        'Title'=>"欢迎光临WeeGo工作室", 
        'PicUrl'=>'http://233.weego.sinaapp.com/images/weego_400_200.png', 
        //'Url'=>'http://233.weego.sinaapp.com/web/home.php&#63;wxid='.$fromUsername 
      ),    
      array 
      ( 
        'Title'=>"功能1：发送图片可以查询照片中人脸的年龄和性别信息哦", 
        'PicUrl'=>'http://233.weego.sinaapp.com/images/face.jpg', 
        //'Url'=>'http://233.weego.sinaapp.com/web/home.php&#63;wxid='.$fromUsername 
      ),  
      array 
      ( 
        'Title'=>"功能2：发送一张两人合影的照片可以计算两人的相似程度", 
        'PicUrl'=>'http://233.weego.sinaapp.com/images/mask.png', 
        //'Url'=>'http://233.weego.sinaapp.com/web/home.php&#63;wxid='.$fromUsername 
      ),  
      array 
      ( 
        'Title'=>"功能3：山东大学绩点查询签到等功能正在开发中敬请期待", 
        'PicUrl'=>'http://233.weego.sinaapp.com/images/sdu.jpg', 
        //'Url'=>'http://233.weego.sinaapp.com/web/home.php&#63;wxid='.$fromUsername 
      ) 
    ); 
    // 开发人员通道 
    if($weObj->getRev()->getRevContent() === "why"){ 
      $news = array 
      ( 
        array 
        ( 
          'Title'=>'开发人员通道', 
          'Description'=>'开发人员通道', 
          'PicUrl'=>'http://233.weego.sinaapp.com/images/weego_400_200.png', 
          'Url'=>'http://233.weego.sinaapp.com/web/home.php&#63;wxid='.$fromUsername 
        ) 
      ); 
    } 
    $weObj->news($news)->reply(); 
    exit; 
    break; 
  case Wechat::MSGTYPE_EVENT: 
    break; 
  case Wechat::MSGTYPE_IMAGE: 
    /**********图片信息**********/ 
    $imgUrl = $weObj->getRev()->getRevPic(); 
    $resultStr = face($imgUrl); 
    $weObj->text($resultStr)->reply(); 
    break; 
  default: 
    $weObj->text("Default")->reply(); 
} 
// 调用人脸识别的API返回识别结果 
function face($imgUrl) 
{ 
  // face++ 链接 
  $jsonStr = 
    file_get_contents("http://apicn.faceplusplus.com/v2/detection/detect&#63;url=".$imgUrl."&api_key=5eb2c984ad24ffc08c352bdb53ee52f8&api_secret=ViX19uvxkT_A0a6d55Hb0Q0QGMTqZ95f&&attribute=glass,pose,gender,age,race,smiling"); 
  $replyDic = json_decode($jsonStr); 
  $resultStr = ""; 
  $faceArray = $replyDic->{'face'}; 
  $resultStr .= "图中共检测到".count($faceArray)."张脸！\n"; 
  for ($i= 0;$i< count($faceArray); $i++){ 
    $resultStr .= "第".($i+1)."张脸\n"; 
    $tempFace = $faceArray[$i]; 
    // 获取所有属性 
    $tempAttr = $tempFace->{'attribute'}; 
    // 年龄：包含年龄分析结果 
    // value的值为一个非负整数表示估计的年龄, range表示估计年龄的正负区间 
    $tempAge = $tempAttr->{'age'}; 
    // 性别：包含性别分析结果 
    // value的值为Male/Female, confidence表示置信度 
    $tempGenger = $tempAttr->{'gender'};  
    // 种族：包含人种分析结果 
    // value的值为Asian/White/Black, confidence表示置信度 
    $tempRace = $tempAttr->{'race'};    
    // 微笑：包含微笑程度分析结果 
    //value的值为0-100的实数，越大表示微笑程度越高 
    $tempSmiling = $tempAttr->{'smiling'}; 
    // 眼镜：包含眼镜佩戴分析结果 
    // value的值为None/Dark/Normal, confidence表示置信度 
    $tempGlass = $tempAttr->{'glass'};   
    // 造型：包含脸部姿势分析结果 
    // 包括pitch_angle, roll_angle, yaw_angle 
    // 分别对应抬头，旋转（平面旋转），摇头 
    // 单位为角度。 
    $tempPose = $tempAttr->{'pose'}; 
    //返回年龄 
    $minAge = $tempAge->{'value'} - $tempAge->{'range'}; 
    $minAge = $minAge < 0 &#63; 0 : $minAge; 
    $maxAge = $tempAge->{'value'} + $tempAge->{'range'}; 
    $resultStr .= "年龄：".$minAge."-".$maxAge."岁\n"; 
    // 返回性别 
    if($tempGenger->{'value'} === "Male") 
      $resultStr .= "性别：男\n";  
    else if($tempGenger->{'value'} === "Female") 
      $resultStr .= "性别：女\n"; 
    // 返回种族 
    if($tempRace->{'value'} === "Asian") 
      $resultStr .= "种族：黄种人\n";   
    else if($tempRace->{'value'} === "Male") 
      $resultStr .= "种族：白种人\n";   
    else if($tempRace->{'value'} === "Black") 
      $resultStr .= "种族：黑种人\n";   
    // 返回眼镜 
    if($tempGlass->{'value'} === "None") 
      $resultStr .= "眼镜：木有眼镜\n";  
    else if($tempGlass->{'value'} === "Dark") 
      $resultStr .= "眼镜：目测墨镜\n";  
    else if($tempGlass->{'value'} === "Normal") 
      $resultStr .= "眼镜：普通眼镜\n";  
    //返回微笑 
    $resultStr .= "微笑：".round($tempSmiling->{'value'})."%\n"; 
  }   
  if(count($faceArray) === 2){ 
    // 获取face_id 
    $tempFace = $faceArray[0]; 
    $tempId1 = $tempFace->{'face_id'}; 
    $tempFace = $faceArray[1]; 
    $tempId2 = $tempFace->{'face_id'}; 
 
    // face++ 链接 
    $jsonStr = 
      file_get_contents("https://apicn.faceplusplus.com/v2/recognition/compare&#63;api_secret=ViX19uvxkT_A0a6d55Hb0Q0QGMTqZ95f&api_key=5eb2c984ad24ffc08c352bdb53ee52f8&face_id2=".$tempId2 ."&face_id1=".$tempId1); 
    $replyDic = json_decode($jsonStr); 
    //取出相似程度 
    $tempResult = $replyDic->{'similarity'}; 
    $resultStr .= "相似程度：".round($tempResult)."%\n"; 
    //具体分析相似处 
    $tempSimilarity = $replyDic->{'component_similarity'}; 
    $tempEye = $tempSimilarity->{'eye'}; 
    $tempEyebrow = $tempSimilarity->{'eyebrow'}; 
    $tempMouth = $tempSimilarity->{'mouth'}; 
    $tempNose = $tempSimilarity->{'nose'}; 
    $resultStr .= "相似分析：\n"; 
    $resultStr .= "眼睛：".round($tempEye)."%\n"; 
    $resultStr .= "眉毛：".round($tempEyebrow)."%\n"; 
    $resultStr .= "嘴巴：".round($tempMouth)."%\n"; 
    $resultStr .= "鼻子：".round($tempNose)."%\n"; 
  } 
 
  //如果没有检测到人脸 
  if($resultStr === "") 
    $resultStr = "照片中木有人脸=.="; 
  return $resultStr; 
}; 
// 写入本地日志文件的函数 
function logdebug($text) 
{ 
  file_put_contents('log.txt', $text."\n", FILE_APPEND);    
};

希望本文所述对大家基于php的微信公众平台开发有所帮助。