PHP使用Face++接口开发微信公众平台人脸识别系统的方法

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：

<?php 
/** 
 * 微信公众平台php-sdk, 官方api部分 
 * @author dodge <[e-mail]> 
 * @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?grant_type=client_credential&'; 
  const menu_create_url = '/menu/create?'; 
  const menu_get_url = '/menu/get?'; 
  const menu_delete_url = '/menu/delete?'; 
  const media_get_url = '/media/get?'; 
  const qrcode_create_url='/qrcode/create?'; 
  const qr_scene = 0; 
  const qr_limit_scene = 1; 
  const qrcode_img_url='https://mp.weixin.qq.com/cgi-bin/showqrcode?ticket='; 
  const user_get_url='/user/get?'; 
  const user_info_url='/user/info?'; 
  const group_get_url='/groups/get?'; 
  const group_create_url='/groups/create?'; 
  const group_update_url='/groups/update?'; 
  const group_member_update_url='/groups/members/update?'; 
  const custom_send_url='/message/custom/send?'; 
  const oauth_prefix = 'https://open.weixin.qq.com/connect/oauth2'; 
  const oauth_authorize_url = '/authorize?'; 
  const oauth_token_prefix = 'https://api.weixin.qq.com/sns/oauth2'; 
  const oauth_token_url = '/access_token?'; 
  const oauth_refresh_url = '/refresh_token?'; 
  const oauth_userinfo_url = 'https://api.weixin.qq.com/sns/userinfo?'; 
  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'])?$options['token']:''; 
    $this->appid = isset($options['appid'])?$options['appid']:''; 
    $this->appsecret = isset($options['appsecret'])?$options['appsecret']:''; 
    $this->debug = isset($options['debug'])?$options['debug']:false; 
    $this->_logcallback = isset($options['logcallback'])?$options['logcallback']:false; 
  } 
  /** 
   * for weixin server validation 
   */  
  private function checksignature() 
  { 
    $signature = isset($_get["signature"])?$_get["signature"]:''; 
    $timestamp = isset($_get["timestamp"])?$_get["timestamp"]:''; 
    $nonce = isset($_get["nonce"])?$_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"]) ? $_get["echostr"]: ''; 
    if ($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($val)) ? self::data_to_xml($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) ? '' : " {$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 ? 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 ? 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 ? 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 = $json['expires_in'] ? intval($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? (object?) 
        $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?"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'])?$_get['code']:''; 
    if (!$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：

<?php 
/** 
 * weego工作室微信公众平台接口源码 
 * @author callmewhy <[e-mail]> 
 * @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**********/ 
    $news = array 
    ( 
      array 
      ( 
        'title'=>"欢迎光临weego工作室", 
        'picurl'=>'http://233.weego.sinaapp.com/images/weego_400_200.png', 
        //'url'=>'http://233.weego.sinaapp.com/web/home.php?wxid='.$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?wxid='.$fromusername 
      ),  
      array 
      ( 
        'title'=>"功能2：发送一张两人合影的照片可以计算两人的相似程度", 
        'picurl'=>'http://233.weego.sinaapp.com/images/mask.png', 
        //'url'=>'http://233.weego.sinaapp.com/web/home.php?wxid='.$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?wxid='.$fromusername 
      ) 
    ); 
    // 开发人员通道 
    if($weobj->getrev()->getrevcontent() === "why"){ 
      $news = array 
      ( 
        array 
        ( 
          'title'=>'开发人员通道', 
          'description'=>'开发人员通道', 
          'picurl'=>'http://233.weego.sinaapp.com/images/weego_400_200.png', 
          'url'=>'http://233.weego.sinaapp.com/web/home.php?wxid='.$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 
  $jsonstr = 
    file_get_contents("http://apicn.faceplusplus.com/v2/detection/detect?url=".$imgurl."&api_key=5eb2c984ad24ffc08c352bdb53ee52f8&api_secret=vix19uvxkt_a0a6d55hb0q0qgmtqz95f&&attribute=glass,pose,gender,age,race,smiling"); 
  $replydic = json_decode($jsonstr); 
  $resultstr = ""; 
  $facearray = $replydic->{'face'}; 
  $resultstr .= "图*检测到".count($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 ? 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 
    $jsonstr = 
      file_get_contents("https://apicn.faceplusplus.com/v2/recognition/compare?api_secret=vix19uvxkt_a0a6d55hb0q0qgmtqz95f&api_key=5eb2c984ad24ffc08c352bdb53ee52f8&face_id2=".$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。