[PHP]如何使用Face++接口开发微信公共平台的人脸识别系统

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

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 <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?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 '';
    }

    /**
     * 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    .=  "";
            $xml    .=  ( is_array($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   = "";
        $xml   .= self::data_to_xml($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  $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 ) && $valueaccess_token && !$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 <wanghaiyang@139.me>
 *  @link http://blog.csdn.net/pleasecallmewhy/article/details/18862539
 *  @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'};

    $resultStr .= "图中共检测到".count($faceArray)."张脸！\n";
    for ($i= 0;$i{'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 {'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);
};