<?php
/**
 *	微信公众平台企业号PHP-SDK, 官方API类库
 *  @author  binsee <binsee@163.com>
 *  @link https://github.com/binsee/wechat-php-sdk
 *  @version 1.0
 *  usage:
 *   $options = array(
 *			'token'=>'tokenaccesskey', //填写应用接口的Token
 *			'encodingaeskey'=>'encodingaeskey', //填写加密用的EncodingAESKey
 *			'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
 *			'agentid'=>'1', //应用的id
 *			'debug'=>false, //调试开关
 *			'logcallback'=>'logg', //调试输出方法，需要有一个string类型的参数
 *		);
 *
 */
class Wechat
{
    const MSGTYPE_TEXT 		= 'text';
    const MSGTYPE_IMAGE 	= 'image';
    const MSGTYPE_LOCATION 	= 'location';
    const MSGTYPE_LINK 		= 'link';    	//暂不支持
    const MSGTYPE_EVENT 	= 'event';
    const MSGTYPE_MUSIC 	= 'music';    	//暂不支持
    const MSGTYPE_NEWS 		= 'news';
    const MSGTYPE_VOICE 	= 'voice';
    const MSGTYPE_VIDEO 	= 'video';

    const EVENT_SUBSCRIBE 	= 'subscribe';      //订阅
    const EVENT_UNSUBSCRIBE = 'unsubscribe'; 	//取消订阅
    const EVENT_LOCATION 	= 'LOCATION';       //上报地理位置
    const EVENT_ENTER_AGENT = 'enter_agent';   	//用户进入应用

    const EVENT_MENU_VIEW 			= 'VIEW'; 				//菜单 - 点击菜单跳转链接
    const EVENT_MENU_CLICK 			= 'CLICK';              //菜单 - 点击菜单拉取消息
    const EVENT_MENU_SCAN_PUSH 		= 'scancode_push';      //菜单 - 扫码推事件(客户端跳URL)
    const EVENT_MENU_SCAN_WAITMSG 	= 'scancode_waitmsg'; 	//菜单 - 扫码推事件(客户端不跳URL)
    const EVENT_MENU_PIC_SYS 		= 'pic_sysphoto';       //菜单 - 弹出系统拍照发图
    const EVENT_MENU_PIC_PHOTO 		= 'pic_photo_or_album'; //菜单 - 弹出拍照或者相册发图
    const EVENT_MENU_PIC_WEIXIN 	= 'pic_weixin';         //菜单 - 弹出微信相册发图器
    const EVENT_MENU_LOCATION 		= 'location_select';    //菜单 - 弹出地理位置选择器

    const EVENT_SEND_MASS = 'MASSSENDJOBFINISH';        //发送结果 - 高级群发完成
    const EVENT_SEND_TEMPLATE = 'TEMPLATESENDJOBFINISH';//发送结果 - 模板消息发送结果

    const API_URL_PREFIX = 'https://qyapi.weixin.qq.com/cgi-bin';

    const USER_CREATE_URL 		= '/user/create?';
    const USER_UPDATE_URL 		= '/user/update?';
    const USER_DELETE_URL 		= '/user/delete?';
    const USER_BATCHDELETE_URL 	= '/user/batchdelete?';
    const USER_GET_URL 			= '/user/get?';
    const USER_LIST_URL 		= '/user/simplelist?';
    const USER_LIST_INFO_URL 	= '/user/list?';
    const USER_GETINFO_URL 		= '/user/getuserinfo?';
    const USER_INVITE_URL 		= '/invite/send?';
    const DEPARTMENT_CREATE_URL = '/department/create?';
    const DEPARTMENT_UPDATE_URL = '/department/update?';
    const DEPARTMENT_DELETE_URL = '/department/delete?';
    const DEPARTMENT_MOVE_URL 	= '/department/move?';
    const DEPARTMENT_LIST_URL 	= '/department/list?';
    const TAG_CREATE_URL 		= '/tag/create?';
    const TAG_UPDATE_URL 		= '/tag/update?';
    const TAG_DELETE_URL 		= '/tag/delete?';
    const TAG_GET_URL 			= '/tag/get?';
    const TAG_ADDUSER_URL 		= '/tag/addtagusers?';
    const TAG_DELUSER_URL 		= '/tag/deltagusers?';
    const TAG_LIST_URL 			= '/tag/list?';
    const MEDIA_UPLOAD_URL 		= '/media/upload?';
    const MEDIA_GET_URL 		= '/media/get?';
    const AUTHSUCC_URL 			= '/user/authsucc?';
    const MASS_SEND_URL 		= '/message/send?';
    const MENU_CREATE_URL 		= '/menu/create?';
    const MENU_GET_URL 			= '/menu/get?';
    const MENU_DELETE_URL 		= '/menu/delete?';
    const TOKEN_GET_URL 		= '/gettoken?';
    const TICKET_GET_URL 		= '/get_jsapi_ticket?';
	const CALLBACKSERVER_GET_URL = '/getcallbackip?';
	const OAUTH_PREFIX 			= 'https://open.weixin.qq.com/connect/oauth2';
	const OAUTH_AUTHORIZE_URL 	= '/authorize?';

	private $token;
	private $encodingAesKey;
	private $appid;         //也就是企业号的CorpID
	private $appsecret;
	private $access_token;
    private $agentid;       //应用id   AgentID
	private $postxml;
    private $agentidxml;    //接收的应用id   AgentID
	private $_msg;
	private $_receive;
	private $_sendmsg;      //主动发送消息的内容
	private $_text_filter = true;
	public $debug =  false;
	public $errCode = 40001;
	public $errMsg = "no access";
	public $logcallback;

	public function __construct($options)
	{
		$this->token = isset($options['token'])?$options['token']:'';
		$this->encodingAesKey = isset($options['encodingaeskey'])?$options['encodingaeskey']:'';
		$this->appid = isset($options['appid'])?$options['appid']:'';
		$this->appsecret = isset($options['appsecret'])?$options['appsecret']:'';
		$this->agentid = isset($options['agentid'])?$options['agentid']:'';
		$this->debug = isset($options['debug'])?$options['debug']:false;
		$this->logcallback = isset($options['logcallback'])?$options['logcallback']:false;
	}

	protected 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);
	    }
	}

	/**
	 * 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;
	}

	public static function xmlSafeStr($str)
	{
	    return '<![CDATA['.preg_replace("/[\\x00-\\x08\\x0b-\\x0c\\x0e-\\x1f]/",'',$str).']]>';
	}

	/**
	 * 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;
	}


	/**
	 * 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_string ( $value ) && is_numeric ( $value ) && $value<2000000000)
	                $str .= $value; //Numbers
	            elseif ($value === false)
	            $str .= 'false'; //The booleans
	            elseif ($value === true)
	            $str .= 'true';
	            else
	                $str .= '"' .addcslashes($value, "\\\"\n\r\t/"). '"'; //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
	}

	/**
	 * 过滤文字回复\r\n换行符
	 * @param string $text
	 * @return string|mixed
	 */
	private function _auto_text_filter($text) {
	    if (!$this->_text_filter) return $text;
	    return str_replace("\r\n", "\n", $text);
	}

	/**
	 * 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($oCurl, CURLOPT_SSLVERSION, 1); //CURL_SSLVERSION_TLSv1
	    }
	    curl_setopt($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
	 * @param boolean $post_file 是否文件上传
	 * @return string content
	 */
	private function http_post($url,$param,$post_file=false){
		$oCurl = curl_init();
		if(stripos($url,"https://")!==FALSE){
			curl_setopt($oCurl, CURLOPT_SSL_VERIFYPEER, FALSE);
			curl_setopt($oCurl, CURLOPT_SSL_VERIFYHOST, false);
			curl_setopt($oCurl, CURLOPT_SSLVERSION, 1); //CURL_SSLVERSION_TLSv1
		}
		if (is_string($param) || $post_file) {
			$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($oCurl, CURLOPT_POST,true);
		if(PHP_VERSION_ID >= 50500){
			curl_setopt($oCurl, CURLOPT_SAFE_UPLOAD, FALSE);
		}
		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;
		}
	}

	/**
	 * For weixin server validation
	 */
	private function checkSignature($str)
	{
	    $signature = isset($_GET["msg_signature"])?$_GET["msg_signature"]:'';
	    $timestamp = isset($_GET["timestamp"])?$_GET["timestamp"]:'';
	    $nonce = isset($_GET["nonce"])?$_GET["nonce"]:'';
	    $tmpArr = array($str,$this->token, $timestamp, $nonce);//比普通公众平台多了一个加密的密文
	    sort($tmpArr, SORT_STRING);
	    $tmpStr = implode($tmpArr);
	    $shaStr = sha1($tmpStr);
	    if( $shaStr == $signature ){
	        return true;
	    }else{
	        return false;
	    }
	}

	/**
	 * 微信验证，包括post来的xml解密
	 * @param bool $return 是否返回
	 */
	public function valid($return=false)
    {
        $encryptStr="";
        if ($_SERVER['REQUEST_METHOD'] == "POST") {
            $postStr = file_get_contents("php://input");
            $array = (array)simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
            $this->log($postStr);
            if (isset($array['Encrypt'])) {
                $encryptStr = $array['Encrypt'];
                $this->agentidxml = isset($array['AgentID']) ? $array['AgentID']: '';
            }
        } else {
            $encryptStr = isset($_GET["echostr"]) ? $_GET["echostr"]: '';

        }
        if ($encryptStr) {
            $ret=$this->checkSignature($encryptStr);
        }
        if (!isset($ret) || !$ret) {
        	if (!$return) {
        	    die('no access');
        	} else {
        	    return false;
        	}
        }
        $pc = new Prpcrypt($this->encodingAesKey);
        $array = $pc->decrypt($encryptStr,$this->appid);
        if (!isset($array[0]) || ($array[0] != 0)) {
            if (!$return) {
        	    die('解密失败！');
        	} else {
        	    return false;
        	}
        }
        if ($_SERVER['REQUEST_METHOD'] == "POST") {
            $this->postxml = $array[1];
            //$this->log($array[1]);
            return ($this->postxml!="");
        } else {
            $echoStr = $array[1];
            if ($return) {
            	return $echoStr;
            } else {
                die($echoStr);
            }
        }
        return false;
    }

    /**
     * 获取微信服务器发来的信息
     */
	public function getRev()
	{
		if ($this->_receive) return $this;
		$postStr = $this->postxml;
		$this->log($postStr);
		if (!empty($postStr)) {
			$this->_receive = (array)simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
			if (!isset($this->_receive['AgentID'])) {
			     $this->_receive['AgentID']=$this->agentidxml; //当前接收消息的应用id
			}
		}
		return $this;
	}

	/**
	 * 获取微信服务器发来的信息
	 */
	public function getRevData()
	{
		return $this->_receive;
	}

	/**
	 * 获取微信服务器发来的原始加密信息
	 */
	public function getRevPostXml()
	{
	    return $this->postxml;
	}

	/**
	 * 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;
	}

	/**
	 * 获取接收消息的应用id
	 */
	public function getRevAgentID() {
		if (isset($this->_receive['AgentID']))
			return $this->_receive['AgentID'];
		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
			return false;
	}

	/**
	 * 获取接收消息图片
	 */
	public function getRevPic(){
		if (isset($this->_receive['PicUrl']))
			return array(
				'mediaid'=>$this->_receive['MediaId'],
				'picurl'=>(string)$this->_receive['PicUrl'],    //防止picurl为空导致解析出错
			);
		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'=>$this->_receive['Location_Y'],
				'scale'=>(string)$this->_receive['Scale'],
				'label'=>(string)$this->_receive['Label']
			);
		} else
			return false;
	}

	/**
	 * 获取上报地理位置事件
	 */
	public function getRevEventGeo(){
        	if (isset($this->_receive['Latitude'])){
        		 return array(
				'x'=>$this->_receive['Latitude'],
				'y'=>$this->_receive['Longitude'],
				'precision'=>$this->_receive['Precision'],
			);
		} else
			return false;
	}

	/**
	 * 获取接收事件推送
	 */
	public function getRevEvent(){
		if (isset($this->_receive['Event'])){
			$array['event'] = $this->_receive['Event'];
		}
		if (isset($this->_receive['EventKey']) && !empty($this->_receive['EventKey'])){
			$array['key'] = $this->_receive['EventKey'];
		}
		if (isset($array) && count($array) > 0) {
			return $array;
		} else {
			return false;
		}
	}

	/**
	 * 获取自定义菜单的扫码推事件信息
	 *
	 * 事件类型为以下两种时则调用此方法有效
	 * Event	 事件类型，scancode_push
	 * Event	 事件类型，scancode_waitmsg
	 *
	 * @return: array | false
	 * array (
	 *     'ScanType'=>'qrcode',
	 *     'ScanResult'=>'123123'
	 * )
	 */
	public function getRevScanInfo(){
	    if (isset($this->_receive['ScanCodeInfo'])){
	        if (!is_array($this->_receive['SendPicsInfo'])) {
	            $array=(array)$this->_receive['ScanCodeInfo'];
	            $this->_receive['ScanCodeInfo']=$array;
	        }else {
	            $array=$this->_receive['ScanCodeInfo'];
	        }
	    }
	    if (isset($array) && count($array) > 0) {
	        return $array;
	    } else {
	        return false;
	    }
	}

	/**
	 * 获取自定义菜单的图片发送事件信息
	 *
	 * 事件类型为以下三种时则调用此方法有效
	 * Event	 事件类型，pic_sysphoto        弹出系统拍照发图的事件推送
	 * Event	 事件类型，pic_photo_or_album  弹出拍照或者相册发图的事件推送
	 * Event	 事件类型，pic_weixin          弹出微信相册发图器的事件推送
	 *
	 * @return: array | false
	 * array (
	 *   'Count' => '2',
	 *   'PicList' =>array (
	 *         'item' =>array (
	 *             0 =>array ('PicMd5Sum' => 'aaae42617cf2a14342d96005af53624c'),
	 *             1 =>array ('PicMd5Sum' => '149bd39e296860a2adc2f1bb81616ff8'),
	 *         ),
	 *   ),
	 * )
	 *
	 */
	public function getRevSendPicsInfo(){
	    if (isset($this->_receive['SendPicsInfo'])){
	        if (!is_array($this->_receive['SendPicsInfo'])) {
	            $array=(array)$this->_receive['SendPicsInfo'];
	            if (isset($array['PicList'])){
	                $array['PicList']=(array)$array['PicList'];
	                $item=$array['PicList']['item'];
	                $array['PicList']['item']=array();
	                foreach ( $item as $key => $value ){
	                    $array['PicList']['item'][$key]=(array)$value;
	                }
	            }
	            $this->_receive['SendPicsInfo']=$array;
	        } else {
	            $array=$this->_receive['SendPicsInfo'];
	        }
	    }
	    if (isset($array) && count($array) > 0) {
	        return $array;
	    } else {
	        return false;
	    }
	}

	/**
	 * 获取自定义菜单的地理位置选择器事件推送
	 *
	 * 事件类型为以下时则可以调用此方法有效
	 * Event	 事件类型，location_select        弹出系统拍照发图的事件推送
	 *
	 * @return: array | false
	 * array (
	 *   'Location_X' => '33.731655000061',
	 *   'Location_Y' => '113.29955200008047',
	 *   'Scale' => '16',
	 *   'Label' => '某某市某某区某某路',
	 *   'Poiname' => '',
	 * )
	 *
	 */
	public function getRevSendGeoInfo(){
	    if (isset($this->_receive['SendLocationInfo'])){
	        if (!is_array($this->_receive['SendLocationInfo'])) {
	            $array=(array)$this->_receive['SendLocationInfo'];
	            if (empty($array['Poiname'])) {
	                $array['Poiname']="";
	            }
	            if (empty($array['Label'])) {
	                $array['Label']="";
	            }
	            $this->_receive['SendLocationInfo']=$array;
	        } else {
	            $array=$this->_receive['SendLocationInfo'];
	        }
	    }
	    if (isset($array) && count($array) > 0) {
	        return $array;
	    } else {
	        return false;
	    }
	}

	/**
	 * 获取接收语音推送
	 */
	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;
	}

	/**
	 * 设置回复消息
	 * Example: $obj->text('hello')->reply();
	 * @param string $text
	 */
	public function text($text='')
	{
		$msg = array(
			'ToUserName' => $this->getRevFrom(),
			'FromUserName'=>$this->getRevTo(),
			'MsgType'=>self::MSGTYPE_TEXT,
			'Content'=>$this->_auto_text_filter($text),
			'CreateTime'=>time(),
		);
		$this->Message($msg);
		return $this;
	}

	/**
	 * 设置回复消息
	 * Example: $obj->image('media_id')->reply();
	 * @param string $mediaid
	 */
	public function image($mediaid='')
	{
		$msg = array(
			'ToUserName' => $this->getRevFrom(),
			'FromUserName'=>$this->getRevTo(),
			'MsgType'=>self::MSGTYPE_IMAGE,
			'Image'=>array('MediaId'=>$mediaid),
			'CreateTime'=>time(),
		);
		$this->Message($msg);
		return $this;
	}

	/**
	 * 设置回复消息
	 * Example: $obj->voice('media_id')->reply();
	 * @param string $mediaid
	 */
	public function voice($mediaid='')
	{
		$msg = array(
			'ToUserName' => $this->getRevFrom(),
			'FromUserName'=>$this->getRevTo(),
			'MsgType'=>self::MSGTYPE_IMAGE,
			'Voice'=>array('MediaId'=>$mediaid),
			'CreateTime'=>time(),
		);
		$this->Message($msg);
		return $this;
	}

	/**
	 * 设置回复消息
	 * Example: $obj->video('media_id','title','description')->reply();
	 * @param string $mediaid
	 */
	public function video($mediaid='',$title='',$description='')
	{
		$msg = array(
			'ToUserName' => $this->getRevFrom(),
			'FromUserName'=>$this->getRevTo(),
			'MsgType'=>self::MSGTYPE_IMAGE,
			'Video'=>array(
			        'MediaId'=>$mediaid,
			        'Title'=>$title,
			        'Description'=>$description
			),
			'CreateTime'=>time(),
		);
		$this->Message($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())
	{

		$count = count($newsData);

		$msg = array(
			'ToUserName' => $this->getRevFrom(),
			'FromUserName'=>$this->getRevTo(),
			'MsgType'=>self::MSGTYPE_NEWS,
			'CreateTime'=>time(),
			'ArticleCount'=>$count,
			'Articles'=>$newsData,

		);
		$this->Message($msg);
		return $this;
	}

	/**
	 * 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;
	    }
	}

	/**
	 *
	 * 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);
		$pc = new Prpcrypt($this->encodingAesKey);
		$array = $pc->encrypt($xmldata, $this->appid);
		$ret = $array[0];
		if ($ret != 0) {
		    $this->log('encrypt err!');
		    return false;
		}
		$timestamp = time();
		$nonce = rand(77,999)*rand(605,888)*rand(11,99);
		$encrypt = $array[1];
		$tmpArr = array($this->token, $timestamp, $nonce,$encrypt);//比普通公众平台多了一个加密的密文
		sort($tmpArr, SORT_STRING);
		$signature = implode($tmpArr);
		$signature = sha1($signature);
		$smsg = $this->generate($encrypt, $signature, $timestamp, $nonce);
		$this->log($smsg);
		if ($return)
		    return $smsg;
		elseif ($smsg){
			echo $smsg;
		    return true;

		}else
		    return false;
	}

	private function generate($encrypt, $signature, $timestamp, $nonce)
	{
	    //格式化加密信息
	    $format = "<xml>
<Encrypt><![CDATA[%s]]></Encrypt>
<MsgSignature><![CDATA[%s]]></MsgSignature>
<TimeStamp>%s</TimeStamp>
<Nonce><![CDATA[%s]]></Nonce>
</xml>";
	    return sprintf($format, $encrypt, $signature, $timestamp, $nonce);
	}

	/**
	 * 设置缓存，按需重载
	 * @param string $cachename
	 * @param mixed $value
	 * @param int $expired
	 * @return boolean
	 */
	protected function setCache($cachename,$value,$expired){
		//TODO: set cache implementation
		return false;
	}

	/**
	 * 获取缓存，按需重载
	 * @param string $cachename
	 * @return mixed
	 */
	protected function getCache($cachename){
		//TODO: get cache implementation
		return false;
	}

	/**
	 * 清除缓存，按需重载
	 * @param string $cachename
	 * @return boolean
	 */
	protected function removeCache($cachename){
		//TODO: remove cache implementation
		return false;
	}

	/**
	 * 通用auth验证方法
	 * @param string $appid
	 * @param string $appsecret
	 * @param string $token 手动指定access_token，非必要情况不建议用
	 */
	public function checkAuth($appid='',$appsecret='',$token=''){
		if (!$appid || !$appsecret) {
			$appid = $this->appid;
			$appsecret = $this->appsecret;
		}
		if ($token) { //手动指定token，优先使用
		    $this->access_token=$token;
		    return $this->access_token;
		}

		$authname = 'qywechat_access_token'.$appid;
		if ($rs = $this->getCache($authname))  {
			$this->access_token = $rs;
			return $rs;
		}

		$result = $this->http_get(self::API_URL_PREFIX.self::TOKEN_GET_URL.'corpid='.$appid.'&corpsecret='.$appsecret);
		if ($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;
			$this->setCache($authname,$this->access_token,$expire);
			return $this->access_token;
		}
		return false;
	}

	/**
	 * 删除验证数据
	 * @param string $appid
	 */
	public function resetAuth($appid=''){
		if (!$appid) $appid = $this->appid;
		$this->access_token = '';
		$authname = 'qywechat_access_token'.$appid;
		$this->removeCache($authname);
		return true;
	}

	/**
	 * 删除JSAPI授权TICKET
	 * @param string $appid 用于多个appid时使用
	 */
	public function resetJsTicket($appid=''){
		if (!$appid) $appid = $this->appid;
		$this->jsapi_ticket = '';
		$authname = 'qywechat_jsapi_ticket'.$appid;
		$this->removeCache($authname);
		return true;
	}

	/**
	 * 获取JSAPI授权TICKET
	 * @param string $appid 用于多个appid时使用,可空
	 * @param string $jsapi_ticket 手动指定jsapi_ticket，非必要情况不建议用
	 */
	public function getJsTicket($appid='',$jsapi_ticket=''){
		if (!$this->access_token && !$this->checkAuth()) return false;
		if (!$appid) $appid = $this->appid;
		if ($jsapi_ticket) { //手动指定token，优先使用
		    $this->jsapi_ticket = $jsapi_ticket;
		    return $this->jsapi_ticket;
		}
		$authname = 'qywechat_jsapi_ticket'.$appid;
		if ($rs = $this->getCache($authname))  {
			$this->jsapi_ticket = $rs;
			return $rs;
		}
		$result = $this->http_get(self::API_URL_PREFIX.self::TICKET_GET_URL.'access_token='.$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;
			}
			$this->jsapi_ticket = $json['ticket'];
			$expire = $json['expires_in'] ? intval($json['expires_in'])-100 : 3600;
			$this->setCache($authname, $this->jsapi_ticket, $expire);
			return $this->jsapi_ticket;
		}
		return false;
	}


	/**
	 * 获取JsApi使用签名
	 * @param string $url 网页的URL，自动处理#及其后面部分
	 * @param string $timestamp 当前时间戳 (为空则自动生成)
	 * @param string $noncestr 随机串 (为空则自动生成)
	 * @param string $appid 用于多个appid时使用,可空
	 * @return array|bool 返回签名字串
	 */
	public function getJsSign($url, $timestamp=0, $noncestr='', $appid=''){
	    if (!$this->jsapi_ticket && !$this->getJsTicket($appid) || !$url) return false;
	    if (!$timestamp)
	        $timestamp = time();
	    if (!$noncestr)
	        $noncestr = $this->generateNonceStr();
	    $ret = strpos($url,'#');
	    if ($ret)
	        $url = substr($url,0,$ret);
	    $url = trim($url);
	    if (empty($url))
	        return false;
	    $arrdata = array("timestamp" => $timestamp, "noncestr" => $noncestr, "url" => $url, "jsapi_ticket" => $this->jsapi_ticket);
	    $sign = $this->getSignature($arrdata);
	    if (!$sign)
	        return false;
	    $signPackage = array(
	            "appid"     => $this->appid,
	            "noncestr"  => $noncestr,
	            "timestamp" => $timestamp,
	            "url"       => $url,
	            "signature" => $sign
	    );
	    return $signPackage;
	}

	/**
	 * 获取签名
	 * @param array $arrdata 签名数组
	 * @param string $method 签名方法
	 * @return boolean|string 签名值
	 */
	public function getSignature($arrdata,$method="sha1") {
		if (!function_exists($method)) return false;
		ksort($arrdata);
		$paramstring = "";
		foreach($arrdata as $key => $value)
		{
			if(strlen($paramstring) == 0)
				$paramstring .= $key . "=" . $value;
			else
				$paramstring .= "&" . $key . "=" . $value;
		}
		$Sign = $method($paramstring);
		return $Sign;
	}

	/**
	 * 生成随机字串
	 * @param number $length 长度，默认为16，最长为32字节
	 * @return string
	 */
	public function generateNonceStr($length=16){
		// 密码字符集，可任意添加你需要的字符
		$chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
		$str = "";
		for($i = 0; $i < $length; $i++)
		{
			$str .= $chars[mt_rand(0, strlen($chars) - 1)];
		}
		return $str;
	}


	/**
	 * 创建菜单
	 * @param array $data 菜单数组数据
	 * example:
     * 	array (
     * 	    'button' => array (
     * 	      0 => array (
     * 	        'name' => '扫码',
     * 	        'sub_button' => array (
     * 	            0 => array (
     * 	              'type' => 'scancode_waitmsg',
     * 	              'name' => '扫码带提示',
     * 	              'key' => 'rselfmenu_0_0',
     * 	            ),
     * 	            1 => array (
     * 	              'type' => 'scancode_push',
     * 	              'name' => '扫码推事件',
     * 	              'key' => 'rselfmenu_0_1',
     * 	            ),
     * 	        ),
     * 	      ),
     * 	      1 => array (
     * 	        'name' => '发图',
     * 	        'sub_button' => array (
     * 	            0 => array (
     * 	              'type' => 'pic_sysphoto',
     * 	              'name' => '系统拍照发图',
     * 	              'key' => 'rselfmenu_1_0',
     * 	            ),
     * 	            1 => array (
     * 	              'type' => 'pic_photo_or_album',
     * 	              'name' => '拍照或者相册发图',
     * 	              'key' => 'rselfmenu_1_1',
     * 	            )
     * 	        ),
     * 	      ),
     * 	      2 => array (
     * 	        'type' => 'location_select',
     * 	        'name' => '发送位置',
     * 	        'key' => 'rselfmenu_2_0'
     * 	      ),
     * 	    ),
     * 	)
     * type可以选择为以下几种，会收到相应类型的事件推送。请注意，3到8的所有事件，仅支持微信iPhone5.4.1以上版本，
     * 和Android5.4以上版本的微信用户，旧版本微信用户点击后将没有回应，开发者也不能正常接收到事件推送。
     * 1、click：点击推事件
     * 2、view：跳转URL
     * 3、scancode_push：扫码推事件
     * 4、scancode_waitmsg：扫码推事件且弹出“消息接收中”提示框
     * 5、pic_sysphoto：弹出系统拍照发图
     * 6、pic_photo_or_album：弹出拍照或者相册发图
     * 7、pic_weixin：弹出微信相册发图器
     * 8、location_select：弹出地理位置选择器
	 */
	public function createMenu($data,$agentid=''){
	    if ($agentid=='') {
	    	$agentid=$this->agentid;
	    }
		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.'&agentid='.$agentid,self::json_encode($data));
		if ($result)
		{
			$json = json_decode($result,true);
			if (!$json || !empty($json['errcode']) || $json['errcode']!=0) {
				$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($agentid=''){
	    if ($agentid=='') {
	    	$agentid=$this->agentid;
	    }
		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.'&agentid='.$agentid);
		if ($result)
		{
			$json = json_decode($result,true);
			if (!$json || isset($json['errcode']) || $json['errcode']!=0) {
				$this->errCode = $json['errcode'];
				$this->errMsg = $json['errmsg'];
				return false;
			}
			return $json;
		}
		return false;
	}

	/**
	 * 删除菜单
	 * @return boolean
	 */
	public function deleteMenu($agentid=''){
	    if ($agentid=='') {
	    	$agentid=$this->agentid;
	    }
		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.'&agentid='.$agentid);
		if ($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;
	}

	/**
	 * 上传多媒体文件 (只有三天的有效期，过期自动被删除)
	 * 注意：上传大文件时可能需要先调用 set_time_limit(0) 避免超时
	 * 注意：数组的键值任意，但文件名前必须加@，使用单引号以避免本地路径斜杠被转义
	 * @param array $data {"media":'@Path\filename.jpg'}
	 * @param type 媒体文件类型:图片（image）、语音（voice）、视频（video），普通文件(file)
	 * @return boolean|array
	 * {
	 *    "type": "image",
	 *    "media_id": "0000001",
	 *    "created_at": "1380000000"
	 * }
	 */
	public function uploadMedia($data, $type){
		if (!$this->access_token && !$this->checkAuth()) return false;
		$result = $this->http_post(self::API_URL_PREFIX.self::MEDIA_UPLOAD_URL.'access_token='.$this->access_token.'&type='.$type,$data,true);
		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;
	}

	/**
	 * 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 $result;
		}
		return false;
	}

	/**
	 * 获取企业微信服务器IP地址列表
	 * @return array('127.0.0.1','127.0.0.1')
	 */
	public function getServerIp(){
		if (!$this->access_token && !$this->checkAuth()) return false;
		$result = $this->http_get(self::API_URL_PREFIX.self::CALLBACKSERVER_GET_URL.'access_token='.$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['ip_list'];
		}
		return false;
	}

	/**
	 * 创建部门
	 * @param array $data 	结构体为:
	 * array (
	 *     "name" => "邮箱产品组",   //部门名称
	 *     "parentid" => "1"         //父部门id
	 *     "order" =>  "1",            //(非必须)在父部门中的次序。从1开始，数字越大排序越靠后
	 * )
	 * @return boolean|array
	 * 成功返回结果
	 * {
 	 *   "errcode": 0,        //返回码
	 *   "errmsg": "created",  //对返回码的文本描述内容
 	 *   "id": 2               //创建的部门id。
	 * }
	 */
	public function createDepartment($data){
	    if (!$this->access_token && !$this->checkAuth()) return false;
	    $result = $this->http_post(self::API_URL_PREFIX.self::DEPARTMENT_CREATE_URL.'access_token='.$this->access_token,self::json_encode($data));
	    if ($result)
	    {
	        $json = json_decode($result,true);
	        if (!$json || !empty($json['errcode']) || $json['errcode']!=0) {
	            $this->errCode = $json['errcode'];
	            $this->errMsg = $json['errmsg'];
	            return false;
	        }
	        return $json;
	    }
	    return false;
	}


	/**
	 * 更新部门
	 * @param array $data 	结构体为:
	 * array(
	 *     "id" => "1"               //(必须)部门id
	 *     "name" =>  "邮箱产品组",   //(非必须)部门名称
	 *     "parentid" =>  "1",         //(非必须)父亲部门id。根部门id为1
	 *     "order" =>  "1",            //(非必须)在父部门中的次序。从1开始，数字越大排序越靠后
	 * )
	 * @return boolean|array 成功返回结果
	 * {
	 *   "errcode": 0,        //返回码
	 *   "errmsg": "updated"  //对返回码的文本描述内容
	 * }
	 */
	public function updateDepartment($data){
	    if (!$this->access_token && !$this->checkAuth()) return false;
	    $result = $this->http_post(self::API_URL_PREFIX.self::DEPARTMENT_UPDATE_URL.'access_token='.$this->access_token,self::json_encode($data));
	    if ($result)
	    {
	        $json = json_decode($result,true);
	        if (!$json || !empty($json['errcode']) || $json['errcode']!=0) {
	            $this->errCode = $json['errcode'];
	            $this->errMsg = $json['errmsg'];
	            return false;
	        }
	        return $json;
	    }
	    return false;
	}

	/**
	 * 删除部门
	 * @param $id
	 * @return boolean|array 成功返回结果
	 * {
	 *   "errcode": 0,        //返回码
	 *   "errmsg": "deleted"  //对返回码的文本描述内容
	 * }
	 */
	public function deleteDepartment($id){
	    if (!$this->access_token && !$this->checkAuth()) return false;
	    $result = $this->http_get(self::API_URL_PREFIX.self::DEPARTMENT_DELETE_URL.'access_token='.$this->access_token.'&id='.$id);
	    if ($result)
	    {
	        $json = json_decode($result,true);
	        if (!$json || !empty($json['errcode']) || $json['errcode']!=0) {
	            $this->errCode = $json['errcode'];
	            $this->errMsg = $json['errmsg'];
	            return false;
	        }
	        return $json;
	    }
	    return false;
	}

	/**
	 * 移动部门
	 * @param $data
	 * array(
	 *    "department_id" => "5",	//所要移动的部门
	 *    "to_parentid" => "2",		//想移动到的父部门节点，根部门为1
	 *    "to_position" => "1"		//(非必须)想移动到的父部门下的位置，1表示最上方，往后位置为2，3，4，以此类推，默认为1
	 * )
	 * @return boolean|array 成功返回结果
	 * {
	 *   "errcode": 0,        //返回码
	 *   "errmsg": "ok"  //对返回码的文本描述内容
	 * }
	 */
	public function moveDepartment($data){
	    if (!$this->access_token && !$this->checkAuth()) return false;
	    $result = $this->http_post(self::API_URL_PREFIX.self::DEPARTMENT_MOVE_URL.'access_token='.$this->access_token,self::json_encode($data));
	    if ($result)
	    {
	        $json = json_decode($result,true);
	        if (!$json || !empty($json['errcode']) || $json['errcode']!=0) {
	            $this->errCode = $json['errcode'];
	            $this->errMsg = $json['errmsg'];
	            return false;
	        }
	        return $json;
	    }
	    return false;
	}

	/**
	 * 获取部门列表
	 * @return boolean|array	 成功返回结果
	 * {
	 *    "errcode": 0,
	 *    "errmsg": "ok",
	 *    "department": [          //部门列表数据。以部门的order字段从小到大排列
	 *        {
	 *            "id": 1,
	 *            "name": "广州研发中心",
	 *            "parentid": 0,
	 *            "order": 40
	 *        },
 	 *       {
	 *          "id": 2
  	 *          "name": "邮箱产品部",
  	 *          "parentid": 1,
	 *          "order": 40
 	 *       }
	 *    ]
	 * }
	 */
	public function getDepartment(){
	    if (!$this->access_token && !$this->checkAuth()) return false;
	    $result = $this->http_get(self::API_URL_PREFIX.self::DEPARTMENT_LIST_URL.'access_token='.$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 $json;
	    }
	    return false;
	}

	/**
	 * 创建成员
	 * @param array $data 	结构体为:
     * array(
     *    "userid" => "zhangsan",
     *    "name" => "张三",
     *    "department" => [1, 2],
     *    "position" => "产品经理",
     *    "mobile" => "15913215421",
     *    "gender" => 1,     //性别。gender=0表示男，=1表示女
     *    "tel" => "62394",
     *    "email" => "zhangsan@gzdev.com",
     *    "weixinid" => "zhangsan4dev"
     * )
	 * @return boolean|array
	 * 成功返回结果
	 * {
	 *   "errcode": 0,        //返回码
	 *   "errmsg": "created",  //对返回码的文本描述内容
	 * }
	 */
	public function createUser($data){
	    if (!$this->access_token && !$this->checkAuth()) return false;
	    $result = $this->http_post(self::API_URL_PREFIX.self::USER_CREATE_URL.'access_token='.$this->access_token,self::json_encode($data));
	    if ($result)
	    {
	        $json = json_decode($result,true);
	        if (!$json || !empty($json['errcode']) || $json['errcode']!=0) {
	            $this->errCode = $json['errcode'];
	            $this->errMsg = $json['errmsg'];
	            return false;
	        }
	        return $json;
	    }
	    return false;
	}


	/**
	 * 更新成员
	 * @param array $data 	结构体为:
     * array(
     *    "userid" => "zhangsan",
     *    "name" => "张三",
     *    "department" => [1, 2],
     *    "position" => "产品经理",
     *    "mobile" => "15913215421",
     *    "gender" => 1,     //性别。gender=0表示男，=1表示女
     *    "tel" => "62394",
     *    "email" => "zhangsan@gzdev.com",
     *    "weixinid" => "zhangsan4dev"
     * )
	 * @return boolean|array 成功返回结果
	 * {
	 *   "errcode": 0,        //返回码
	 *   "errmsg": "updated"  //对返回码的文本描述内容
	 * }
	 */
	public function updateUser($data){
	    if (!$this->access_token && !$this->checkAuth()) return false;
	    $result = $this->http_post(self::API_URL_PREFIX.self::USER_UPDATE_URL.'access_token='.$this->access_token,self::json_encode($data));
	    if ($result)
	    {
	        $json = json_decode($result,true);
	        if (!$json || !empty($json['errcode']) || $json['errcode']!=0) {
	            $this->errCode = $json['errcode'];
	            $this->errMsg = $json['errmsg'];
	            return false;
	        }
	        return $json;
	    }
	    return false;
	}

	/**
	 * 删除成员
	 * @param $userid  员工UserID。对应管理端的帐号
	 * @return boolean|array 成功返回结果
	 * {
	 *   "errcode": 0,        //返回码
	 *   "errmsg": "deleted"  //对返回码的文本描述内容
	 * }
	 */
	public function deleteUser($userid){
	    if (!$this->access_token && !$this->checkAuth()) return false;
	    $result = $this->http_get(self::API_URL_PREFIX.self::USER_DELETE_URL.'access_token='.$this->access_token.'&userid='.$userid);
	    if ($result)
	    {
	        $json = json_decode($result,true);
	        if (!$json || !empty($json['errcode']) || $json['errcode']!=0) {
	            $this->errCode = $json['errcode'];
	            $this->errMsg = $json['errmsg'];
	            return false;
	        }
	        return $json;
	    }
	    return false;
	}

	/**
	 * 批量删除成员
	 * @param array $userid  员工UserID数组。对应管理端的帐号
	 * {
	 *     'userid1',
	 *     'userid2',
	 *     'userid3',
	 * }
	 * @return boolean|array 成功返回结果
	 * {
	 *   "errcode": 0,        //返回码
	 *   "errmsg": "deleted"  //对返回码的文本描述内容
	 * }
	 */
	public function deleteUsers($userids){
	    if (!$userids) return false;
	    $data = array('useridlist'=>$userids);
	    if (!$this->access_token && !$this->checkAuth()) return false;
	    $result = $this->http_post(self::API_URL_PREFIX.self::USER_BATCHDELETE_URL.'access_token='.$this->access_token,self::json_encode($data));
	    if ($result)
	    {
	        $json = json_decode($result,true);
	        if (!$json || !empty($json['errcode']) || $json['errcode']!=0) {
	            $this->errCode = $json['errcode'];
	            $this->errMsg = $json['errmsg'];
	            return false;
	        }
	        return $json;
	    }
	    return false;
	}

	/**
	 * 获取成员信息
	 * @param $userid  员工UserID。对应管理端的帐号
	 * @return boolean|array	 成功返回结果
	 * {
	 *    "errcode": 0,
	 *    "errmsg": "ok",
	 *    "userid": "zhangsan",
	 *    "name": "李四",
	 *    "department": [1, 2],
	 *    "position": "后台工程师",
	 *    "mobile": "15913215421",
	 *    "gender": 1,     //性别。gender=0表示男，=1表示女
	 *    "tel": "62394",
	 *    "email": "zhangsan@gzdev.com",
	 *    "weixinid": "lisifordev",        //微信号
	 *    "avatar": "http://wx.qlogo.cn/mmopen/ajNVdqHZLLA3W..../0",   //头像url。注：如果要获取小图将url最后的"/0"改成"/64"即可
	 *    "status": 1      //关注状态: 1=已关注，2=已冻结，4=未关注
	 *    "extattr": {"attrs":[{"name":"爱好","value":"旅游"},{"name":"卡号","value":"1234567234"}]}
	 * }
	 */
	public function getUserInfo($userid){
	    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.'&userid='.$userid);
	    if ($result)
	    {
	        $json = json_decode($result,true);
	        if (!$json || !empty($json['errcode']) || $json['errcode']!=0) {
	            $this->errCode = $json['errcode'];
	            $this->errMsg = $json['errmsg'];
	            return false;
	        }
	        return $json;
	    }
	    return false;
	}

	/**
	 * 获取部门成员
	 * @param $department_id   部门id
	 * @param $fetch_child     1/0：是否递归获取子部门下面的成员
	 * @param $status          0获取全部员工，1获取已关注成员列表，2获取禁用成员列表，4获取未关注成员列表。status可叠加
	 * @return boolean|array	 成功返回结果
	 * {
	 *    "errcode": 0,
	 *    "errmsg": "ok",
	 *    "userlist": [
	 *            {
	 *                   "userid": "zhangsan",
	 *                   "name": "李四"
	 *            }
	 *      ]
	 * }
	 */
	public function getUserList($department_id,$fetch_child=0,$status=0){
	    if (!$this->access_token && !$this->checkAuth()) return false;
	    $result = $this->http_get(self::API_URL_PREFIX.self::USER_LIST_URL.'access_token='.$this->access_token
	            .'&department_id='.$department_id.'&fetch_child='.$fetch_child.'&status='.$status);
	    if ($result)
	    {
	        $json = json_decode($result,true);
	        if (!$json || !empty($json['errcode']) || $json['errcode']!=0) {
	            $this->errCode = $json['errcode'];
	            $this->errMsg = $json['errmsg'];
	            return false;
	        }
	        return $json;
	    }
	    return false;
	}

	/**
	 * 获取部门成员详情
	 * @param $department_id   部门id
	 * @param $fetch_child     1/0：是否递归获取子部门下面的成员
	 * @param $status          0获取全部员工，1获取已关注成员列表，2获取禁用成员列表，4获取未关注成员列表。status可叠加
	 * @return boolean|array	 成功返回结果
	 * {
	 *    "errcode": 0,
	 *    "errmsg": "ok",
	 *    "userlist": [
	 *            {
	 *                   "userid": "zhangsan",
	 *                   "name": "李四",
	 *                   "department": [1, 2],
	 *                   "position": "后台工程师",
	 *                   "mobile": "15913215421",
	 *                   "gender": 1,     //性别。gender=0表示男，=1表示女
	 *                   "tel": "62394",
	 *                   "email": "zhangsan@gzdev.com",
	 *                   "weixinid": "lisifordev",        //微信号
	 *                   "avatar": "http://wx.qlogo.cn/mmopen/ajNVdqHZLLA3W..../0",   //头像url。注：如果要获取小图将url最后的"/0"改成"/64"即可
	 *                   "status": 1      //关注状态: 1=已关注，2=已冻结，4=未关注
	 *                   "extattr": {"attrs":[{"name":"爱好","value":"旅游"},{"name":"卡号","value":"1234567234"}]}
	 *            }
	 *      ]
	 * }
	 */
	public function getUserListInfo($department_id,$fetch_child=0,$status=0){
	    if (!$this->access_token && !$this->checkAuth()) return false;
	    $result = $this->http_get(self::API_URL_PREFIX.self::USER_LIST_INFO_URL.'access_token='.$this->access_token
	            .'&department_id='.$department_id.'&fetch_child='.$fetch_child.'&status='.$status);
	    if ($result)
	    {
	        $json = json_decode($result,true);
	        if (!$json || !empty($json['errcode']) || $json['errcode']!=0) {
	            $this->errCode = $json['errcode'];
	            $this->errMsg = $json['errmsg'];
	            return false;
	        }
	        return $json;
	    }
	    return false;
	}

	/**
	 * 根据code获取成员信息
	 * 通过Oauth2.0或者设置了二次验证时获取的code，用于换取成员的UserId和DeviceId
	 *
	 * @param $code        Oauth2.0或者二次验证时返回的code值
	 * @param $agentid     跳转链接时所在的企业应用ID，未填则默认为当前配置的应用id
	 * @return boolean|array 成功返回数组
	 * array(
	 *     'UserId' => 'USERID',       //员工UserID
	 *     'DeviceId' => 'DEVICEID'    //手机设备号(由微信在安装时随机生成)
	 * )
	 */
	public function getUserId($code,$agentid=0){
	    if (!$agentid) $agentid=$this->agentid;
	    if (!$this->access_token && !$this->checkAuth()) return false;
	    $result = $this->http_get(self::API_URL_PREFIX.self::USER_GETINFO_URL.'access_token='.$this->access_token.'&code='.$code.'&agentid='.$agentid);
	    if ($result)
	    {
	        $json = json_decode($result,true);
	        if (!$json || !empty($json['errcode']) || $json['errcode']!=0) {
	            $this->errCode = $json['errcode'];
	            $this->errMsg = $json['errmsg'];
	            return false;
	        }
	        return $json;
	    }
	    return false;
	}

	/**
	 * 邀请成员关注
	 * 向未关注企业号的成员发送关注邀请。认证号优先判断顺序weixinid>手机号>邮箱绑定>邮件；非认证号只能邮件邀请
	 *
	 * @param $userid        用户的userid
	 * @param $invite_tips   推送到微信上的提示语（只有认证号可以使用）。当使用微信推送时，该字段默认为“请关注XXX企业号”，邮件邀请时，该字段无效。
	 * @return boolean|array 成功返回数组
	 * array(
	 *     'errcode' => 0,
	 *     'errmsg' => 'ok',
	 *     'type' => 1         //邀请方式 1.微信邀请 2.邮件邀请
	 * )
	 */
	public function sendInvite($userid,$invite_tips=''){
	    $data = array( 'userid' => $userid );
	    if (!$invite_tips) {
	    	$data['invite_tips'] = $invite_tips;
	    }
	    if (!$this->access_token && !$this->checkAuth()) return false;
	    $result = $this->http_post(self::API_URL_PREFIX.self::USER_INVITE_URL.'access_token='.$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;
	}

	/**
	 * 创建标签
	 * @param array $data 	结构体为:
	 * array(
	 *    "tagname" => "UI"
	 * )
	 * @return boolean|array
	 * 成功返回结果
	 * {
	 *   "errcode": 0,        //返回码
	 *   "errmsg": "created",  //对返回码的文本描述内容
	 *   "tagid": "1"
	 * }
	 */
	public function createTag($data){
	    if (!$this->access_token && !$this->checkAuth()) return false;
	    $result = $this->http_post(self::API_URL_PREFIX.self::TAG_CREATE_URL.'access_token='.$this->access_token,self::json_encode($data));
	    if ($result)
	    {
	        $json = json_decode($result,true);
	        if (!$json || !empty($json['errcode']) || $json['errcode']!=0) {
	            $this->errCode = $json['errcode'];
	            $this->errMsg = $json['errmsg'];
	            return false;
	        }
	        return $json;
	    }
	    return false;
	}

	/**
	 * 更新标签
	 * @param array $data 	结构体为:
	 * array(
	 *    "tagid" => "1",
	 *    "tagname" => "UI design"
	 * )
	 * @return boolean|array 成功返回结果
	 * {
	 *   "errcode": 0,        //返回码
	 *   "errmsg": "updated"  //对返回码的文本描述内容
	 * }
	 */
	public function updateTag($data){
	    if (!$this->access_token && !$this->checkAuth()) return false;
	    $result = $this->http_post(self::API_URL_PREFIX.self::TAG_UPDATE_URL.'access_token='.$this->access_token,self::json_encode($data));
	    if ($result)
	    {
	        $json = json_decode($result,true);
	        if (!$json || !empty($json['errcode']) || $json['errcode']!=0) {
	            $this->errCode = $json['errcode'];
	            $this->errMsg = $json['errmsg'];
	            return false;
	        }
	        return $json;
	    }
	    return false;
	}

	/**
	 * 删除标签
	 * @param $tagid  标签TagID
	 * @return boolean|array 成功返回结果
	 * {
	 *   "errcode": 0,        //返回码
	 *   "errmsg": "deleted"  //对返回码的文本描述内容
	 * }
	 */
	public function deleteTag($tagid){
	    if (!$this->access_token && !$this->checkAuth()) return false;
	    $result = $this->http_get(self::API_URL_PREFIX.self::TAG_DELETE_URL.'access_token='.$this->access_token.'&tagid='.$tagid);
	    if ($result)
	    {
	        $json = json_decode($result,true);
	        if (!$json || !empty($json['errcode']) || $json['errcode']!=0) {
	            $this->errCode = $json['errcode'];
	            $this->errMsg = $json['errmsg'];
	            return false;
	        }
	        return $json;
	    }
	    return false;
	}

	/**
	 * 获取标签成员
	 * @param $tagid  标签TagID
	 * @return boolean|array	 成功返回结果
	 * {
	 *    "errcode": 0,
	 *    "errmsg": "ok",
	 *    "userlist": [
	 *          {
	 *              "userid": "zhangsan",
	 *              "name": "李四"
	 *          }
	 *      ]
	 * }
	 */
	public function getTag($tagid){
	    if (!$this->access_token && !$this->checkAuth()) return false;
	    $result = $this->http_get(self::API_URL_PREFIX.self::TAG_GET_URL.'access_token='.$this->access_token.'&tagid='.$tagid);
	    if ($result)
	    {
	        $json = json_decode($result,true);
	        if (!$json || !empty($json['errcode']) || $json['errcode']!=0) {
	            $this->errCode = $json['errcode'];
	            $this->errMsg = $json['errmsg'];
	            return false;
	        }
	        return $json;
	    }
	    return false;
	}

	/**
	 * 增加标签成员
	 * @param array $data 	结构体为:
	 * array (
	 *    "tagid" => "1",
	 *    "userlist" => array(    //企业员工ID列表
	 *         "user1",
	 *         "user2"
	 *     )
	 * )
	 * @return boolean|array
	 * 成功返回结果
	 * {
	 *   "errcode": 0,        //返回码
	 *   "errmsg": "ok",  //对返回码的文本描述内容
	 *   "invalidlist"："usr1|usr2|usr"     //若部分userid非法，则会有此段。不在权限内的员工ID列表，以“|”分隔
	 * }
	 */
	public function addTagUser($data){
	    if (!$this->access_token && !$this->checkAuth()) return false;
	    $result = $this->http_post(self::API_URL_PREFIX.self::TAG_ADDUSER_URL.'access_token='.$this->access_token,self::json_encode($data));
	    if ($result)
	    {
	        $json = json_decode($result,true);
	        if (!$json || !empty($json['errcode']) || $json['errcode']!=0) {
	            $this->errCode = $json['errcode'];
	            $this->errMsg = $json['errmsg'];
	            return false;
	        }
	        return $json;
	    }
	    return false;
	}

	/**
	 * 删除标签成员
	 * @param array $data 	结构体为:
	 * array (
	 *    "tagid" => "1",
	 *    "userlist" => array(    //企业员工ID列表
	 *         "user1",
	 *         "user2"
	 *     )
	 * )
	 * @return boolean|array
	 * 成功返回结果
	 * {
	 *   "errcode": 0,        //返回码
	 *   "errmsg": "deleted",  //对返回码的文本描述内容
	 *   "invalidlist"："usr1|usr2|usr"     //若部分userid非法，则会有此段。不在权限内的员工ID列表，以“|”分隔
	 * }
	 */
	public function delTagUser($data){
	    if (!$this->access_token && !$this->checkAuth()) return false;
	    $result = $this->http_post(self::API_URL_PREFIX.self::TAG_DELUSER_URL.'access_token='.$this->access_token,self::json_encode($data));
	    if ($result)
	    {
	        $json = json_decode($result,true);
	        if (!$json || !empty($json['errcode']) || $json['errcode']!=0) {
	            $this->errCode = $json['errcode'];
	            $this->errMsg = $json['errmsg'];
	            return false;
	        }
	        return $json;
	    }
	    return false;
	}

	/**
	 * 获取标签列表
	 * @return boolean|array	 成功返回数组结果，这里附上json样例
	 * {
	 *    "errcode": 0,
	 *    "errmsg": "ok",
	 *    "taglist":[
	 *       {"tagid":1,"tagname":"a"},
	 *       {"tagid":2,"tagname":"b"}
	 *    ]
	 * }
	 */
	public function getTagList(){
	    if (!$this->access_token && !$this->checkAuth()) return false;
	    $result = $this->http_get(self::API_URL_PREFIX.self::TAG_LIST_URL.'access_token='.$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 $json;
	    }
	    return false;
	}

	/**
	 * 主动发送信息接口
	 * @param array $data 	结构体为:
	 * array(
	 *         "touser" => "UserID1|UserID2|UserID3",
	 *         "toparty" => "PartyID1|PartyID2 ",
	 *         "totag" => "TagID1|TagID2 ",
	 *         "safe":"0"			//是否为保密消息，对于news无效
	 *         "agentid" => "001",	//应用id
	 *         "msgtype" => "text",  //根据信息类型，选择下面对应的信息结构体
	 *
	 *         "text" => array(
	 *                 "content" => "Holiday Request For Pony(http://xxxxx)"
	 *         ),
	 *
	 *         "image" => array(
	 *                 "media_id" => "MEDIA_ID"
	 *         ),
	 *
	 *         "voice" => array(
	 *                 "media_id" => "MEDIA_ID"
	 *         ),
	 *
	 *         " video" => array(
	 *                 "media_id" => "MEDIA_ID",
	 *                 "title" => "Title",
	 *                 "description" => "Description"
	 *         ),
	 *
	 *         "file" => array(
	 *                 "media_id" => "MEDIA_ID"
	 *         ),
	 *
	 *         "news" => array(			//不支持保密
	 *                 "articles" => array(    //articles  图文消息，一个图文消息支持1到10个图文
	 *                     array(
	 *                         "title" => "Title",             //标题
	 *                         "description" => "Description", //描述
	 *                         "url" => "URL",                 //点击后跳转的链接。可根据url里面带的code参数校验员工的真实身份。
	 *                         "picurl" => "PIC_URL",          //图文消息的图片链接,支持JPG、PNG格式，较好的效果为大图640*320，
	 *                                                         //小图80*80。如不填，在客户端不显示图片
	 *                     ),
	 *                 )
	 *         ),
	 *
	 *         "mpnews" => array(
	 *                 "articles" => array(    //articles  图文消息，一个图文消息支持1到10个图文
	 *                     array(
	 *                         "title" => "Title",             //图文消息的标题
	 *                         "thumb_media_id" => "id",       //图文消息缩略图的media_id
	 *                         "author" => "Author",           //图文消息的作者(可空)
	 *                         "content_source_url" => "URL",  //图文消息点击“阅读原文”之后的页面链接(可空)
	 *                         "content" => "Content"          //图文消息的内容，支持html标签
	 *                         "digest" => "Digest description",   //图文消息的描述
	 *                         "show_cover_pic" => "0"         //是否显示封面，1为显示，0为不显示(可空)
	 *                     ),
	 *                 )
	 *         )
	 * )
	 * 请查看官方开发文档中的 发送消息 -> 消息类型及数据格式
	 *
	 * @return boolean|array
	 * 如果对应用或收件人、部门、标签任何一个无权限，则本次发送失败；
	 * 如果收件人、部门或标签不存在，发送仍然执行，但返回无效的部分。
	 * {
	 *    "errcode": 0,
	 *    "errmsg": "ok",
	 *    "invaliduser": "UserID1",
	 *    "invalidparty":"PartyID1",
	 *    "invalidtag":"TagID1"
	 * }
	 */
	public function sendMessage($data){
	    if (!$this->access_token && !$this->checkAuth()) return false;
	    $result = $this->http_post(self::API_URL_PREFIX.self::MASS_SEND_URL.'access_token='.$this->access_token,self::json_encode($data));
	    if ($result)
	    {
	        $json = json_decode($result,true);
	        if (!$json || !empty($json['errcode']) || $json['errcode']!=0) {
	            $this->errCode = $json['errcode'];
	            $this->errMsg = $json['errmsg'];
	            return false;
	        }
	        return $json;
	    }
	    return false;
	}

	/**
	 * 二次验证
	 * 企业在开启二次验证时，必须填写企业二次验证页面的url。
	 * 当员工绑定通讯录中的帐号后，会收到一条图文消息，
	 * 引导员工到企业的验证页面验证身份，企业在员工验证成功后，
	 * 调用如下接口即可让员工关注成功。
	 *
	 * @param $userid
	 * @return boolean|array 成功返回结果
	 * {
	 *   "errcode": 0,        //返回码
	 *   "errmsg": "ok"  //对返回码的文本描述内容
	 * }
	 */
	public function authSucc($userid){
	    if (!$this->access_token && !$this->checkAuth()) return false;
	    $result = $this->http_get(self::API_URL_PREFIX.self::AUTHSUCC_URL.'access_token='.$this->access_token.'&userid='.$userid);
	    if ($result)
	    {
	        $json = json_decode($result,true);
	        if (!$json || !empty($json['errcode']) || $json['errcode']!=0) {
	            $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
	 * @param string $state 重定向后会带上state参数，企业可以填写a-zA-Z0-9的参数值
	 * @return string
	 */
	public function getOauthRedirect($callback,$state='STATE',$scope='snsapi_base'){
	    return self::OAUTH_PREFIX.self::OAUTH_AUTHORIZE_URL.'appid='.$this->appid.'&redirect_uri='.urlencode($callback).'&response_type=code&scope='.$scope.'&state='.$state.'#wechat_redirect';
	}

}



/**
 * PKCS7Encoder class
 *
 * 提供基于PKCS7算法的加解密接口.
 */
class PKCS7Encoder
{
    public static $block_size = 32;

    /**
     * 对需要加密的明文进行填充补位
     * @param $text 需要进行填充补位操作的明文
     * @return 补齐明文字符串
     */
    function encode($text)
    {
        $block_size = PKCS7Encoder::$block_size;
        $text_length = strlen($text);
        //计算需要填充的位数
        $amount_to_pad = PKCS7Encoder::$block_size - ($text_length % PKCS7Encoder::$block_size);
        if ($amount_to_pad == 0) {
            $amount_to_pad = PKCS7Encoder::block_size;
        }
        //获得补位所用的字符
        $pad_chr = chr($amount_to_pad);
        $tmp = "";
        for ($index = 0; $index < $amount_to_pad; $index++) {
            $tmp .= $pad_chr;
        }
        return $text . $tmp;
    }

    /**
     * 对解密后的明文进行补位删除
     * @param decrypted 解密后的明文
     * @return 删除填充补位后的明文
     */
    function decode($text)
    {

        $pad = ord(substr($text, -1));
        if ($pad < 1 || $pad > PKCS7Encoder::$block_size) {
            $pad = 0;
        }
        return substr($text, 0, (strlen($text) - $pad));
    }

}

/**
 * Prpcrypt class
 *
 * 提供接收和推送给公众平台消息的加解密接口.
 */
class Prpcrypt
{
    public $key;

    function __construct($k) {
        $this->key = base64_decode($k . "=");
    }

    /**
     * 兼容老版本php构造函数，不能在 __construct() 方法前边，否则报错
     */
    function Prpcrypt($k)
    {
        $this->key = base64_decode($k . "=");
    }

    /**
     * 对明文进行加密
     * @param string $text 需要加密的明文
     * @return string 加密后的密文
     */
    public function encrypt($text, $appid)
    {

        try {
            //获得16位随机字符串，填充到明文之前
            $random = $this->getRandomStr();//"aaaabbbbccccdddd";
            $text = $random . pack("N", strlen($text)) . $text . $appid;
            // 网络字节序
            $size = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC);
            $module = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_CBC, '');
            $iv = substr($this->key, 0, 16);
            //使用自定义的填充方式对明文进行补位填充
            $pkc_encoder = new PKCS7Encoder;
            $text = $pkc_encoder->encode($text);
            mcrypt_generic_init($module, $this->key, $iv);
            //加密
            $encrypted = mcrypt_generic($module, $text);
            mcrypt_generic_deinit($module);
            mcrypt_module_close($module);

            //			print(base64_encode($encrypted));
            //使用BASE64对加密后的字符串进行编码
            return array(ErrorCode::$OK, base64_encode($encrypted));
        } catch (Exception $e) {
            //print $e;
            return array(ErrorCode::$EncryptAESError, null);
        }
    }

    /**
     * 对密文进行解密
     * @param string $encrypted 需要解密的密文
     * @return string 解密得到的明文
     */
    public function decrypt($encrypted, $appid)
    {

        try {
            //使用BASE64对需要解密的字符串进行解码
            $ciphertext_dec = base64_decode($encrypted);
            $module = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_CBC, '');
            $iv = substr($this->key, 0, 16);
            mcrypt_generic_init($module, $this->key, $iv);
            //解密
            $decrypted = mdecrypt_generic($module, $ciphertext_dec);
            mcrypt_generic_deinit($module);
            mcrypt_module_close($module);
        } catch (Exception $e) {
            return array(ErrorCode::$DecryptAESError, null);
        }


        try {
            //去除补位字符
            $pkc_encoder = new PKCS7Encoder;
            $result = $pkc_encoder->decode($decrypted);
            //去除16位随机字符串,网络字节序和AppId
            if (strlen($result) < 16)
                return "";
            $content = substr($result, 16, strlen($result));
            $len_list = unpack("N", substr($content, 0, 4));
            $xml_len = $len_list[1];
            $xml_content = substr($content, 4, $xml_len);
            $from_appid = substr($content, $xml_len + 4);
        } catch (Exception $e) {
            //print $e;
            return array(ErrorCode::$IllegalBuffer, null);
        }
        if ($from_appid != $appid)
            return array(ErrorCode::$ValidateAppidError, null);
        return array(0, $xml_content);

    }


    /**
     * 随机生成16位字符串
     * @return string 生成的字符串
     */
    function getRandomStr()
    {

        $str = "";
        $str_pol = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz";
        $max = strlen($str_pol) - 1;
        for ($i = 0; $i < 16; $i++) {
            $str .= $str_pol[mt_rand(0, $max)];
        }
        return $str;
    }

}

/**
 * error code
 * 仅用作类内部使用，不用于官方API接口的errCode码
 */
class ErrorCode
{
    public static $OK = 0;
    public static $ValidateSignatureError = 40001;
    public static $ParseXmlError = 40002;
    public static $ComputeSignatureError = 40003;
    public static $IllegalAesKey = 40004;
    public static $ValidateAppidError = 40005;
    public static $EncryptAESError = 40006;
    public static $DecryptAESError = 40007;
    public static $IllegalBuffer = 40008;
    public static $EncodeBase64Error = 40009;
    public static $DecodeBase64Error = 40010;
    public static $GenReturnXmlError = 40011;
    public static $errCode=array(
            '0'=>'无问题',
            '40001'=>'签名验证错误',
            '40002'=>'xml解析失败',
            '40003'=>'sha加密生成签名失败',
            '40004'=>'encodingAesKey 非法',
            '40005'=>'appid 校验错误',
            '40006'=>'aes 加密失败',
            '40007'=>'aes 解密失败',
            '40008'=>'解密后得到的buffer非法',
            '40009'=>'base64加密失败',
            '40010'=>'base64解密失败',
            '40011'=>'生成xml失败',
    );
    public static function getErrText($err) {
        if (isset(self::$errCode[$err])) {
            return self::$errCode[$err];
        }else {
            return false;
        };
    }
}
