diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..e970cbf
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,24 @@
+composer.lock
+
+runtime/*
+
+public/docs
+
+public/uploads
+
+gitc
+
+.idea/
+.env
+
+.DS_Store
+.project
+
+config/*_dev.php
+config/*_test.php
+
+plugins/*.zip
+
+node_modules
+package-lock.json
+
diff --git a/README.md b/README.md
index e1d651b..34ba54d 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,24 @@
 # About
+此项目是Fork自https://github.com/sbzhu/weworkapi_php。原项目基本无后续开发，因此自己加了一些新功能进来。
+主要增加的有：
+
+1. 互联企业相关（注：小程序暂不支持互联企业用户，因为无法解code）：参考 api\examples\testLink.php
+    * 互联企业消息推送
+    * 互联企业的通讯录信息获取（成员、部门等）
+1. 消息发送：增加了新进企业微信消息发送功能：
+    * MarkDown消息发送；
+    * 小程序消息发送；
+    * 任务卡片消息发送（需要企业微信应用有回调功能支持）；
+
+## 其他新增功能：
+请进入 https://github.com/logmecn/weworkapi 查看，除以上功能外还有：
+1. 使用Redis缓存。在 config 文件中修改配置。
+1. 使用composer加载
+
+后续会继续增加丰富其功能。   
+如果有需要新增功能，请发 issue 或 PR，会第一时间回复。
+
+# 原说明
 weworkapi_php 是为了简化开发者对企业微信API接口的使用而设计的，API调用库系列之php版本    
 包括企业API接口、消息回调处理方法、第三方开放接口等    
 本库仅做示范用，并不保证完全无bug；  
@@ -12,7 +32,7 @@ golang : https://github.com/sbzhu/weworkapi_golang  ryanjelin@tencent.com(企业
 golang : https://github.com/doubliekill/EnterpriseWechatSDK  1006401052yh@gmail.com(个人开发者)  
 
 # Requirement
-经测试，PHP 5.3.3 ~ 7.2.0 版本均可使用
+PHP 5.4 ~ 7.4 版本均可使用，PHP8.0未测试，理论上应该也ok。
 
 # Director 
 
@@ -75,7 +95,6 @@ $api->dosomething()
 当然，如果要更严格的做的话，建议自行修改，```全局缓存token，比如存redis、存文件等```，失效周期设置为2小时。
 
 # Contact us
-abelzhu@tencent.com  
 xiqunpan@tencent.com  
 
 # 
diff --git a/api/datastructure/Link_Message.class.php b/api/datastructure/Link_Message.class.php
new file mode 100644
index 0000000..e9e4cc7
--- /dev/null
+++ b/api/datastructure/Link_Message.class.php
@@ -0,0 +1,48 @@
+<?php
+
+include_once(__DIR__."/../../utils/error.inc.php");
+include_once(__DIR__."/../../utils/Utils.class.php");
+
+class Link_Message
+{
+    public $sendToAll = false; // bool, 是否全员发送, 即文档所谓 @all
+    public $touser = array(); // string array
+    public $toparty = array(); // uint array
+    public $totag = array(); // uint array
+    public $agentid = null; // uint
+    public $safe = null; // uint, 表示是否是保密消息，0表示否，1表示是，默认0
+    public $messageContent = null; // xxxMessageContent
+
+    public function CheckMessageSendArgs()
+    {
+        if (count($this->touser) > 1000) throw new QyApiError("touser should be no more than 1000");
+        if (count($this->toparty) > 100) throw new QyApiError("toparty should be no more than 100");
+        if (count($this->totag) > 100) throw new QyApiError("toparty should be no more than 100");
+
+        if (is_null($this->messageContent)) throw new QyApiError("messageContent is empty");
+        $this->messageContent->CheckMessageSendArgs();
+    }
+
+    public function Message2Array()
+    {
+        $args = array();
+        Utils::setIfNotNull($this->touser, "touser", $args);
+        Utils::setIfNotNull($this->toparty, "toparty", $args);
+        Utils::setIfNotNull($this->totag, "totag", $args);
+        
+        //Utils::setIfNotNull($this->toall, "toall", $args);
+        Utils::setIfNotNull($this->agentid, "agentid", $args);
+        Utils::setIfNotNull($this->safe, "safe", $args);
+
+        $this->messageContent->MessageContent2Array($args);
+
+        return $args;
+    }
+
+     private  function setIfNotNull2array($var, $name, &$args)
+        {
+            if (!is_null($var)) {
+                $args[$name] = $var;
+            }else $args[$name] = [];
+    }
+}
\ No newline at end of file
diff --git a/api/datastructure/Message.class.php b/api/datastructure/Message.class.php
index 6c59b68..b503357 100644
--- a/api/datastructure/Message.class.php
+++ b/api/datastructure/Message.class.php
@@ -12,6 +12,9 @@ class Message
     public $agentid = null; // uint
     public $safe = null; // uint, 表示是否是保密消息，0表示否，1表示是，默认0 
     public $messageContent = null; // xxxMessageContent
+    public $enable_id_trans = 0; // 表示是否开启id转译，0表示否，1表示是，默认0
+    public $enable_duplicate_check = 0; //	表示是否开启重复消息检查，0表示否，1表示是，默认0
+    public $duplicate_check_interval = 1800; //表示是否重复消息检查的时间间隔，默认1800s，最大不超过4小时
 
 	public function CheckMessageSendArgs()
     { 
@@ -55,6 +58,10 @@ public function Message2Array()
         Utils::setIfNotNull($this->agentid, "agentid", $args);
         Utils::setIfNotNull($this->safe, "safe", $args);
 
+        Utils::setIfNotNull($this->enable_id_trans, "enable_id_trans", $args);
+        Utils::setIfNotNull($this->enable_duplicate_check, "enable_duplicate_check", $args);
+        Utils::setIfNotNull($this->duplicate_check_interval, "duplicate_check_interval", $args);
+
         $this->messageContent->MessageContent2Array($args);
 
         return $args;
diff --git a/api/datastructure/MessageExt.class.php b/api/datastructure/MessageExt.class.php
new file mode 100644
index 0000000..cac8189
--- /dev/null
+++ b/api/datastructure/MessageExt.class.php
@@ -0,0 +1,168 @@
+<?php
+/*
+ * 新增几个新加企业微信发送消息的功能，原基础库中没有。
+ * "msgtype" : "interactive_taskcard", 任务卡片消息
+ *  "msgtype" : "miniprogram_notice", 小程序通知消息
+ * "msgtype": "markdown",markdown消息
+ * author ywq
+ * date: 2021/07/15
+ */
+include_once(__DIR__."/../../utils/error.inc.php");
+include_once(__DIR__."/../../utils/Utils.class.php");
+
+/*
+ * MD文档消息类型
+ */
+class MDMessageContent
+{
+    public $msgtype = "markdown";
+    private $content = null; // string
+
+    public function __construct($content=null)
+    {
+        $this->content = $content;
+    }
+
+    public function CheckMessageSendArgs()
+    {
+        if (mb_detect_encoding($this->content, 'UTF-8') != 'UTF-8') {
+            throw new QyApiError("invalid MarkDown is not UTF-8");
+        }
+        $len = strlen($this->content);
+        if ($len == 0 || $len > 2048) {
+            throw new QyApiError("invalid MarkDown content length " . $len);
+        }
+    }
+
+    public function MessageContent2Array(&$arr)
+    {
+        Utils::setIfNotNull($this->msgtype, "msgtype", $arr);
+
+        $contentArr = array("content" => $this->content);
+        Utils::setIfNotNull($contentArr, $this->msgtype, $arr);
+    }
+}
+
+/*
+ * 小程序消息类型
+ */
+class MinaMessageContent
+{
+    public $msgtype = "miniprogram_notice";
+
+    public function __construct($appid=null, $page=null, $title=null,
+            $description=null, bool $emphasis_first_item=true, array $content_item=[])
+    {
+        $this->appid = $appid;
+        $this->page = $page;
+        $this->title = $title;
+        $this->description = $description;
+        $this->emphasis_first_item = $emphasis_first_item; //是否放大第一个content_item(default true)
+        $this->content_item = $content_item;
+    }
+
+    public function CheckMessageSendArgs()
+    {
+        $len_title = strlen($this->title);
+        $len_desc = strlen($this->description);
+        if (($len_title<4 || $len_title>24) || ($len_desc<4 ||$len_desc>24)) {
+            throw new QyApiError("Mina Title or Desc len is not allowed!");
+        }
+        if(count($this->content_item)>10){
+            throw new QyApiError("Mina content_item is big than 10");
+        }
+        foreach ($this->content_item as $k => $v){
+            if (strlen($k)>10 || strlen($v)>30){
+                throw new QyApiError("Mina key or value more than 10 or 30". $k);
+            }
+        }
+    }
+
+    public function MessageContent2Array(&$arr)
+    {
+        Utils::setIfNotNull($this->msgtype, "msgtype", $arr);
+        $contentArr = array();
+        {
+            Utils::setIfNotNull($this->appid, "appid", $contentArr);
+            Utils::setIfNotNull($this->page,"page",$contentArr);
+            Utils::setIfNotNull($this->title, "title", $contentArr);
+            Utils::setIfNotNull($this->description, "description", $contentArr);
+            Utils::setIfNotNull($this->emphasis_first_item, "emphasis_first_item", $contentArr);
+            Utils::setIfNotNull($this->content_item, "content_item", $contentArr);
+        }
+        Utils::setIfNotNull($contentArr, $this->msgtype, $arr);
+    }
+}
+
+/*
+ * 任务卡片消息类型，其中的消息类型示例：
+ *    "interactive_taskcard" : {
+        "title" : "赵明登的礼物申请",
+        "description" : "礼品：A31茶具套装\n用途：赠与小黑科技张总经理",
+        "url" : "URL",
+        "task_id" : "taskid123",
+        "btn":[
+            {
+                "key": "key111",
+                "name": "批准",
+                "color":"red",
+                "is_bold": true
+            },
+            {
+                "key": "key222",
+                "name": "驳回"
+            }
+        ]
+   },
+  其中：
+btn:key	是	按钮key值，用户点击后，会产生任务卡片回调事件，回调事件会带上该key值，只能由数字、字母和“_-@”组成，最长支持128字节
+btn:name	是	按钮名称，最长支持18个字节，超过则截断
+btn:color	否	按钮字体颜色，可选“red”或者“blue”,默认为“blue”
+btn:is_bold	否	按钮字体是否加粗，默认false
+enable_id_trans	否	表示是否开启id转译，0表示否，1表示是，默认0
+ */
+class TaskCardMessageContent
+{
+    public $msgtype = "interactive_taskcard";
+
+    public function __construct($title=null, $description=null,$url=null,
+                                $task_id=null, array $btn=[])
+    {
+        $this->title = $title; //	标题，不超过128个字节，超过会自动截断（支持id转译）
+        $this->description = $description; //描述，不超过512个字节，超过会自动截断（支持id转译）
+        $this->url = $url; //点击后跳转的链接。最长2048字节，请确保包含了协议头(http/https)
+        $this->task_id = $task_id; //任务id，同一个应用发送的任务卡片消息的任务id不能重复，只能由数字、字母和“_-@”组成，最长支持128字节
+        $this->btn = $btn; //按钮列表，按钮个数为1~2个。
+    }
+
+    public function CheckMessageSendArgs()
+    {
+        $len_title = strlen($this->title);
+        $len_desc = strlen($this->description);
+        if ( $len_title>128 || $len_desc>512 || strlen($this->url)>2048) {
+            throw new QyApiError("TaskCard Title or Desc or url len is not allowed!");
+        }
+        if(count($this->btn)>2){
+            throw new QyApiError("TaskCard content_item is big than 2");
+        }
+        foreach ($this->btn as $k => $v){
+            if (strlen($k)>128 || strlen($v)>30){
+                throw new QyApiError("TaskCard key or value more than 10 or 30". $k);
+            }
+        }
+    }
+
+    public function MessageContent2Array(&$arr)
+    {
+        Utils::setIfNotNull($this->msgtype, "msgtype", $arr);
+        $contentArr = array();
+        {
+            Utils::setIfNotNull($this->title, "title", $contentArr);
+            Utils::setIfNotNull($this->description, "description", $contentArr);
+            Utils::setIfNotNull($this->url, "url", $contentArr);
+            Utils::setIfNotNull($this->task_id,"task_id",$contentArr);
+            Utils::setIfNotNull($this->btn, "btn", $contentArr);
+        }
+        Utils::setIfNotNull($contentArr, $this->msgtype, $arr);
+    }
+}
diff --git a/api/examples/config_link.php b/api/examples/config_link.php
new file mode 100644
index 0000000..6ce1408
--- /dev/null
+++ b/api/examples/config_link.php
@@ -0,0 +1,5 @@
+<?php
+return [
+    'corpid' => 'wx17a22c6916657c82e',
+    'sec' => '1Gjahd***3UY4Y4', // AGENT_SECRET
+];
diff --git a/api/examples/testLink.php b/api/examples/testLink.php
new file mode 100644
index 0000000..3a67c09
--- /dev/null
+++ b/api/examples/testLink.php
@@ -0,0 +1,75 @@
+<?php
+
+/**
+ * 注意使用时， linked_id  是关联企业的id，不是 关联企业的corpid.
+ * 在获取部门相关信息时，用 linked_id 。如 linked_id/departmentid
+ * 在用户信息的userid 时，用 关联企业的corpid。如 corpid/userid
+ * 以上两个id容易混乱，请区分。查看方式：
+ * 在企业微信管理后台，通讯录、互联企业，点其中一个互联企业，
+ */
+
+include_once (__DIR__."/../src/LinkAPI.class.php");
+$config = require (__DIR__."/config_link.php");
+//注意这里的配置文件，请改成自己的配置信息
+//use LinkAPI;
+//$config = require('./config.php');
+$api = new LinkAPI($config['corpid'], $config['sec']);
+
+try {
+
+    echo "获取应用的可见范围:";
+    $LinkGetPermList = $api->LinkGetPermList();
+    var_dump($LinkGetPermList);
+
+    echo '\n获取用户成员详细信息：';
+    $use_get = $api->Link_UserGet('ww5614ccf1c02e6d99/7086');
+    var_dump($use_get);
+
+    echo '\n获取互联企业部门成员:（需要在“可见范围加该部门可见，否则会提示
+    //Warning: wrong json format. user not in app perm!
+    ';
+    $simplelist = $api->Link_UserSimpleList('wh205582b532e12e3f/307');
+    var_dump($simplelist);
+
+    echo '\n获取互联企业部门成员详情:';
+    $userList = $api->Link_UserList('wh205582b532e12e3f/307');
+    var_dump($userList);
+
+    echo '\n获取互联企业部门列表:';
+    $dep_list = $api->Link_DepartmentList('wh205582b532e12e3f/307');
+    var_dump($dep_list);
+
+    echo '\n发送图文消息示例：';
+    $message = new Link_Message();
+    {
+        //$message->sendToAll = false;
+        $message->touser = array('ww5614ccf1c02e6d99/7086', );
+//                $message->toparty = array(1, 2, 1111, 3333);
+//                $message->totag= array(3, 4, 22233332, 33334444);
+        $message->agentid = $wxconfig['agentid'];
+        $message->safe = 0;
+
+        $message->messageContent = new NewsMessageContent(
+            array(
+                new NewsArticle(
+                    $title = "testing Got you !",
+                    $description = "from auto.pw error! qywxMsg Warnning!",
+                    $url = "https://work.weixin.qq.com/",
+                    $picurl = "https://p.qpic.cn/pic_wework/167386225/f9ffc8f0a34f301580daaf05f225723ff571679f07e69f91/0",
+                    $btntxt = "btntxt"
+                ),
+            )
+        );
+    }
+
+    $invalidUserIdList = null;
+    $invalidPartyIdList = null;
+    $invalidTagIdList = null;
+
+    $api->Link_MessageSend($message, $invalidUserIdList, $invalidPartyIdList, $invalidTagIdList);
+
+
+
+} catch (Exception $e) {
+    echo $e->getMessage() . "\n";
+}
diff --git a/api/examples/testMessage.php b/api/examples/testMessage.php
new file mode 100644
index 0000000..3c1e7b9
--- /dev/null
+++ b/api/examples/testMessage.php
@@ -0,0 +1,291 @@
+<?php
+
+
+/**
+ * 向企业微信调用对应的接口方法参考。
+ * 原理：调用 php_qywx 中的相关API，将 corpid/agentid 参数传递过去（注意不同的企业微信使用不同的corpid和agentid），将返回结果返回，并自动判断错误。
+ * 如有调用企业微信API的问题，请联系
+ * author: ywq
+ * date: 2021/07/13
+ */
+
+namespace App\Common;
+include_once "../src/CorpAPI.class.php"; //互联企业用LinkAPI.class.php
+include_once "../datastructure/MessageExt.class.php";
+
+use CorpAPI;
+use Exception;
+use MDMessageContent;
+use Message;
+use MinaMessageContent;
+use NewsArticle;
+use NewsMessageContent;
+use ParameterError;
+use TaskCardMessageContent;
+
+class Qywx
+{
+    private $config;
+    private $workApi;
+
+    /**
+     * 初始化企业微信的参数，传入不同的 corpid，可使用对应不同的企业微信接口
+     * Qywx constructor.
+     * @param string $corpId
+     */
+    public function __construct()
+    {
+        $config = require('../../config.php');
+        if (empty($this->config))
+            return 'corpId is empty';
+        try {
+            $this->workApi = new CorpAPI($config['corpId'], $config['secretKey']);
+        } catch (ParameterError $e) {
+            echo ('初始化 WorkApi 失败，App/Common/Qywx.php: '. $e->getMessage());
+            return 'Initial WorkApi failed!';
+        }
+        return $this;
+    }
+
+    /**
+     * 发送消息示例
+     * @desc 消息推送的一个例子，发送图文消息
+     * @param array $toUser
+     * @param array $toParty
+     * @param array $toTag
+     * @param string $title
+     * @param string $desc
+     * @param string $url
+     * @param string $picurl
+     * @return array
+     */
+    public function SendMessage(array $toUser = [], array $toParty = [], array $toTag = [], $title = '', $desc = '', $url = '', $picurl = '')
+    {
+
+        try {
+            //以下为发送一个图文消息例子，其他接口具体请参考 php_qywx 中的例子
+            $message = new Message();
+            {
+                $message->sendToAll = false;
+//                $message->touser = $toUser?$toUser:array("XingGuang");
+                if (!empty($toUser)) $message->touser = $toUser;
+                if (!empty($toParty)) $message->toparty = $toParty; // 发给指定部门
+                if (!empty($toTag)) $message->totag = $toTag;
+//                $message->totag= array(3, 4, 22233332, 33334444); // 发给指定标签
+                $message->agentid = $this->config['agentId'];
+                $message->safe = 0;
+
+                $message->messageContent = new NewsMessageContent(
+                    array(
+                        new NewsArticle(
+                            $title,
+                            $desc,
+                            $url,
+                            $picurl,
+                            $btntxt = "btntxt"
+                        ),
+                    )
+                );
+            }
+            $invalidUserIdList = null;
+            $invalidPartyIdList = null;
+            $invalidTagIdList = null;
+
+            $this->workApi->MessageSend($message, $invalidUserIdList, $invalidPartyIdList, $invalidTagIdList);
+            return ['failedList' => ['invalidUserIdList' => $invalidUserIdList, 'invalidPartyIdList' => $invalidPartyIdList, 'invalidTagIdList' => $invalidTagIdList]];
+        } catch (Exception $e) {
+            print ('QYWX_Api MessageSend send failed: '. $e->getMessage());
+            return ['error_msg' => 'QYWX_Api MessageSend send failed. ', 'error' => $e->getMessage()];
+        }
+    }
+
+    /*
+     * 发送小程序消息通知
+     * @desc 发送小程序消息通知测试
+     * @param array $toUser
+     * @param array $toParty
+     * @param array $toTag
+     * @param string $title
+     * @param string $desc
+     * @return array
+     */
+    public function SendMinaMessage(array $toUser, array $toParty, array $toTag, $appid, $page, $title, $desc, $emp, array $content_item)
+    {
+        try {
+            $message = new Message();
+            {
+                $message->sendToAll = false;
+//                $message->touser = $toUser?$toUser:array("XingGuang");
+                if (!empty($toUser)) $message->touser = $toUser;
+                if (!empty($toParty)) $message->toparty = $toParty; // 发给指定部门
+                if (!empty($toTag)) $message->totag = $toTag;
+//                $message->totag= array(3, 4, 22233332, 33334444); // 发给指定标签
+                $message->agentid = $this->config['agentId'];
+                $message->safe = 0;
+            }
+            $message->messageContent = new MinaMessageContent(
+                $appid,
+                $page,
+                $title,
+                $desc,
+                $emp,
+                $content_item
+            );
+            $invalidUserIdList = null;
+            $invalidPartyIdList = null;
+            $invalidTagIdList = null;
+
+            $this->workApi->MessageSend($message, $invalidUserIdList, $invalidPartyIdList, $invalidTagIdList);
+            return ['failedList' => ['invalidUserIdList' => $invalidUserIdList, 'invalidPartyIdList' => $invalidPartyIdList, 'invalidTagIdList' => $invalidTagIdList]];
+        } catch (Exception $e) {
+            print('QYWX_Api Mina MessageSend send failed: '. $e->getMessage());
+            return ['error_msg' => 'QYWX_Api Mina MessageSend send failed. ', 'error' => $e->getMessage()];
+        }
+    }
+
+
+    /*
+ * 发送 MarkDown 消息通知
+ * @desc 发送MD消息通知测试
+ * @param array $toUser
+ * @param array $toParty
+ * @param string $content_item
+ * @return array
+ */
+    public function SendMDMessage(array $toUser, array $toParty, array $toTag, $content_item)
+    {
+        try {
+            $message = new Message();
+            {
+                $message->sendToAll = false;
+//                $message->touser = $toUser?$toUser:array("XingGuang");
+                if (!empty($toUser)) $message->touser = $toUser;
+                if (!empty($toParty)) $message->toparty = $toParty; // 发给指定部门
+                if (!empty($toTag)) $message->totag = $toTag;
+//                $message->totag= array(3, 4, 22233332, 33334444); // 发给指定标签
+                $message->agentid = $this->config['agentId'];
+                $message->safe = 0;
+            }
+            $message->messageContent = new MDMessageContent(
+                $content_item
+            );
+            $invalidUserIdList = null;
+            $invalidPartyIdList = null;
+            $invalidTagIdList = null;
+
+            $this->workApi->MessageSend($message, $invalidUserIdList, $invalidPartyIdList, $invalidTagIdList);
+            return ['failedList' => ['invalidUserIdList' => $invalidUserIdList, 'invalidPartyIdList' => $invalidPartyIdList, 'invalidTagIdList' => $invalidTagIdList]];
+        } catch (Exception $e) {
+            print('QYWX_Api MD MessageSend send failed: '. $e->getMessage());
+            return ['error_msg' => 'QYWX_Api MD MessageSend send failed. ', 'error' => $e->getMessage()];
+        }
+    }
+
+
+    /*
+* 发送 任务卡片 消息通知
+* @desc 发送 任务卡片消息 通知测试
+* @param array $toUser
+* @param array $toParty
+* @param array $toTag
+* @param array $interactive_taskcard
+* @return array
+*/
+    public function SendTaskCardMessage(array $toUser, array $toParty, array $toTag,
+                                        array $interactive_taskcard)
+    {
+        try {
+            $message = new Message();
+            {
+                $message->sendToAll = false;
+//                $message->touser = $toUser?$toUser:array("XingGuang");
+                if (!empty($toUser)) $message->touser = $toUser;
+                if (!empty($toParty)) $message->toparty = $toParty; // 发给指定部门
+                if (!empty($toTag)) $message->totag = $toTag;
+//                $message->totag= array(3, 4, 22233332, 33334444); // 发给指定标签
+                $message->agentid = $this->config['agentId'];
+//                $message->safe = 0;
+            }
+            $message->messageContent = new TaskCardMessageContent(
+                $interactive_taskcard['title'],
+                $interactive_taskcard['description'],
+                $interactive_taskcard['url'],
+                $interactive_taskcard['task_id'],
+                $interactive_taskcard['btn']
+            );
+            $invalidUserIdList = null;
+            $invalidPartyIdList = null;
+            $invalidTagIdList = null;
+
+            $this->workApi->MessageSend($message, $invalidUserIdList, $invalidPartyIdList, $invalidTagIdList);
+            return ['failedList' => ['invalidUserIdList' => $invalidUserIdList, 'invalidPartyIdList' => $invalidPartyIdList, 'invalidTagIdList' => $invalidTagIdList]];
+        } catch (Exception $e) {
+            print ('QYWX_Api TaskCard MessageSend send failed: '. $e->getMessage());
+            return ['error_msg' => 'QYWX_Api TaskCard MessageSend send failed. ', 'error' => $e->getMessage()];
+        }
+    }
+}
+
+
+
+$qywx = new Qywx();
+
+/*
+ * 以下为发送图文消息示例
+*/
+//        $aa = $qywx->SendMessage(["XingGuang"], [], [], '发送消息主题', '消息描述',
+//            'https://scrm15.bydauto.com.cn/',
+//            'http://wx.qlogo.cn/mmhead/Q3auHgzwzM44XoVIlx6YvtVicjt5IOgbL6cBiajBPic6tWA63kxTyfq2Q/0');
+
+/*
+ 以下为发送小程序消息示例
+*/
+//        $aa = $qywx->SendMinaMessage(["XingGuang"], [], [],
+//            $appid, "/page/index", "发送小程序消息", "小程序消息描述",
+//            true, [["key"=>"会议室", "value"=>"402"],
+//                ["key"=>"会议地点", "value"=>"B区156"], [
+//                "key"=>"会议时间", "value"=>"2021/09/22 09:30-10:00"]]);
+
+/*
+以下为发送md格式消息示例
+*/
+//        $mdMessage = <<<EOT
+//            您的会议室已经预定，稍后会同步到`邮箱`
+//                >**事项详情**
+//                >事　项：<font color=\"info\">开会</font>
+//                >组织者：@miglioguan
+//                >参与者：@miglioguan、@kunliu、@jamdeezhou、@kanexiong、@kisonwang
+//                >
+//                >会议室：<font color=\"info\">广州TIT 1楼 301</font>
+//                >日　期：<font color=\"warning\">2018年5月18日</font>
+//                >时　间：<font color=\"comment\">上午9:00-11:00</font>
+//                >
+//                >请准时参加会议。
+//                >
+//                >如需修改会议信息，请点击：[修改会议信息](https://work.weixin.qq.com)
+//        EOT;
+//        $aa = $qywx->SendMDMessage(["XingGuang"], [], [], $mdMessage);
+
+/* 以下为发送任务卡片消息.。注意：此方法需要先设置应用的回调url，才能调用成功。如，点了“批准”或“驳回”后，会到
+   回调url中，在后续的操作中进行处理。否则会提示：{\"errcode\":43012,\"errmsg\":\"require agent with callback url,
+*/
+$tc = [
+    "title" => "赵明登的礼物申请",
+    "description" =>  "礼品：A31茶具套装\n用途：赠与小黑科技张总经理",
+    "url"  => "URL",
+    "task_id"  =>  "taskid123",
+    "btn" => [[
+        "key" => "key111",
+        "name" =>  "批准",
+        "color" => "red",
+        "is_bold" =>  true
+    ],
+        [
+            "key" =>  "key222",
+            "name" =>  "驳回"
+        ]]
+];
+$aa = $qywx->SendTaskCardMessage(["XingGuang"], [], [], $tc);
+
+// 返回结果
+return $aa;
diff --git a/api/src/LinkAPI.class.php b/api/src/LinkAPI.class.php
new file mode 100644
index 0000000..fc2f056
--- /dev/null
+++ b/api/src/LinkAPI.class.php
@@ -0,0 +1,257 @@
+<?php
+
+include_once(__DIR__."/../datastructure/Link_Message.class.php");
+include_once ("CorpAPI.class.php");
+//use User;
+//use Utils;
+
+class LinkAPI extends CorpAPI {
+
+    //linkCorp 关联企业相关接口添加，by ywq
+    const Link_Get_Perm_List     = '/cgi-bin/linkedcorp/agent/get_perm_list?access_token=ACCESS_TOKEN';//获取应用的可见范围
+    const Link_USER_GET          = '/cgi-bin/linkedcorp/user/get?access_token=ACCESS_TOKEN'; //获取互联企业成员详细信息
+    const Link_USER_SIMPLE_LIST  = '/cgi-bin/linkedcorp/user/simplelist?access_token=ACCESS_TOKEN'; //获取互联企业部门成员
+    const Link_USER_LIST         = '/cgi-bin/linkedcorp/user/list?access_token=ACCESS_TOKEN'; //获取互联企业部门成员详情
+    const Link_DEPARTMENT_LIST   = '/cgi-bin/linkedcorp/department/list?access_token=ACCESS_TOKEN'; //获取互联企业部门列表
+    const Link_MESSAGE_SEND      = '/cgi-bin/linkedcorp/message/send?access_token=ACCESS_TOKEN'; //互联企业的应用支持推送文本、图片、视频、文件、图文等类型。
+
+    //以下为企业互联相关
+    const Corp_List_App_ShareInfo= '/cgi-bin/corpgroup/corp/list_app_share_info?access_token=ACCESS_TOKEN';// 获取应用共享信息
+    const Corp_Get_Token         = '/cgi-bin/corpgroup/corp/gettoken?access_token=ACCESS_TOKEN'; //获取下级企业的access_token
+    const Corp_Mina_Session      = '/cgi-bin/miniprogram/transfer_session?access_token=ACCESS_TOKEN';//获取下级企业的小程序session
+
+
+    //=============================关联企业API接口 =====================================
+    /**
+     * @brief Link_Get_Perm_List :获取应用的可见范围
+     * @desc 仅自建应用可调用。本接口只返回互联企业中非本企业内的成员和部门的信息，如果要获取本企业的可见范围，请调用“获取应用”接口
+     * @link https://work.weixin.qq.com/api/doc/90000/90135/93172
+     * @return array userids 示例："userids": ["CORPID/USERID"],
+     * @return array department_ids 示例： "department_ids":["LINKEDID/DEPARTMENTID"]
+     * @throws QyApiError
+     */
+    public function LinkGetPermList(){
+        self::_HttpCall(self::Link_Get_Perm_List, 'POST', '');
+        $ret = is_array($this->rspJson) ? $this->rspJson: json_decode($this->rspJson,true);
+        return [$ret['userids'], $ret['department_ids']];
+    }
+
+    /**
+     * @brief Link_USER_GET : 关联企业读取成员详细信息
+     * @link https://work.weixin.qq.com/api/doc/90000/90135/93171
+     * @param $userid : string
+     * @return User : User
+     * @throws ParameterError
+     * @throws QyApiError
+     */
+    public function Link_UserGet($userid)
+    {
+        Utils::checkNotEmptyStr($userid, "userid");
+        self::_HttpCall(self::Link_USER_GET, 'POST', array('userid' => $userid));
+        return User::Array2User($this->rspJson['user_info']);
+    }
+
+
+    /**
+     * @brief UserSimpleList : 获取关联企业部门成员
+     * @link https://work.weixin.qq.com/api/doc/90000/90135/93168
+     * @param $department_id
+     * @param bool $fetchChild : true/false 是否递归获取子部门下面的成。（官方文档中不严谨，这里如果用0、1会提示json格式不正确。查了很久原因）
+     *
+     * @return array : User array
+     * @throws ParameterError
+     * @throws QyApiError
+     */
+    public function Link_UserSimpleList($department_id, $fetchChild=false)
+    {
+        Utils::checkNotEmptyStr($department_id, "department_id");
+        self::_HttpCall(self::Link_USER_SIMPLE_LIST, 
+            'POST', 
+            json_encode( array('department_id'=>$department_id, 'fetch_child'=>$fetchChild), JSON_UNESCAPED_UNICODE));
+//        self::_HttpCall(self::Link_USER_SIMPLE_LIST, 'POST',
+//            '{"department_id": "wh205582b532e12e3f/307"');
+        return $this->Array2UserList($this->rspJson);
+    }
+
+    /**
+     * @brief UserList : 获取关联企业部门成员详情
+     * @link https://work.weixin.qq.com/api/doc/90000/90135/93169
+     * @param $departmentId : string
+     * @param bool $fetchChild : true/false  是否递归获取子部门下面的成员
+     *
+     * @return array
+     * @throws ParameterError
+     * @throws QyApiError
+     */
+    public function Link_UserList($departmentId, $fetchChild=false)
+    {
+        Utils::checkNotEmptyStr($departmentId, "departmentId");
+        self::_HttpCall(self::Link_USER_LIST, 'POST', array('department_id'=>$departmentId, 'fetch_child'=>$fetchChild));
+        return User::Array2UserList($this->rspJson);
+    }
+
+    /**
+     * @brief DepartmentList : 获取互联企业部门列表
+     * @link https://work.weixin.qq.com/api/doc/90000/90135/93170
+     *
+     * @param $departmentId : string, 该字段用的是互联应用可见范围接口返回的department_ids参数，用的是 linkedid + ’/‘ + department_id 拼成的字符串
+     *
+     * @return array : Department array
+     * @throws QyApiError
+     */
+    public function Link_DepartmentList($departmentId)
+    {
+        self::_HttpCall(self::Link_DEPARTMENT_LIST, 'POST', array('department_id'=>$departmentId));
+        return $this->Link_Array2DepartmentList($this->rspJson);
+    }
+
+    // --------------------------- 关联企业消息推送 -----------------------------------
+
+    /**
+     * @brief Link_MessageSend : 发送消息
+     *
+     * @link https://work.weixin.qq.com/api/doc#10167
+     *
+     * @param Link_Message $message : Message
+     * @param $invalidUserIdList : string array
+     * @param $invalidPartyIdList : uint array
+     * @param $invalidTagIdList : uint array
+     *
+     * @return void
+     * @throws QyApiError
+     */
+    public function Link_MessageSend(Link_Message $message, &$invalidUserIdList, &$invalidPartyIdList, &$invalidTagIdList)
+    {
+        $message->CheckMessageSendArgs();
+        $args = $message->Message2Array();
+        $args = json_encode($args);
+//        $args['agentid'] = $message->agentid;
+        self::_HttpCall(self::Link_MESSAGE_SEND, 'POST', $args);
+
+        $invalidUserIdList = utils::arrayGet($this->rspJson, "invaliduser");
+        $invalidPartyIdList = utils::arrayGet($this->rspJson, "invalidparty");
+        $invalidTagIdList = utils::arrayGet($this->rspJson, "invalidtag");
+    }
+
+
+    // =========  关联企业的其他关联方法，与本企业的方法有不同之处 =======
+    private function Array2UserList($arr)
+    {
+        $userList = $arr["userlist"];
+
+        $retUserList = array();
+        if (is_array($userList)) {
+            foreach ($userList as $item) {
+                $user = $this->Link_Array2User($item);
+                $retUserList[] = $user;
+            }
+        }
+        return $retUserList;
+    }
+
+    private function Link_Array2User($arr)
+    {
+        $user['userid'] = Utils::arrayGet($arr, "userid");
+        $user['name'] = Utils::arrayGet($arr, "name");
+        $user['department'] = Utils::arrayGet($arr, "department");
+        $user['corpid'] = Utils::arrayGet($arr, "corpid");
+        return $user;
+    }
+
+    private function Link_Array2DepartmentList($arr)
+    {
+        $list = $arr["department_list"];
+
+        $departmentList = array();
+        if (is_array($list)) {
+            foreach ($list as $item) {
+                $department = $this->Link_Array2Department($item);
+                $departmentList[] = $department;
+            }
+        }
+        return $departmentList;
+    }
+    private function Link_Array2Department($arr)
+    {
+        $department = [];
+        $department['department_name'] = Utils::arrayGet($arr, "department_name");
+        $department['->department_id'] = Utils::arrayGet($arr, "department_id");
+        $department['parentid'] = Utils::arrayGet($arr, "parentid");
+        $department['order'] = Utils::arrayGet($arr, "order");
+        return $department;
+    }
+
+    // =================== 以下为 企业互联 相关API接口 =================================
+    /**
+     * @desc 获取应用共享信息
+     * 上级企业通过该接口获取某个应用分享给的所有企业列表。
+     * 特别注意，对于有敏感权限的应用，需要下级企业确认后才能共享成功，若下级企业未确认，则不会存在于该接口的返回列表
+     * @link https://work.weixin.qq.com/api/doc/90000/90135/93403
+     * @param integer $agentid  上级企业应用agentid
+     * @return array $share_info
+     * share_info	应用共享信息
+    share_info.corpid	下级企业corpid
+    share_info.corp_name	下级企业名称
+    share_info.agentid	下级企业应用id
+     * 示例
+     {"errcode": 0,
+    "errmsg": "ok",
+    "share_info":[{
+        "corpid": "wwcorpid1",
+        "corp_name": "测试企业1"
+        "agentid": 1111
+    }]}
+     * @throws QyApiError  如果没有做企业互联
+     */
+    public function Corp_ListAppShareInfo($agentid)
+    {
+        self::_HttpCall(self::Corp_List_App_ShareInfo, 'POST', array('agentid'=>$agentid));
+        return $this->rspJson['share_info'];
+    }
+
+    /**
+     * @desc 获取下级企业的access_token。注意，此token需要另外缓存，避免多次调用，且“一定”不要与当前应用混淆
+     * 获取应用可见范围内下级企业的access_token，该access_token可用于调用下级企业通讯录的只读接口。
+     * @link https://work.weixin.qq.com/api/doc/90000/90135/93359
+     * @param string $corpid 	已授权的下级企业corpid  注意是 "下级企业的corpid"
+     * @param integer $agentid  已授权的 "下级" 企业 "应用ID"，不是当前企业的
+     * @return array $share_info
+     * @return string $access_token 获取到的下级企业调用凭证，最长为512字节
+     * @return string $expires_in	凭证的有效时间（秒）
+    {   "errcode": 0,
+    "errmsg": "ok",
+    "access_token": "accesstoken000001",
+    "expires_in": 7200
+    }
+     * @throws QyApiError
+     */
+    public function Corp_GroupAccessToken($corpid, $agentid)
+    {
+        self::_HttpCall(self::Corp_Get_Token, 'POST', array("corpid"=>$corpid, 'agentid'=>$agentid));
+        return [$this->rspJson['access_token'], $this->rspJson['expires_in']];
+    }
+
+    /**
+     * @desc 获获取下级企业的小程序session
+     * 上级企业通过该接口转换为下级企业的小程序session
+     * @link https://work.weixin.qq.com/api/doc/90000/90135/93355
+     * @param string $userid 通过code2Session接口获取到的加密的userid，不多于64字节
+     * @param string $session_key 通过code2Session接口获取到的属于上级企业的会话密钥-不多于64字节
+     * @return array
+     * @return string $userid, 下级企业用户的ID。此时是解密后的明文ID
+     * @return string $session_key 属于下级企业的会话密钥
+    {
+    "errcode": 0,
+    "errmsg": "ok"
+    "userid": "jack",
+    "session_key": "DGAuy2KVaGcnsUrXk8ERgw==",
+    }
+     * @throws QyApiError
+     */
+    public function Corp_MinaSession($userid, $session_key)
+    {
+        self::_HttpCall(self::Corp_Mina_Session, 'POST', array("userid"=>$userid, 'session_key'=>$session_key));
+        return [$this->rspJson['userid'], $this->rspJson['session_key']];
+    }
+
+}
\ No newline at end of file
diff --git a/api/src/LinkAPI.md b/api/src/LinkAPI.md
new file mode 100644
index 0000000..ed201f3
--- /dev/null
+++ b/api/src/LinkAPI.md
@@ -0,0 +1,29 @@
+# 关联企业API调用说明
+（不是企业互联：https://work.weixin.qq.com/api/doc/90000/90135/93360）
+
+互联企业的功能调用：参考https://work.weixin.qq.com/api/doc/90000/90135/93167
+
+主要功能有：
+1. 获取应用可见范围
+1. 获取互联企业成员详细信息
+1. 获取互联企业部门成员
+1. 获取互联企业部门成员详情
+1. 获取互联企业列表
+1. 发送应用消息
+1. 接收消息与事件（回调模式，需要应用支持）
+
+##有关代码：
+直接在文档中加载 LinkAPI.class.php 即可
+include_once (__DIR__."/../src/LinkAPI.class.php");
+
+##调用说明：
+使用方法参考：examples\testLink.php
+    //linkCorp 关联企业相关接口添加，增加功能清单如下：
+    const Link_Get_Perm_List     = '/cgi-bin/linkedcorp/agent/get_perm_list?access_token=ACCESS_TOKEN';//获取应用的可见范围
+    const Link_USER_GET          = '/cgi-bin/linkedcorp/user/get?access_token=ACCESS_TOKEN'; //获取互联企业成员详细信息
+    const Link_USER_SIMPLE_LIST  = '/cgi-bin/linkedcorp/user/simplelist?access_token=ACCESS_TOKEN'; //获取互联企业部门成员
+    const Link_USER_LIST         = '/cgi-bin/linkedcorp/user/list?access_token=ACCESS_TOKEN'; //获取互联企业部门成员详情
+    const Link_DEPARTMENT_LIST   = '/cgi-bin/linkedcorp/department/list?access_token=ACCESS_TOKEN'; //获取互联企业部门列表
+    const Link_MESSAGE_SEND      = '/cgi-bin/linkedcorp/message/send?access_token=ACCESS_TOKEN'; //互联企业的应用支持推送文本、图片、视频、文件、图文等类型。
+
+后续将加入企业互联的相关功能。
diff --git a/callback_json/README.md b/callback_json/README.md
index e31bad0..beccd5d 100644
--- a/callback_json/README.md
+++ b/callback_json/README.md
@@ -7,5 +7,3 @@
   使用方法可以参考Sample.php文件。
 - 加解密协议请参考企业微信官方文档。
 - 经测试，PHP 5.3.3 ~ 7.2.0 版本均可使用
-
-- 推荐一个好用的免费内网穿透工具： https://xd.zhexi.tech/remote/mapping
diff --git a/config.php b/config.php
index 211cb98..a65e0bc 100644
--- a/config.php
+++ b/config.php
@@ -10,5 +10,15 @@
  */
  
 return array(
-    'DEBUG' => true, // 是否打印debug信息
+    'DEBUG' => true, // 是否打印debug信息。注意，此为true时，会在返回结果中带curl 请求详情，而不仅仅是 json。正式使用时需要改成 false。
+    'corp' => [
+        'corpId' => 'ww913f78bb23341760',
+        'agentId' => '',
+        'secretKey' => '', // agent所对应的 secret
+    ],
+    'redis' => [
+        'host'=>'',
+        'auth'=>'',
+        'db'=>0,
+    ]
 );