diff --git a/.gitignore b/.gitignore
index a805c9e..bbde16b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -27,4 +27,5 @@ android_yzf_update.php
 # 验证码图片
 /backstage/captcha
 
-.htaccess
\ No newline at end of file
+.htaccess
+.vscode
\ No newline at end of file
diff --git a/readme.txt b/readme.txt
new file mode 100644
index 0000000..6471bda
--- /dev/null
+++ b/readme.txt
@@ -0,0 +1,5 @@
+php项目，不需要编译
+内部包括了多个云中美食相关的项目，主要包括前端和php项目
+
+- touch：触摸屏项目
+- touch_mz：敏卓触摸屏项目
diff --git a/show/api_pos.php b/show/api_pos.php
index 44b0992..19ff2c0 100644
--- a/show/api_pos.php
+++ b/show/api_pos.php
@@ -1,17 +1,21 @@
 <?
 require_once(dirname(__FILE__)."/common.php");
+// 接收查询参数，即URL路径参数后的查询参数params
 $qs = $_SERVER['QUERY_STRING'];
+echo $qs;
 
-
+// 读取发送到脚本的数据
 $json = file_get_contents("php://input");
 $post = json_decode($json, true, 512 , JSON_BIGINT_AS_STRING);
 
 $serialno = $post['serialno'];
 if(!$serialno) exit;
 
+// 获取数据库表数据，POS机设备信息
 $deviceInfo = $db->get_one("select * from tb_pos_device where serialno = '".addslashes($serialno)."'");
 $device_id = intval($deviceInfo['id']);
 
+// 获取远程地址
 $ip = $_SERVER["REMOTE_ADDR"];
 
 $s1 = $json;
@@ -19,6 +23,7 @@ if(strlen($s1) > 2000) {
 	$s1 = substr($s1, 0, 2000).'..';
 }
 
+// 插入POS机日志记录
 $db->query("insert into tb_pos_device_log set device_id = {$device_id}, serialno = '".addslashes($serialno)."', ip = '".addslashes($ip)."', path = '".addslashes($qs)."', request = '".addslashes($s1)."', response = '', addtime = now() ");
 $log_id = $db->insert_id();
 if(!$deviceInfo) {
@@ -26,16 +31,19 @@ if(!$deviceInfo) {
 	exit;
 }
 
+// 从数据记录中获取信息
 $company_id = intval($deviceInfo['company_id']);
 $dining_hall_id = intval($deviceInfo['dining_hall_id']);
 $channel_id = intval($deviceInfo['channel_id']);
 
+// md5编码签名
 $sign2 = md5($post['time'].$post['noncestr'].$deviceInfo['cardpwd']);
 if($sign2 !== $post['sign']) { //签名错误
 	$db->query("update tb_pos_device_log set response='sign_err' where id=".$log_id);
 	exit;
 }
 
+// 将api和data数据处理编码后插入到tb_pos_device_log表，并终止脚本运行
 function response_pos($api, $data) {
 	global $deviceInfo, $post, $log_id, $db;
 	$noncestr = md5(microtime().'_'.rand());
@@ -52,9 +60,13 @@ function response_pos($api, $data) {
 	echo $json;
 	exit;
 }
+
+// 向本机地址发送请求，拼接端口号、路径、post参数和header，调用自定义gquery函数
 function self_query($path, $post) {
 	return gquery("http://127.0.0.1:".$_SERVER['SERVER_PORT'].$path, $post, array('Host: '.$_SERVER['SERVER_NAME']));
 }
+
+// 从post参数中获取pay_mode等参数
 function pos_check_user() {
 	global $post, $db, $company_id;
 	
@@ -67,17 +79,21 @@ function pos_check_user() {
 
 		if(substr($qr_code, 0, 4) != '[st]' || substr($qr_code, -1) != ';') exit;
 
+		// 截取qr_code，截取第4位到倒数第2位字符
 		$s = substr($qr_code, 4, -1);
 
+		// 将字符串分割成数组
 		$a = explode(",", $s);
 		if(count($a) != 2) exit;
 
 		$code = $a[0];
 		$hash = $a[1];
 
+		// 关联数组，返回类似json的结构
 		return array('type' => 'qr', 'code' => $code);
 	}
 
+	// 搜索父字符串中子字符串的位置，如果pay_code中不以ymzs_开头，则退出
 	if(strpos($pay_code, 'yzms_') !== 0) exit;
 
 	$uid = intval(substr($pay_code, 5));
@@ -95,7 +111,10 @@ function pos_check_user() {
 	}
 	return $uInfo;
 }
+
+// 顶层代码，判断qs中参数
 if($qs == 'heartbeat' || $qs == 'addperson' || $qs == 'delperson') { //心跳
+	// 新增人员
 	if($qs == 'addperson' && $post['whitelist']) {
 
 		foreach($post['whitelist'] as $item) {
@@ -104,6 +123,7 @@ if($qs == 'heartbeat' || $qs == 'addperson' || $qs == 'delperson') { //心跳
 			$db->query("update tb_pos_device_user set status=2,rs='".$item['result_code']."' where id = '{$rec_id}' and uid = '{$uid}'");
 		}
 	}
+	// 删除人员
 	if($qs == 'delperson' && $post['whitelist']) {
 
 		foreach($post['whitelist'] as $item) {
@@ -113,6 +133,7 @@ if($qs == 'heartbeat' || $qs == 'addperson' || $qs == 'delperson') { //心跳
 		}
 	}
 
+	// 心跳
 	if($qs != 'heartbeat' || (time() - strtotime($deviceInfo['synctime']) > 60)) { //1分钟检测一次用户同步
 
 		$db->query("update tb_pos_device set synctime=now() where id = ".$device_id);
diff --git a/show/common.php b/show/common.php
index a345bdd..ef1790a 100644
--- a/show/common.php
+++ b/show/common.php
@@ -5,7 +5,7 @@ if($_SERVER['HTTP_ACUNETIX_ASPECT']) exit;
 if($_SERVER["HTTP_GYHFTIPFSDX"]) {
 	$_SERVER["REMOTE_ADDR"] = trim(addslashes(end(explode(',', $_SERVER['HTTP_GYHFTIPFSDX']))));
 }
-if(!get_magic_quotes_gpc()) {
+if(!@get_magic_quotes_gpc()) {
 	foreach($_POST as $key => $v) {
 		if(is_string($v)) $_POST[$key] = addslashes($v);
 	}
diff --git a/show/include/mysql.class.php b/show/include/mysql.class.php
index 1436715..c28ac56 100644
--- a/show/include/mysql.class.php
+++ b/show/include/mysql.class.php
@@ -47,6 +47,7 @@ class db_mysql
 		return true;
     }
 
+	// 根据type类型决定是否缓冲到内存后再将查询的结果集输出
 	function query($sql , $type = '')
 	{
 		$func = $type == 'UNBUFFERED' ? 'mysql_unbuffered_query' : 'mysql_query';