diff --git a/include/common.php b/include/common.php
index c1168e7..3c41e9d 100644
--- a/include/common.php
+++ b/include/common.php
@@ -1,4 +1,5 @@
 <?php
+header ("Content-type:text/html;charset=utf-8");
 include_once 'config.php';
 if(!$con =mysqli_connect($dbconfig['host'],$dbconfig['user'],$dbconfig['pwd'],$dbconfig['dbname'],$dbconfig['port'])) {
 	if(mysqli_connect_errno()==2002) {
@@ -10,7 +11,38 @@ if(!$con =mysqli_connect($dbconfig['host'],$dbconfig['user'],$dbconfig['pwd'],$d
 	} else {
 		echo '连接数据库失败，['.mysqli_connect_errno().']'.mysqli_connect_error();
 	}
-mysqli_query($con, "set names utf8");
 }
+
+// 判断UA
+function isMobile() {
+    // 如果有HTTP_X_WAP_PROFILE则一定是移动设备
+    if (isset($_SERVER['HTTP_X_WAP_PROFILE'])) {
+        return true;
+    }
+    // 如果via信息含有wap则一定是移动设备,部分服务商会屏蔽该信息
+    if (isset($_SERVER['HTTP_VIA'])) {
+        // 找不到为flase,否则为true
+        return stristr($_SERVER['HTTP_VIA'], "wap") ? true : false;
+    }
+    // 判断手机发送的客户端标志,兼容性有待提高。其中'MicroMessenger'是电脑微信
+    if (isset($_SERVER['HTTP_USER_AGENT'])) {
+        $clientkeywords = array('nokia', 'sony', 'ericsson', 'mot', 'samsung', 'htc', 'sgh', 'lg', 'sharp', 'sie-', 'philips', 'panasonic', 'alcatel', 'lenovo', 'iphone', 'ipod', 'blackberry', 'meizu', 'android', 'netfront', 'symbian', 'ucweb', 'windowsce', 'palm', 'operamini', 'operamobi', 'openwave', 'nexusone', 'cldc', 'midp', 'wap', 'mobile', 'MicroMessenger');
+        // 从HTTP_USER_AGENT中查找手机浏览器的关键字
+        if (preg_match("/(" . implode('|', $clientkeywords) . ")/i", strtolower($_SERVER['HTTP_USER_AGENT']))) {
+            return true;
+        }
+    }
+    // 协议法，因为有可能不准确，放到最后判断
+    if (isset($_SERVER['HTTP_ACCEPT'])) {
+        // 如果只支持wml并且不支持html那一定是移动设备
+        // 如果支持wml和html但是wml在html之前则是移动设备
+        if ((strpos($_SERVER['HTTP_ACCEPT'], 'vnd.wap.wml') !== false) && (strpos($_SERVER['HTTP_ACCEPT'], 'text/html') === false || (strpos($_SERVER['HTTP_ACCEPT'], 'vnd.wap.wml') < strpos($_SERVER['HTTP_ACCEPT'], 'text/html')))) {
+            return true;
+        }
+    }
+    return false;
+}
+if (ismobile() == true) {$ua = 'wap';}else {$ua = 'pc';}
+
 ?>