改进Request类增加agent和isMobile方法

library/think/Request.php

@@ -711,6 +711,36 @@ class Request
         return $ip[$type];
     }
 
+    /**
+     * 获取用户agent信息
+     * @access public
+     * @return string
+     */
+    public function agent()
+    {
+        return $this->server('HTTP_USER_AGENT');
+    }
+
+    /**
+     * 检测是否使用手机访问
+     * @access public
+     * @return bool
+     */
+    public function isMobile()
+    {
+        if (isset($_SERVER['HTTP_VIA']) && stristr($_SERVER['HTTP_VIA'], "wap")) {
+            return true;
+        } elseif (strpos(strtoupper($_SERVER['HTTP_ACCEPT']), "VND.WAP.WML")) {
+            return true;
+        } elseif (isset($_SERVER['HTTP_X_WAP_PROFILE']) || isset($_SERVER['HTTP_PROFILE'])) {
+            return true;
+        } elseif (preg_match('/(blackberry|configuration\/cldc|hp |hp-|htc |htc_|htc-|iemobile|kindle|midp|mmp|motorola|mobile|nokia|opera mini|opera |Googlebot-Mobile|YahooSeeker\/M1A1-R2D2|android|iphone|ipod|mobi|palm|palmos|pocket|portalmmm|ppc;|smartphone|sonyericsson|sqh|spv|symbian|treo|up.browser|up.link|vodafone|windows ce|xda |xda_)/i', $_SERVER['HTTP_USER_AGENT'])) {
+            return true;
+        } else {
+            return false;
+        }
+    }
+
     /**
      * 当前URL地址中的scheme参数
      * @access public