ThinkPHP在入口文件中判断是手机还是PC端访问网站

<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006-2014 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------

// 应用入口文件

// 检测PHP环境
if(version_compare(PHP_VERSION,'5.3.0','<')) die('require PHP > 5.3.0 !');
//判断是手机登录还是电脑登录
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;

    //此条摘自TPM智能切换模板引擎，适合TPM开发
    if(isset ($_SERVER['HTTP_CLIENT']) &&'PhoneClient'==$_SERVER['HTTP_CLIENT'])
        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
    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'
        );
        //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;
}
// 开启调试模式建议开发阶段开启部署阶段注释或者设为false
define('APP_DEBUG',True);

if(ismobile()){
   //定义title的公众部分
   header("Location: http://m.enkiorder.com/");
   exit;
   // 定义应用目录
   //define('APP_PATH','./Mobile/');
}else
{
   // 定义应用目录
   define('APP_PATH','./Application/');
}

define('IMAGE_PATH',dirname(__FILE__));
// 引入ThinkPHP入口文件
require './ThinkPHP/ThinkPHP.php';

// 亲^_^ 后面不需要任何代码了就是如此简单