2010是移动设备大战的一年，各种各样的移动设备充斥着市场，智能手机和平板电脑已经开始慢慢的影响着我们的生活，它们已经把我们带入了一个新的时代”移动互联网时代”，愈来愈多的人开始使用移动设备浏览网页，不只局限于桌面浏览网页了。接下来，基于不同的设备加载不同的网站，是我们Web开发者要做的事情。目前通过”User-Agent”检测判断移动设备是比较常用的方法。接下来，让我们看一看如何使用JavaScript or PHP 来检测移动设备。

iPhone & iPod Detection

The JavaScript

if((navigator.userAgent.match(/iPhone/i)) || (navigator.userAgent.match(/iPod/i))) {
	 if (document.cookie.indexOf("iphone_redirect=false") == -1){ 
		window.location = "http://yoursite.com/iphone";
	}
}

The PHP

if(strstr($_SERVER['HTTP_USER_AGENT'],'iPhone') || strstr($_SERVER['HTTP_USER_AGENT'],'iPod')) {
  	header('Location: http://yoursite.com/iphone');
  	exit();
}

Android Detection

The JavaScript

if(navigator.userAgent.match(/Android/i)) {
	// Redirect to Android-site?
  	window.location = 'http://android.yoursite.com';
}

The PHP

if(stripos($_SERVER['HTTP_USER_AGENT'],'Android') !== false) {
  	header('Location: http://android.yoursite.com');
  	exit();
}

用 .htaccess 来检测Android

RewriteCond %{HTTP_USER_AGENT} ^.*Android.*$
RewriteRule ^(.*)$ http://android.yoursite.com [R=301]

php判断用户是否使用手机设备

// 判断是否属手机
function is_mobile() {
    $user_agent = $_SERVER['HTTP_USER_AGENT'];
    $mobile_agents = Array("240x320","acer","acoon","acs-","abacho","ahong","airness","alcatel","amoi","android","anywhereyougo.com","applewebkit/525","applewebkit/532","asus","audio","au-mic","avantogo","becker","benq","bilbo","bird","blackberry","blazer","bleu","cdm-","compal","coolpad","danger","dbtel","dopod","elaine","eric","etouch","fly ","fly_","fly-","go.web","goodaccess","gradiente","grundig","haier","hedy","hitachi","htc","huawei","hutchison","inno","ipad","ipaq","ipod","jbrowser","kddi","kgt","kwc","lenovo","lg ","lg2","lg3","lg4","lg5","lg7","lg8","lg9","lg-","lge-","lge9","longcos","maemo","mercator","meridian","micromax","midp","mini","mitsu","mmm","mmp","mobi","mot-","moto","nec-","netfront","newgen","nexian","nf-browser","nintendo","nitro","nokia","nook","novarra","obigo","palm","panasonic","pantech","philips","phone","pg-","playstation","pocket","pt-","qc-","qtek","rover","sagem","sama","samu","sanyo","samsung","sch-","scooter","sec-","sendo","sgh-","sharp","siemens","sie-","softbank","sony","spice","sprint","spv","symbian","tablet","talkabout","tcl-","teleca","telit","tianyu","tim-","toshiba","tsm","up.browser","utec","utstar","verykool","virgin","vk-","voda","voxtel","vx","wap","wellco","wig browser","wii","windows ce","wireless","xda","xde","zte");
    $is_mobile = false;
    foreach ($mobile_agents as $device) {
        if (stristr($user_agent, $device)) {
            $is_mobile = true;
            break;
        }
    }
    return $is_mobile;
}
// 执行
if( is_mobile() ){
   //Your Code
}