PHP和JS判断手机还是电脑访问

当用户使用手机等移动终端访问网站时，我们可以通过程序检测用户终端类型，如果是手机用户，则引导用户访问适配手机屏幕的移动站点。本文将介绍分别使用PHP和JAVASCRIPT代码判断用户终端类型。

PHP版

我们使用PHP的$_SERVER['HTTP_USER_AGENT']来获取手机用户浏览器的用户代理，然后匹配已有的各种手机浏览器代理库，如果含有匹配的关键字，则判断为手机（移动终端）用户。

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","iphone","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; 
} 

Javascript版

您也可以直接在前端页面上加入一段Javascript脚本来判断用户的终端类型。Javascript也是通过获取浏览器的user-agent信息，然后匹配已有的user-agent信息库。

if (navigator.userAgent.match(/(iPhone|iPod|Android|ios|iOS|iPad|Blackerry|WebOS|Symbian|Windows Phone|Phone|Nokia|UCWEB)/i)) {
    alert('手机');
}else{
    alert('PC');
}