PHP判断客户端UA
如何用php判断一个客户端是手机还是电脑?其实很简单,开发人员都知道,通过浏览器访问网站时,浏览器都会向服务器发送UA,即User Agent(用户代理)。不同浏览器、同一浏览器的不同版本、手机浏览器、电脑端的浏览器的UA都是不一样的。我们只要写代程序获取这段UA,然后判断UA是什么,然后就可以区分出是手机还是电脑了。
下面,通过PHP代码来判断访客的浏览器UA是否为手机浏览器,然后自动跳转到相应的页面:
<?php function is_mobile(){ //正则表达式,批配不同手机浏览器UA关键词。 $regex_match="/(nokia|iphone|android|motorola|^mot\-|softbank|foma|docomo|kddi|up\.browser|up\.link|"; $regex_match.="htc|dopod|blazer|netfront|helio|hosin|huawei|novarra|CoolPad|webos|techfaith|palmsource|"; $regex_match.="blackberry|alcatel|amoi|ktouch|nexian|samsung|^sam\-|s[cg]h|^lge|ericsson|philips|sagem|wellcom|bunjalloo|maui|"; $regex_match.="symbian|smartphone|midp|wap|phone|windows ce|iemobile|^spice|^bird|^zte\-|longcos|pantech|gionee|^sie\-|portalmmm|"; $regex_match.="jig\s browser|hiptop|^ucweb|^benq|haier|^lct|opera\s*mobi|opera\*mini|320x320|240x320|176x220"; $regex_match.=")/i"; return isset($_SERVER['HTTP_X_WAP_PROFILE']) or isset($_SERVER['HTTP_PROFILE']) or preg_match($regex_match, strtolower($_SERVER['HTTP_USER_AGENT'])); //如果UA中存在上面的关键词则返回真。 } if(is_mobile()) { //如果为真,则进行WAP页面。 header( "HTTP/1.1 301 Moved Permanently"); header("Location: http://www.966266.com/wap.php"); }else { //如果为假,则进行WEB页面。 header( "HTTP/1.1 301 Moved Permanently"); header("Location: http://www.966266.com/"); } ?>

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