php检测终端设备是平板、手机还是电脑

这段代码可以帮助你检测用户的终端设备室平板电脑，手机还是桌面电脑，分别返回"tablet","mobile","desktop"

<?php

$ua=$_SERVER['HTTP_USER_AGENT']；

 
function userAgent($ua){
## This credit must stay intact (Unless you have a deal with @lukasmig or frimerlukas@gmail.com
## Made by Lukas Frimer Tholander from Made In Osted Webdesign.
## Price will be $2

$iphone = strstr(strtolower($ua), 'mobile'); //Search for 'mobile' in user-agent (iPhone have that)
$android = strstr(strtolower($ua), 'android'); //Search for 'android' in user-agent
$windowsPhone = strstr(strtolower($ua), 'phone'); //Search for 'phone' in user-agent (Windows Phone uses that)

function androidTablet($ua){ //Find out if it is a tablet
if(strstr(strtolower($ua), 'android') ){//Search for android in user-agent
if(!strstr(strtolower($ua), 'mobile')){ //If there is no ''mobile' in user-agent (Android have that on their phones, but not tablets)
return true;
}
}
}
$androidTablet = androidTablet($ua); //Do androidTablet function
$ipad = strstr(strtolower($ua), 'ipad'); //Search for iPad in user-agent

if($androidTablet || $ipad){ //If it's a tablet (iPad / Android)
return 'tablet';
}
elseif($iphone && !$ipad || $android && !$androidTablet || $windowsPhone){ //If it's a phone and NOT a tablet
return 'mobile';
}
else{ //If it's not a mobile device
return 'desktop';
}
}
?>