PHP識別電腦還是手機訪問網站

function isMobile(){
$useragent=isset($_SERVER[`HTTP_USER_AGENT`]) ? $_SERVER[`HTTP_USER_AGENT`] : ”;
$useragent_commentsblock=preg_match(‘|(.*?)|’,$useragent,$matches)>0?$matches[0]:”;
function CheckSubstrs($substrs,$text){
foreach($substrs as $substr)
if(false!==strpos($text,$substr)){
return true;
}
return false;
}
$mobile_os_list=array(‘Google Wireless Transcoder’,`Windows CE’,`WindowsCE’,`Symbian’,`Android’,`armv6l’,`armv5′,’Mobile’,`CentOS’,`mowser’,`AvantGo’,`Opera Mobi’,`J2ME/MIDP’,`Smartphone’,`Go.Web’,`Palm’,`iPAQ’);
$mobile_token_list=array(‘Profile/MIDP’,`Configuration/CLDC-’,’160×160′,’176×220′,’240×240′,’240×320′,’320×240′,’UP.Browser’,`UP.Link’,`SymbianOS’,`PalmOS’,`PocketPC’,`SonyEricsson’,`Nokia’,`BlackBerry’,`Vodafone’,`BenQ’,`Novarra-Vision’,`Iris’,`NetFront’,`HTC_’,`Xda_’,`SAMSUNG-SGH’,`Wapaka’,`DoCoMo’,`iPhone’,`iPod’);

$found_mobile=CheckSubstrs($mobile_os_list,$useragent_commentsblock) ||
CheckSubstrs($mobile_token_list,$useragent);

if ($found_mobile){
return true;
}else{
return false;
}
}
if (isMobile())
echo ‘手機登入’;
else
echo ‘電腦登入’;