它的作用是嗅探您的核心操作系统模型，例如windows nt 5.1作为我自己的模型。
然后，它将Windows nt 5.1 / i传递给Windows XP作为操作系统。
使用：'/windows nt 5.1/i' => 'Windows XP',来自数组。
您可以说是猜测，也可以是近似值，但还是很不错。
<?PHP
$user_agent = $_SERVER['HTTP_USER_AGENT'];
function getOS() {
global $user_agent;
$os_platform = "UnkNown OS Platform";
$os_array = array(
'/windows nt 10/i' => 'Windows 10',
'/windows nt 6.3/i' => 'Windows 8.1',
'/windows nt 6.2/i' => 'Windows 8',
'/windows nt 6.1/i' => 'Windows 7',
'/windows nt 6.0/i' => 'Windows Vista',
'/windows nt 5.2/i' => 'Windows Server 2003/XP x64',
'/windows nt 5.1/i' => 'Windows XP',
'/windows xp/i' => 'Windows XP',
'/windows nt 5.0/i' => 'Windows 2000',
'/windows me/i' => 'Windows ME',
'/win98/i' => 'Windows 98',
'/win95/i' => 'Windows 95',
'/win16/i' => 'Windows 3.11',
'/macintosh|mac os x/i' => 'Mac OS X',
'/mac_powerpc/i' => 'Mac OS 9',
'/linux/i' => 'Linux',
'/ubuntu/i' => 'Ubuntu',
'/iphone/i' => 'iPhone',
'/ipod/i' => 'iPod',
'/ipad/i' => 'iPad',
'/android/i' => 'Android',
'/blackBerry/i' => 'BlackBerry',
'/webos/i' => 'Mobile'
);
foreach ($os_array as $regex => $value)
if (preg_match($regex, $user_agent))
$os_platform = $value;
return $os_platform;
}
function getBrowser() {
global $user_agent;
$browser = "UnkNown Browser";
$browser_array = array(
'/msie/i' => 'Internet Explorer',
'/firefox/i' => 'Firefox',
'/safari/i' => 'Safari',
'/chrome/i' => 'Chrome',
'/edge/i' => 'Edge',
'/opera/i' => 'Opera',
'/netscape/i' => 'netscape',
'/maxthon/i' => 'Maxthon',
'/konqueror/i' => 'Konqueror',
'/mobile/i' => 'Handheld Browser'
);
foreach ($browser_array as $regex => $value)
if (preg_match($regex, $user_agent))
$browser = $value;
return $browser;
}
$user_os = getOS();
$user_browser = getBrowser();
$device_details = "<strong>Browser: </strong>".$user_browser."<br /><strong>Operating System: </strong>".$user_os."";
print_r($device_details);
echo("<br /><br /><br />".$_SERVER['HTTP_USER_AGENT']."");
?>
附加代码：
/* return Operating System */
function operating_system_detection(){
if ( isset( $_SERVER ) ) {
$agent = $_SERVER['HTTP_USER_AGENT'];
}
else {
global $HTTP_SERVER_VARS;
if ( isset( $HTTP_SERVER_VARS ) ) {
$agent = $HTTP_SERVER_VARS['HTTP_USER_AGENT'];
}
else {
global $HTTP_USER_AGENT;
$agent = $HTTP_USER_AGENT;
}
}
$ros[] = array('Windows XP', 'Windows XP');
$ros[] = array('Windows NT 5.1|Windows NT5.1)', 'Windows XP');
$ros[] = array('Windows 2000', 'Windows 2000');
$ros[] = array('Windows NT 5.0', 'Windows 2000');
$ros[] = array('Windows NT 4.0|WinNT4.0', 'Windows NT');
$ros[] = array('Windows NT 5.2', 'Windows Server 2003');
$ros[] = array('Windows NT 6.0', 'Windows Vista');
$ros[] = array('Windows NT 7.0', 'Windows 7');
$ros[] = array('Windows CE', 'Windows CE');
$ros[] = array('(media center pc).([0-9]{1,2}\.[0-9]{1,2})', 'Windows Media Center');
$ros[] = array('(win)([0-9]{1,2}\.[0-9x]{1,2})', 'Windows');
$ros[] = array('(win)([0-9]{2})', 'Windows');
$ros[] = array('(windows)([0-9x]{2})', 'Windows');
// Doesn't seem like these are necessary...not totally sure though..
//$ros[] = array('(winnt)([0-9]{1,2}\.[0-9]{1,2}){0,1}', 'Windows NT');
//$ros[] = array('(windows nt)(([0-9]{1,2}\.[0-9]{1,2}){0,1})', 'Windows NT'); // fix by bg
$ros[] = array('Windows ME', 'Windows ME');
$ros[] = array('Win 9x 4.90', 'Windows ME');
$ros[] = array('Windows 98|Win98', 'Windows 98');
$ros[] = array('Windows 95', 'Windows 95');
$ros[] = array('(windows)([0-9]{1,2}\.[0-9]{1,2})', 'Windows');
$ros[] = array('win32', 'Windows');
$ros[] = array('(java)([0-9]{1,2}\.[0-9]{1,2}\.[0-9]{1,2})', 'Java');
$ros[] = array('(Solaris)([0-9]{1,2}\.[0-9x]{1,2}){0,1}', 'Solaris');
$ros[] = array('dos x86', 'DOS');
$ros[] = array('unix', 'Unix');
$ros[] = array('Mac OS X', 'Mac OS X');
$ros[] = array('Mac_PowerPC', 'Macintosh PowerPC');
$ros[] = array('(mac|Macintosh)', 'Mac OS');
$ros[] = array('(sunos)([0-9]{1,2}\.[0-9]{1,2}){0,1}', 'SunOS');
$ros[] = array('(beos)([0-9]{1,2}\.[0-9]{1,2}){0,1}', 'BeOS');
$ros[] = array('(risc os)([0-9]{1,2}\.[0-9]{1,2})', 'RISC OS');
$ros[] = array('os/2', 'OS/2');
$ros[] = array('freebsd', 'FreeBSD');
$ros[] = array('openbsd', 'OpenBSD');
$ros[] = array('netbsd', 'NetBSD');
$ros[] = array('irix', 'IRIX');
$ros[] = array('plan9', 'Plan9');
$ros[] = array('osf', 'OSF');
$ros[] = array('aix', 'AIX');
$ros[] = array('GNU Hurd', 'GNU Hurd');
$ros[] = array('(fedora)', 'Linux - Fedora');
$ros[] = array('(kubuntu)', 'Linux - Kubuntu');
$ros[] = array('(ubuntu)', 'Linux - Ubuntu');
$ros[] = array('(debian)', 'Linux - Debian');
$ros[] = array('(CentOS)', 'Linux - CentOS');
$ros[] = array('(Mandriva).([0-9]{1,3}(\.[0-9]{1,3})?(\.[0-9]{1,3})?)', 'Linux - Mandriva');
$ros[] = array('(SUSE).([0-9]{1,3}(\.[0-9]{1,3})?(\.[0-9]{1,3})?)', 'Linux - SUSE');
$ros[] = array('(Dropline)', 'Linux - Slackware (Dropline GNOME)');
$ros[] = array('(ASPLinux)', 'Linux - ASPLinux');
$ros[] = array('(Red Hat)', 'Linux - Red Hat');
// Loads of Linux machines will be detected as unix.
// Actually, all of the linux machines I've checked have the 'X11' in the User Agent.
//$ros[] = array('X11', 'Unix');
$ros[] = array('(linux)', 'Linux');
$ros[] = array('(amigaos)([0-9]{1,2}\.[0-9]{1,2})', 'AmigaOS');
$ros[] = array('amiga-aweb', 'AmigaOS');
$ros[] = array('amiga', 'Amiga');
$ros[] = array('AvantGo', 'PalmOS');
//$ros[] = array('(Linux)([0-9]{1,2}\.[0-9]{1,2}\.[0-9]{1,3}(rel\.[0-9]{1,2}){0,1}-([0-9]{1,2}) i([0-9]{1})86){1}', 'Linux');
//$ros[] = array('(Linux)([0-9]{1,2}\.[0-9]{1,2}\.[0-9]{1,3}(rel\.[0-9]{1,2}){0,1} i([0-9]{1}86)){1}', 'Linux');
//$ros[] = array('(Linux)([0-9]{1,2}\.[0-9]{1,2}\.[0-9]{1,3}(rel\.[0-9]{1,2}){0,1})', 'Linux');
$ros[] = array('[0-9]{1,2}\.[0-9]{1,2}\.[0-9]{1,3})', 'Linux');
$ros[] = array('(webtv)/([0-9]{1,2}\.[0-9]{1,2})', 'WebTV');
$ros[] = array('Dreamcast', 'Dreamcast OS');
$ros[] = array('GetRight', 'Windows');
$ros[] = array('go!zilla', 'Windows');
$ros[] = array('gozilla', 'Windows');
$ros[] = array('gulliver', 'Windows');
$ros[] = array('ia archiver', 'Windows');
$ros[] = array('NetPositive', 'Windows');
$ros[] = array('mass downloader', 'Windows');
$ros[] = array('microsoft', 'Windows');
$ros[] = array('offline explorer', 'Windows');
$ros[] = array('teleport', 'Windows');
$ros[] = array('web downloader', 'Windows');
$ros[] = array('webcapture', 'Windows');
$ros[] = array('webcollage', 'Windows');
$ros[] = array('webcopier', 'Windows');
$ros[] = array('webstripper', 'Windows');
$ros[] = array('webzip', 'Windows');
$ros[] = array('wget', 'Windows');
$ros[] = array('Java', 'UnkNown');
$ros[] = array('flashget', 'Windows');
// delete next line if the script show not the right OS
//$ros[] = array('(PHP)/([0-9]{1,2}.[0-9]{1,2})', 'PHP');
$ros[] = array('MS FrontPage', 'Windows');
$ros[] = array('(msproxy)/([0-9]{1,2}.[0-9]{1,2})', 'Windows');
$ros[] = array('(msie)([0-9]{1,2}.[0-9]{1,2})', 'Windows');
$ros[] = array('libwww-perl', 'Unix');
$ros[] = array('UP.Browser', 'Windows CE');
$ros[] = array('NetAnts', 'Windows');
$file = count ( $ros );
$os = '';
for ( $n=0 ; $n<$file ; $n++ ){
if ( preg_match('/'.$ros[$n][0].'/i' , $agent, $name)){
$os = @$ros[$n][1].' '.@$name[2];
break;
}
}
return trim ( $os );
}
编辑：2015年4月12日
昨天我注意到一个问题，该问题可能与此次问答有关，并且可能对某些问题有所帮助。关于：
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