php通过$_SERVER['HTTP_USER_AGENT']获取浏览器相关参数

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php通过$_SERVER['HTTP_USER_AGENT']可以获取浏览器很多相关的参数；

//获取浏览器
function getBrowse()
{
global $_SERVER;
$Agent = $_SERVER['HTTP_USER_AGENT'];
$browseinfo='';
if(ereg('Mozilla', $Agent) && !ereg('MSIE', $Agent)){
$browseinfo = 'Netscape Navigator';
}
if(ereg('Opera', $Agent)) {
$browseinfo = 'Opera';
}
if(ereg('Mozilla', $Agent) && ereg('MSIE', $Agent)){

$browseinfo = 'Internet Explorer';
}
if(ereg('Chrome', $Agent)){
$browseinfo="Chrome";
}
if(ereg('Safari', $Agent)){
$browseinfo="Safari";
}
if(ereg('Firefox', $Agent)){
$browseinfo="Firefox";
}

return $browseinfo;
}
//获取ip
function getIP ()
{
global $_SERVER;
if (getenv('HTTP_CLIENT_IP')) {
$ip = getenv('HTTP_CLIENT_IP');
} else if (getenv('HTTP_X_FORWARDED_FOR')) {
$ip = getenv('HTTP_X_FORWARDED_FOR');
} else if (getenv('REMOTE_ADDR')) {
$ip = getenv('REMOTE_ADDR');
} else {
$ip = $_SERVER['REMOTE_ADDR'];
}
return $ip;
}
//获取用户系统
function getOS ()
{
global $_SERVER;
$agent = $_SERVER['HTTP_USER_AGENT'];
$os = false;
if (eregi('win', $agent) && strpos($agent, '95')){
$os = 'Windows 95';
}elseif (eregi('win 9x', $agent) && strpos($agent, '4.90')){
$os = 'Windows ME';
}elseif (eregi('win', $agent) && ereg('98', $agent)){
$os = 'Windows 98';
}elseif (eregi('win', $agent) && eregi('nt 5.1', $agent)){
$os = 'Windows XP';
}elseif (eregi('win', $agent) && eregi('nt 5.2', $agent)){
$os = 'Windows 2003';
}elseif (eregi('win', $agent) && eregi('nt 5', $agent)){
$os = 'Windows 2000';
}elseif (eregi('win', $agent) && eregi('nt', $agent)){
$os = 'Windows NT';
}elseif (eregi('win', $agent) && ereg('32', $agent)){
$os = 'Windows 32';
}elseif (eregi('linux', $agent)){
$os = 'Linux';
}elseif (eregi('unix', $agent)){
$os = 'Unix';
}elseif (eregi('sun', $agent) && eregi('os', $agent)){
$os = 'SunOS';
}elseif (eregi('ibm', $agent) && eregi('os', $agent)){
$os = 'IBM OS/2';
}elseif (eregi('Mac', $agent) && eregi('PC', $agent)){
$os = 'Macintosh';
}elseif (eregi('PowerPC', $agent)){
$os = 'PowerPC';
}elseif (eregi('AIX', $agent)){
$os = 'AIX';
}elseif (eregi('HPUX', $agent)){
$os = 'HPUX';
}elseif (eregi('NetBSD', $agent)){
$os = 'NetBSD';
}elseif (eregi('BSD', $agent)){
$os = 'BSD';
}elseif (ereg('OSF1', $agent)){
$os = 'OSF1';
}elseif (ereg('IRIX', $agent)){
$os = 'IRIX';
}elseif (eregi('FreeBSD', $agent)){
$os = 'FreeBSD';
}elseif (eregi('teleport', $agent)){
$os = 'teleport';
}elseif (eregi('flashget', $agent)){
$os = 'flashget';
}elseif (eregi('webzip', $agent)){
$os = 'webzip';
}elseif (eregi('offline', $agent)){
$os = 'offline';
}else{
$os = 'Unknown';
}
return $os;
}

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