if(ereg("windows NT 5.1",$_SERVER["HTTP_USER_AGENT"])){
$os = "windows exsperience(XP)";
}elseif(ereg("windows",$_SERVER["HTTP_USER_AGENT"])){
$os = "windows";
}elseif(ereg("windows7",$_SERVER["HTTP_USER_AGENT"])){
$os = "windows7";
}elseif(ereg("Mac",$_SERVER["HTTP_USER_AGENT"]))
|| (ereg("PPC",$_SERVER["HTTP_USER_AGENT:])){
$os = "MacOs";
}elseif(ereg("Linux",$_SERVER["HTTP_USER_AGENT"])){
$os = "linux";
}elseif(ereg("FreeBsd",$_SERVER["HTTP_USER_AGENT"])){
$os = "FreeBsd";
}elseif(ereg("SunOs",$_SERVER["HTTP_USER_AGENT"])){
$os = "SunOs";
}elseif(ereg("IRIX",$_SERVER["HTTP_USER_AGENT"])){
$os = "IRIX";
}elseif(ereg("BeOS",$_SERVER["HTTP_USER_AGENT"])){
$os = "BeOS";
}elseif(ereg("OS/2",$_SERVER["HTTP_USER_AGENT"])){
$os = "OS/2";
}elseif(ereg("AIX",$_SERVER["HTTP_USER_AGENT"])){
$os = "AIX";
}else{
$os = "Belum dikenal";
}
echo"
Sistem operasi anda adalah : ".$os;
?>
