function getBrowser(){
$sys = $_SERVER['HTTP_USER_AGENT'];
if(stripos($sys, "NetCaptor") > 0){
$exp[0] = "NetCaptor";
$exp[1] = "";
}elseif(stripos($sys, "Firefox/") > 0){
preg_match("/Firefox\/([^;)]+)+/i", $sys, $b);
$exp[0] = "Mozilla Firefox";
$exp[1] = $b[1];
}elseif(stripos($sys, "MAXTHON") > 0){
preg_match("/MAXTHON\s+([^;)]+)+/i", $sys, $b);
preg_match("/MSIE\s+([^;)]+)+/i", $sys, $ie);
// $exp = $b[0]." (IE".$ie[1].")";
$exp[0] = $b[0]." (IE".$ie[1].")";
$exp[1] = $ie[1];
}elseif(stripos($sys, "MSIE") > 0){
preg_match("/MSIE\s+([^;)]+)+/i", $sys, $ie);
//$exp = "Internet Explorer ".$ie[1];
$exp[0] = "Internet Explorer";
$exp[1] = $ie[1];
}elseif(stripos($sys, "Netscape") > 0){
$exp[0] = "Netscape";
$exp[1] = "";
}elseif(stripos($sys, "Opera") > 0){
$exp[0] = "Opera";
$exp[1] = "";
}elseif(stripos($sys, "Chrome") > 0){
$exp[0] = "Chrome";
$exp[1] = "";
}else{
$exp = "未知浏览器";
$exp[1] = "";
}
return $exp;
}