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一个浏览器检查类

一个浏览器检查类

<?php
//原作者：epsilon7
//SonyMusic(sonymusic@163.net)
class BrowserDetector {
 var $UA = ""; //$HTTP_USER_AGENT的内容
 var $BROWSER= "Unknown"; //浏览器类型
 var $PLATFORM = "Unknown"; //操作系统
 var $VERSION= ""; //浏览器版本号
 var $MAJORVER = ""; //浏览器主版本号
 var $MINORVER = ""; //浏览器副版本号
 /* 构造函数开始 */
 function BrowserDetector(){
 $this->UA = getenv(HTTP_USER_AGENT);
 $preparens = "";
 $parens = "";
 $i = strpos($this->UA,"(");
 if ($i >= 0) {
 $preparens = trim(substr($this->UA,0,$i));
 $parens = substr($this->UA,$i+1,strlen($this->UA));
 $j = strpos($parens,")");
 if($j>=0) {
 $parens = substr($parens,0,$j);
 }
 }
 else {
 $preparens = $this->UA;
 }
 $browVer = $preparens;
 $token = trim(strtok($parens,";"));
 while($token) {
 if($token=="compatible") {
 }
 elseif(preg_match("/MSIE/i","$token")) {
 $browVer = $token;
 }
 elseif(preg_match("/Opera/i","$token")) {
 $browVer = $token;
 }
 elseif(preg_match("/X11/i","$token") || preg_match("/SunOS/i","$token") || preg_match ("/Linux/i","$token")) {
 $this->PLATFORM = "Unix";
 }
 elseif(preg_match("/Win/i","$token")) {
 $this->PLATFORM = $token;
 }
 elseif(preg_match("/Mac/i","$token") || preg_match("/PPC/i","$token")) {
 $this->PLATFORM = $token;
 }
 $token = strtok(";");
 }
 $msieIndex = strpos($browVer,"MSIE");
 if($msieIndex >= 0) {
 $browVer = substr($browVer,$msieIndex,strlen($browVer));
 }
 $leftover = "";
 if(substr($browVer,0,strlen("Mozilla")) == "Mozilla") {
 $this->BROWSER = "Netscape";
 $leftover=substr($browVer,strlen("Mozilla")+1,strlen($browVer));
 }
 elseif(substr($browVer,0,strlen("Lynx")) == "Lynx") {
 $this->BROWSER = "Lynx";
 $leftover=substr($browVer,strlen("Lynx")+1,strlen($browVer));
 }
 elseif(substr($browVer,0,strlen("MSIE")) == "MSIE") {
 $this->BROWSER = "IE";
 $leftover=substr($browVer,strlen("MSIE")+1,strlen($browVer));
 }
 elseif(substr($browVer,0,strlen("Microsoft Internet Explorer")) == "Microsoft Internet Explorer") {
 $this->BROWSER = "IE";
 $leftover=substr($browVer,strlen("Microsoft Internet Explorer")+1,strlen($browVer));
 }
 elseif(substr($browVer,0,strlen("Opera")) == "Opera") {
 $this->BROWSER = "Opera";
 $leftover=substr($browVer,strlen("Opera")+1,strlen($browVer));
 }
 $leftover = trim($leftover);
 $i=strpos($leftover," ");
 if($i > 0) {
 $this->VERSION = substr($leftover,0,$i);
 }
 else {
 $this->VERSION = $leftover;
 }
 $j = strpos($this->VERSION,".");
 if($j >= 0) {
 $this->MAJORVER = substr($this->VERSION,0,$j);
 $this->MINORVER = substr($this->VERSION,$j+1,strlen($this->VERSION));
 }
 else {
 $this->MAJORVER = $this->VERSION;
 }
 }
}

//测试程序开始
$test=new browserdetector;
echo $test->UA." ";
echo $test->BROWSER." ";
echo $test->PLATFORM." ";
echo $test->VERSION." ";
echo $test->MAJORVER." ";
echo $test->MINORVER." ";
?>

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