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一个浏览器检查类

时间:2021-07-01 10:21:17 帮助过:19人阅读

//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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