一个浏览器检查类

2024-05-04 22:55:13

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一个浏览器检查类

<?php
//原作者：epsilon7
//sonymusic([email protected])
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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