检查浏览器版本类
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")) == "MicrosoftInternet 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."";?>
