php获取用户浏览器版本代码

function getbrowse() 
{ 
    $agent = $_server[&＃39;http_user_agent&＃39;]; 
    $browser = &＃39;&＃39;; 
    $browserver = &＃39;&＃39;; 
    $browser = array(&＃39;lynx&＃39;, &＃39;mosaic&＃39;, &＃39;aol&＃39;, &＃39;opera&＃39;, &＃39;java&＃39;, &＃39;macweb&＃39;, &＃39;webexplorer&＃39;, &＃39;omniweb&＃39;); 
    for($i = 0; $i <= 7; $i ++){ 
        if(strpos($agent, $browsers[$i])){ 
            $browser = $browsers[$i]; 
            $browserver = &＃39;&＃39;; 
        } 
    } 
    if(ereg(&＃39;mozilla&＃39;, $agent) && !ereg(&＃39;msie&＃39;, $agent)){ 
        $temp = explode(&＃39;(&＃39;, $agent); 
        $part = $temp[0]; 
        $temp = explode(&＃39;/&＃39;, $part); 
        $browserver = $temp[1]; 
        $temp = explode(&＃39; &＃39;, $browserver); 
        $browserver = $temp[0]; 
        $browserver = preg_replace(&＃39;/([d.]+)/&＃39;, &＃39;1&＃39;, $browserver); 
        $browserver = $browserver; 
        $browser = &＃39;netscape navigator&＃39;; 
    } 
    if(ereg(&＃39;mozilla&＃39;, $agent) && ereg(&＃39;opera&＃39;, $agent)) { 
        $temp = explode(&＃39;(&＃39;, $agent); 
        $part = $temp[1]; 
        $temp = explode(&＃39;)&＃39;, $part); 
        $browserver = $temp[1]; 
        $temp = explode(&＃39; &＃39;, $browserver); 
        $browserver = $temp[2]; 
        $browserver = preg_replace(&＃39;/([d.]+)/&＃39;, &＃39;1&＃39;, $browserver); 
        $browserver = $browserver; 
        $browser = &＃39;opera&＃39;; 
    } 
    if(ereg(&＃39;mozilla&＃39;, $agent) && ereg(&＃39;msie&＃39;, $agent)){ 
        $temp = explode(&＃39;(&＃39;, $agent); 
        $part = $temp[1]; 
        $temp = explode(&＃39;;&＃39;, $part); 
        $part = $temp[1]; 
        $temp = explode(&＃39; &＃39;, $part); 
        $browserver = $temp[2]; 
        $browserver = preg_replace(&＃39;/([d.]+)/&＃39;,&＃39;1&＃39;,$browserver); 
        $browserver = $browserver; 
        $browser = &＃39;internet explorer&＃39;; 
    } 
    if($browser != &＃39;&＃39;){ 
        $browseinfo = $browser.&＃39; &＃39;.$browserver; 
    } else { 
        $browseinfo = false; 
    }
    return $browseinfo; 
} 
//应用方法 
//在ie中 
echo getbrowse(); //internet explorer 6.0 
//在firefox中 
echo getbrowse() ;//netscape navigator 5.0