Sitenize Giren Kullanıcının Bilgilerini Alan Fonksiyon

<?php
function browser_al($useragent = '')
{
    if ($useragent == '') 
    { 
        $useragent = $_SERVER['HTTP_USER_AGENT']; 
    }
    $browser_name = '';
    $browsers = array();
    
    $browsers[] = array('name' => 'AmigaVoyager', 'useragent' => 'AmigaVoyager');
    $browsers[] = array('name' => 'Apple Generic', 'useragent' => 'CFNetwork');                
    $browsers[] = array('name' => 'Camino', 'useragent' => 'Camino');
    $browsers[] = array('name' => 'Ensemble2', 'useragent' => 'Ensemble2');
    $browsers[] = array('name' => 'Epiphany', 'useragent' => 'Epiphany');
    $browsers[] = array('name' => 'firefox', 'useragent' => 'Firefox');  
    $browsers[] = array('name' => 'firefox', 'useragent' => 'Firefox/1.0');
    $browsers[] = array('name' => 'firefox', 'useragent' => 'Firefox/1.5');
    $browsers[] = array('name' => 'firefox', 'useragent' => 'BonEcho');
    $browsers[] = array('name' => 'firefox', 'useragent' => 'Firefox/2');
    $browsers[] = array('name' => 'firefox', 'useragent' => 'Firefox/3');
    $browsers[] = array('name' => 'firefox', 'useragent' => 'GranParadiso');
    $browsers[] = array('name' => 'firefox', 'useragent' => 'Phoenix');
    $browsers[] = array('name' => 'firefox', 'useragent' => 'Firebird');
    $browsers[] = array('name' => 'Galeon', 'useragent' => 'Galeon');
    $browsers[] = array('name' => 'Google Chrome', 'useragent' => 'chrome');
    $browsers[] = array('name' => 'iCab', 'useragent' => 'iCab');
    $browsers[] = array('name' => 'Iceweasel', 'useragent' => 'Iceweasel');
    $browsers[] = array('name' => 'ie', 'useragent' => 'MSIE');  
    $browsers[] = array('name' => 'ie', 'useragent' => 'MSIE5.');
    $browsers[] = array('name' => 'ie', 'useragent' => 'MSIE6.');
    $browsers[] = array('name' => 'ie', 'useragent' => 'MSIE7.');
    $browsers[] = array('name' => 'ie', 'useragent' => 'MSIE8.');
    $browsers[] = array('name' => 'K-Meleon', 'useragent' => 'K-Meleon');
    $browsers[] = array('name' => 'Konqueror', 'useragent' => 'Konqueror');
    $browsers[] = array('name' => 'Lynx', 'useragent' => 'Lynx');
    $browsers[] = array('name' => 'Mozilla Minefield', 'useragent' => 'Minefield');
    $browsers[] = array('name' => 'Netscape', 'useragent' => 'Netscape');
    $browsers[] = array('name' => 'NewsCopier', 'useragent' => 'NewsCopier');
    $browsers[] = array('name' => 'opera', 'useragent' => 'Opera');
    $browsers[] = array('name' => 'Pocket Internet Explorer', 'useragent' => 'MicrosoftPocketInternetExplorer');
    $browsers[] = array('name' => 'Pocket Internet Explorer', 'useragent' => 'MSPIE');
    $browsers[] = array('name' => 'Radianrss', 'useragent' => 'radianrss');
    $browsers[] = array('name' => 'RssReader', 'useragent' => 'rssreader.com');
    $browsers[] = array('name' => 'Safari', 'useragent' => 'AppleSyndication');
    $browsers[] = array('name' => 'Safari', 'useragent' => 'Safari');
    $browsers[] = array('name' => 'SeaMonkey', 'useragent' => 'SeaMonkey');
    $browsers[] = array('name' => 'Swiftweasel', 'useragent' => 'Swiftweasel');
    $browsers[] = array('name' => 'Thunderbird', 'useragent' => 'Thunderbird');
    $browsers[] = array('name' => 'Vienna', 'useragent' => 'Vienna');
    
    foreach ($browsers as $browser)
    {
        if (stripos(strtolower($useragent), strtolower($browser['useragent'])) !== FALSE)
        {
            $browser_name = $browser['name'];
        }
    }
    unset($browsers, $browser, $useragent);
    
    if ($browser_name)
    {
        return $browser_name;
    }
    else
    {
        return false;
    }  
}  
?>