Gazelle/classes/useragent.class.php

<?php

class UserAgent
{
    private static $Browsers = array(
    // Less popular
    'Shiira'     => 'Shiira',
    'Songbird'   => 'Songbird',
    'SeaMonkey'  => 'SeaMonkey',
    'OmniWeb'    => 'OmniWeb',
    'Camino'     => 'Camino',
    'Chimera'    => 'Chimera',
    'Epiphany'   => 'Epiphany',
    'Konqueror'  => 'Konqueror',
    'Iceweasel'  => 'Iceweasel',
    'Lynx'       => 'Lynx',
    'Links'      => 'Links',
    'libcurl'    => 'cURL',
    'midori'     => 'Midori',
    'Blackberry' => 'BlackBerry Browser',
    // Big names
    'Firefox' => 'Firefox',
    'OPR'     => 'Opera Blink', # Opera 15+ (the version running Blink)
    'Opera'   => 'Opera',
    'Chrome'  => 'Chrome',
    'Safari'  => 'Safari',
    // Put Chrome Frame above IE
    'chromeframe' => 'Chrome Frame',
    'x-clock'     => 'Chrome Frame',
    'MSIE'        => 'Internet Explorer',
    'Trident'     => 'Internet Explorer',
    // Firefox versions
    'Shiretoko'    => 'Firefox (Experimental)',
    'Minefield'    => 'Firefox (Experimental)',
    'GranParadiso' => 'Firefox (Experimental)',
    'Namoroka'     => 'Firefox (Experimental)',
    'AppleWebKit'  => 'WebKit',
    'Mozilla'      => 'Mozilla'
    // Weird shit
    /*
    'WWW-Mechanize' => 'Perl',
    'Wget'          => 'Wget',
    'BTWebClient'   => 'µTorrent',
    'Transmission'  => 'Transmission',
    'Java'          => 'Java',
    'RSS'           => 'RSS Downloader'
    */
  );

    private static $OperatingSystems = array(
    // Mobile
    'SymbianOS'    => 'Symbian',
    'blackberry'   => 'BlackBerry',
    'iphone'       => 'iPhone',
    'ipod'         => 'iPhone',
    'android'      => 'Android',
    'palm'         => 'Palm',
    'mot-razr'     => 'Motorola Razr',
  //'tablet PC'    => 'Windows RT',
  //'ARM; Trident' => 'Windows RT',
    // Windows
    'Windows NT 10.0' => 'Windows 10',
    'Windows NT 6.4'  => 'Windows 10',
    'Windows NT 6.3'  => 'Windows 8.1',
    'Windows 8.1'     => 'Windows 8.1',
    'Windows NT 6.2'  => 'Windows 8',
    'Windows 8'       => 'Windows 8',
    'Windows NT 6.1'  => 'Windows 7',
    'Windows 7'       => 'Windows 7',
    'Windows NT 6.0'  => 'Windows Vista',
    'Windows Vista'   => 'Windows Vista',
    'windows nt 5.2'  => 'Windows 2003',
    'windows 2003'    => 'Windows 2003',
    'windows nt 5.0'  => 'Windows 2000',
    'windows 2000'    => 'Windows 2000',
    'windows nt 5.1'  => 'Windows XP',
    'windows xp'      => 'Windows XP',
    'Win 9x 4.90'     => 'Windows ME',
    'Windows Me'      => 'Windows ME',
    'windows nt'      => 'Windows NT',
    'winnt'           => 'Windows NT',
    'windows 98'      => 'Windows 98',
    'windows ce'      => 'Windows CE',
    'win98'           => 'Windows 98',
    'windows 95'      => 'Windows 95',
    'windows 95'      => 'Windows 95',
    'win95'           => 'Windows 95',
    'win16'           => 'Windows 3.1',
  //'windows'         => 'Windows',
    'cros'            => 'Chrome OS',
    // OS X
    'os x'      => 'Mac OS X',
    'macintosh' => 'Mac OS X',
    'darwin'    => 'Mac OS X',
    // Less popular
    'ubuntu'  => 'Ubuntu',
    'debian'  => 'Debian',
    'fedora'  => 'Fedora',
    'freebsd' => 'FreeBSD',
    'openbsd' => 'OpenBSD',
    'bsd'     => 'BSD',
    'x11'     => 'Linux',
    'gnu'     => 'Linux',
    'linux'   => 'Linux',
    'unix'    => 'Unix',
    'Sun OS'  => 'Sun',
    'Sun'     => 'Sun',
    // Weird shit
    /*
    'WWW-Mechanize' => 'Perl',
    'Wget'          => 'Wget',
    'BTWebClient'   => 'µTorrent',
    'Transmission'  => 'Transmission',
    'Java'          => 'Java',
    'RSS'           => 'RSS Downloader',
    */
    // Catch-all
    'win' => 'Windows',
    'mac' => 'Mac OS X'
  );

    public static function operating_system(&$UserAgentString)
    {
        if (empty($UserAgentString)) {
            return 'Hidden';
        }

        foreach (self::$OperatingSystems as $String => $OperatingSystem) {
            if (stripos($UserAgentString, $String) !== false) {
                return $OperatingSystem;
            }
        }
        return 'Unknown';
    }

    public static function mobile(&$UserAgentString)
    {
        if (strpos($UserAgentString, 'iPad') !== false) {
            return false;
        }

        // "Mobi" catches "Mobile" too
        if (strpos($UserAgentString, 'Device') || strpos($UserAgentString, 'Mobi') || strpos($UserAgentString, 'Mini') || strpos($UserAgentString, 'webOS')) {
            return true;
        }
        return false;
    }

    public static function browser(&$UserAgentString)
    {
        if (empty($UserAgentString)) {
            return 'Hidden';
        }

        $Return = 'Unknown';
        foreach (self::$Browsers as $String => $Browser) {
            if (strpos($UserAgentString, $String) !== false) {
                $Return = $Browser;
                break;
            }
        }
        
        if (self::mobile($UserAgentString)) {
            $Return .= ' Mobile';
        }
        return $Return;
    }
}