Dave Jarvis' Repositories

<?php
namespace com\whitemagicsoftware;

/**
 * Detects what type of web browser is using the system.
 * 
 * Copyright (C) 2008-2010 Chris Schuld  (chris@chrisschuld.com)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details at:
 * http://www.gnu.org/copyleft/gpl.html
 */
class Browser {
    private $_agent = "";
    private $_browser_name = "";
    private $_version = "";
    private $_platform = "";
    private $_os = "";
    private $_is_aol = false;
    private $_is_mobile = false;
    private $_is_robot = false;
    private $_aol_version = "";

    /** unknown */
    const BROWSER_UNKNOWN = "unknown";
    /** unknown */
    const VERSION_UNKNOWN = "unknown";

    /** Opera */
    const BROWSER_OPERA = "Opera";
    /** Opera Mini */
    const BROWSER_OPERA_MINI = "Opera Mini";
    /** WebTV */
    const BROWSER_WEBTV = "WebTV";
    /** Internet Explorer */
    const BROWSER_IE = "Internet Explorer";
    /** Pocket Internet Explorer */
    const BROWSER_POCKET_IE = "Pocket Internet Explorer";
    /** Konqueror */
    const BROWSER_KONQUEROR = "Konqueror";
    /** iCab */
    const BROWSER_ICAB = "iCab";
    /** OmniWeb */
    const BROWSER_OMNIWEB = "OmniWeb";
    /** Firebird */
    const BROWSER_FIREBIRD = "Firebird";
    /** Firefox */
    const BROWSER_FIREFOX = "Firefox";
    /** Iceweasel */
    const BROWSER_ICEWEASEL = "Iceweasel";
    /** Shiretoko */
    const BROWSER_SHIRETOKO = "Shiretoko";
    /** Mozilla */
    const BROWSER_MOZILLA = "Mozilla";
    /** Amaya */
    const BROWSER_AMAYA = "Amaya";
    /** Lynx */
    const BROWSER_LYNX = "Lynx";
    /** Safari */
    const BROWSER_SAFARI = "Safari";
    /** iPhone */
    const BROWSER_IPHONE = "iPhone";
    /** iPod */
    const BROWSER_IPOD = "iPod";
    /** iPad */
    const BROWSER_IPAD = "iPad";
    /** Chrome */
    const BROWSER_CHROME = "Chrome";
    /** Android */
    const BROWSER_ANDROID = "Android";
    /** GoogleBot */
    const BROWSER_GOOGLEBOT = "GoogleBot";
    /** Yahoo! Slurp */
    const BROWSER_SLURP = "Yahoo! Slurp";
    /** W3C Validator */
    const BROWSER_W3CVALIDATOR = "W3C Validator";
    /** BlackBerry */
    const BROWSER_BLACKBERRY = "BlackBerry";
    /** IceCat */
    const BROWSER_ICECAT = "IceCat";
    /** Nokia S60 OSS Browser */
    const BROWSER_NOKIA_S60 = "Nokia S60 OSS Browser";
    /** Nokia Browser */
    const BROWSER_NOKIA = "Nokia Browser";
    /** MSN Browser */
    const BROWSER_MSN = "MSN Browser";
    /** MSN Bot */
    const BROWSER_MSNBOT = "MSN Bot";
    /** Netscape Navigator */
    const BROWSER_NETSCAPE_NAVIGATOR = "Netscape Navigator";
    /** Galeon */
    const BROWSER_GALEON = "Galeon";
    /** NetPositive */
    const BROWSER_NETPOSITIVE = "NetPositive";
    /** Phoenix */
    const BROWSER_PHOENIX = "Phoenix";

    /** unknown */
    const PLATFORM_UNKNOWN = "unknown";
    /** Windows */
    const PLATFORM_WINDOWS = "Windows";
    /** Windows CE */
    const PLATFORM_WINDOWS_CE = "Windows CE";
    /** Apple */
    const PLATFORM_APPLE = "Apple";
    /** Linux */
    const PLATFORM_LINUX = "Linux";
    /** OS/2 */
    const PLATFORM_OS2 = "OS/2";
    /** BeOS */
    const PLATFORM_BEOS = "BeOS";
    /** iPhone */
    const PLATFORM_IPHONE = "iPhone";
    /** iPod */
    const PLATFORM_IPOD = "iPod";
    /** iPad */
    const PLATFORM_IPAD = "iPad";
    /** BlackBerry */
    const PLATFORM_BLACKBERRY = "BlackBerry";
    /** Nokia */
    const PLATFORM_NOKIA = "Nokia";
    /** FreeBSD */
    const PLATFORM_FREEBSD = "FreeBSD";
    /** OpenBSD */
    const PLATFORM_OPENBSD = "OpenBSD";
    /** NetBSD */
    const PLATFORM_NETBSD = "NetBSD";
    /** SunOS */
    const PLATFORM_SUNOS = "SunOS";
    /** OpenSolaris */
    const PLATFORM_OPENSOLARIS = "OpenSolaris";
    /** Android */
    const PLATFORM_ANDROID = "Android";
     
    /** unknown */
    const OPERATING_SYSTEM_UNKNOWN = "unknown";

    /**
     * Instantiates a new Browser object with the user agent from the
     */
    public function __construct() {
      if( isset( $_SERVER["HTTP_USER_AGENT"] ) ) {
        $this->setUserAgent( $_SERVER["HTTP_USER_AGENT"] );
        $this->determine();
      }
    }

    /**
    * Check to see if the specific browser is valid
    * @param string $browserName
    * @return True if the browser is the specified browser
    */
    function isBrowser($browserName) {
      return( 0 == strcasecmp($this->_browser_name, trim($browserName)));
    }
    /**
    * The name of the browser.  All return types are from the class contants
    * @return string Name of the browser
    */
    public function getBrowser() { return $this->_browser_name; }
    /**
    * Set the name of the browser
    * @param $browser The name of the Browser
    */
    public function setBrowser($browser) { return $this->_browser_name = $browser; }
    /**
    * The name of the platform.  All return types are from the class contants
    * @return string Name of the browser
    */
    public function getPlatform() { return $this->_platform; }
    /**
    * Set the name of the platform
    * @param $platform The name of the Platform
    */
    public function setPlatform($platform) { return $this->_platform = $platform; }
    /**
    * The version of the browser.
    * @return string Version of the browser (will only contain alpha-numeric characters and a period)
    */
    public function getVersion() { return $this->_version; }
    /**
    * Set the version of the browser
    * @param $version The version of the Browser
    */
    public function setVersion($version) { $this->_version = preg_replace("/[^0-9,.,a-z,A-Z-]/","",$version); }
    /**
    * The version of AOL.
    * @return string Version of AOL (will only contain alpha-numeric characters and a period)
    */
    public function getAolVersion() { return $this->_aol_version; }
    /**
    * Set the version of AOL
    * @param $version The version of AOL
    */
    public function setAolVersion($version) { $this->_aol_version = preg_replace("/[^0-9,.,a-z,A-Z]/","",$version); }
    /**
    * Is the browser from AOL?
    * @return boolean True if the browser is from AOL otherwise false
    */
    public function isAol() { return $this->_is_aol; }
    /**
    * Is the browser from a mobile device?
    * @return boolean True if the browser is from a mobile device otherwise false
    */
    public function isMobile() { return $this->_is_mobile; }
    /**
    * Is the browser from a robot (ex Slurp,GoogleBot)?
    * @return boolean True if the browser is from a robot otherwise false
    */
    public function isRobot() { return $this->_is_robot; }
    /**
    * Set the browser to be from AOL
    * @param $isAol
    */
    public function setAol($isAol) { $this->_is_aol = $isAol; }
    /**
     * Set the Browser to be mobile
     * @param boolean $value is the browser a mobile brower or not
     */
    protected function setMobile($value=true) { $this->_is_mobile = $value; }
    /**
     * Set the Browser to be a robot
     * @param boolean $value is the browser a robot or not
     */
    protected function setRobot($value=true) { $this->_is_robot = $value; }
    /**
    * Get the user agent value in use to determine the browser
    * @return string The user agent from the HTTP header
    */
    public function getUserAgent() { return $this->_agent; }
    /**
    * Set the user agent value (the construction will use the HTTP header value - this will overwrite it)
    * @param $agent_string The value for the User Agent
    */
    private function setUserAgent($agent_string) {
        $this->_agent = $agent_string;
    }
    /**
     * Used to determine if the browser is actually "chromeframe"
     * @since 1.7
     * @return boolean True if the browser is using chromeframe
     */
    public function isChromeFrame() {
        return( strpos($this->_agent,"chromeframe") !== false );
    }
    /**
    * Returns a formatted string with a summary of the details of the browser.
    * @return string formatted string with a summary of the browser
    */
    public function __toString() {
        return "<strong>Browser Name:</strong>{$this->getBrowser()}<br/>\n" .
               "<strong>Browser Version:</strong>{$this->getVersion()}<br/>\n" .
               "<strong>Browser User Agent String:</strong>{$this->getUserAgent()}<br/>\n" .
               "<strong>Platform:</strong>{$this->getPlatform()}<br/>";
    }
    /**
     * Protected routine to calculate and determine what the browser is in use (including platform)
     */
    protected function determine() {
        $this->checkPlatform();
        $this->checkBrowsers();
        $this->checkForAol();
    }
    /**
     * Protected routine to determine the browser type
     * @return boolean True if the browser was detected otherwise false
     */
     protected function checkBrowsers() {
        return (
            // well-known, well-used
            // Special Notes:
            // (1) Opera must be checked before FireFox due to the odd
            //     user agents used in some older versions of Opera
            // (2) WebTV is strapped onto Internet Explorer so we must
            //     check for WebTV before IE
            // (3) (deprecated) Galeon is based on Firefox and needs to be
            //     tested before Firefox is tested
            // (4) OmniWeb is based on Safari so OmniWeb check must occur
            //     before Safari
            // (5) Netscape 9+ is based on Firefox so Netscape checks
            //     before FireFox are necessary
            $this->checkBrowserWebTv() ||
            $this->checkBrowserInternetExplorer() ||
            $this->checkBrowserOpera() ||
            $this->checkBrowserGaleon() ||
            $this->checkBrowserNetscapeNavigator9Plus() ||
            $this->checkBrowserFirefox() ||
            $this->checkBrowserChrome() ||
            $this->checkBrowserOmniWeb() ||

            // common mobile
            $this->checkBrowserAndroid() ||
            $this->checkBrowseriPad() ||
            $this->checkBrowseriPod() ||
            $this->checkBrowseriPhone() ||
            $this->checkBrowserBlackBerry() ||
            $this->checkBrowserNokia() ||

            // common bots
            $this->checkBrowserGoogleBot() ||
            $this->checkBrowserMSNBot() ||
            $this->checkBrowserSlurp() ||

            // WebKit base check (post mobile and others)
            $this->checkBrowserSafari() ||
             
            // everyone else
            $this->checkBrowserNetPositive() ||
            $this->checkBrowserFirebird() ||
            $this->checkBrowserKonqueror() ||
            $this->checkBrowserIcab() ||
            $this->checkBrowserPhoenix() ||
            $this->checkBrowserAmaya() ||
            $this->checkBrowserLynx() ||
            $this->checkBrowserShiretoko() ||
            $this->checkBrowserIceCat() ||
            $this->checkBrowserW3CValidator() ||
            $this->checkBrowserMozilla() /* Mozilla is such an open standard that you must check it last */
        );
    }

    /**
     * Determine if the user is using a BlackBerry (last updated 1.7)
     * @return boolean True if the browser is the BlackBerry browser otherwise false
     */
    protected function checkBrowserBlackBerry() {
        if( stripos($this->_agent,"blackberry") !== false ) {
            $aresult = explode("/",stristr($this->_agent,"BlackBerry"));
            $aversion = explode(" ",$aresult[1]);
            $this->setVersion($aversion[0]);
            $this->_browser_name = self::BROWSER_BLACKBERRY;
            $this->setMobile(true);
            return true;
        }
        return false;
    }

    /**
     * Determine if the user is using an AOL User Agent (last updated 1.7)
     * @return boolean True if the browser is from AOL otherwise false
     */
    protected function checkForAol() {
        $this->setAol(false);
        $this->setAolVersion(self::VERSION_UNKNOWN);

        if( stripos($this->_agent,"aol") !== false ) {
            $aversion = explode(" ",stristr($this->_agent, "AOL"));
            $this->setAol(true);
            $this->setAolVersion(preg_replace("/[^0-9\.a-z]/i", "", $aversion[1]));
            return true;
        }
        return false;
    }

    /**
     * Determine if the browser is the GoogleBot or not (last updated 1.7)
     * @return boolean True if the browser is the GoogletBot otherwise false
     */
    protected function checkBrowserGoogleBot() {
        if( stripos($this->_agent,"googlebot") !== false ) {
            $aresult = explode("/",stristr($this->_agent,"googlebot"));
            $aversion = explode(" ",$aresult[1]);
            $this->setVersion(str_replace(";","",$aversion[0]));
            $this->_browser_name = self::BROWSER_GOOGLEBOT;
            $this->setRobot(true);
            return true;
        }
        return false;
    }

    /**
     * Determine if the browser is the MSNBot or not (last updated 1.9)
     * @return boolean True if the browser is the MSNBot otherwise false
     */
    protected function checkBrowserMSNBot() {
        if( stripos($this->_agent,"msnbot") !== false ) {
            $aresult = explode("/",stristr($this->_agent,"msnbot"));
            $aversion = explode(" ",$aresult[1]);
            $this->setVersion(str_replace(";","",$aversion[0]));
            $this->_browser_name = self::BROWSER_MSNBOT;
            $this->setRobot(true);
            return true;
        }
        return false;
    }      
     
    /**
     * Determine if the browser is the W3C Validator or not (last updated 1.7)
     * @return boolean True if the browser is the W3C Validator otherwise false
     */
    protected function checkBrowserW3CValidator() {
        if( stripos($this->_agent,"W3C-checklink") !== false ) {
            $aresult = explode("/",stristr($this->_agent,"W3C-checklink"));
            $aversion = explode(" ",$aresult[1]);
            $this->setVersion($aversion[0]);
            $this->_browser_name = self::BROWSER_W3CVALIDATOR;
            return true;
        }
        else if( stripos($this->_agent,"W3C_Validator") !== false ) {
            // Some of the Validator versions do not delineate w/ a slash - add it back in
            $ua = str_replace("W3C_Validator ", "W3C_Validator/", $this->_agent);
            $aresult = explode("/",stristr($ua,"W3C_Validator"));
            $aversion = explode(" ",$aresult[1]);
            $this->setVersion($aversion[0]);
            $this->_browser_name = self::BROWSER_W3CVALIDATOR;
            return true;
        }
        return false;
    }

    /**
     * Determine if the browser is the Yahoo! Slurp Robot or not (last updated 1.7)
     * @return boolean True if the browser is the Yahoo! Slurp Robot otherwise false
     */
    protected function checkBrowserSlurp() {
        if( stripos($this->_agent,"slurp") !== false ) {
            $aresult = explode("/",stristr($this->_agent,"Slurp"));
            $aversion = explode(" ",$aresult[1]);
            $this->setVersion($aversion[0]);
            $this->_browser_name = self::BROWSER_SLURP;
            $this->setRobot(true);
            $this->setMobile(false);
            return true;
        }
        return false;
    }

    /**
     * Determine if the browser is Internet Explorer or not (last updated 1.7)
     * @return boolean True if the browser is Internet Explorer otherwise false
     */
    protected function checkBrowserInternetExplorer() {

        // Test for v1 - v1.5 IE
        if( stripos($this->_agent,"microsoft internet explorer") !== false ) {
            $this->setBrowser(self::BROWSER_IE);
            $this->setVersion("1.0");
            $aresult = stristr($this->_agent, "/");
            if( preg_match("/308|425|426|474|0b1/i", $aresult) ) {
                $this->setVersion("1.5");
            }
            return true;
        }
        // Test for versions > 1.5
        else if( stripos($this->_agent,"msie") !== false && stripos($this->_agent,"opera") === false ) {
            // See if the browser is the odd MSN Explorer
            if( stripos($this->_agent,"msnb") !== false ) {
                $aresult = explode(" ",stristr(str_replace(";","; ",$this->_agent),"MSN"));
                $this->setBrowser( self::BROWSER_MSN );
                $this->setVersion(str_replace(array("(",")",";"),"",$aresult[1]));
                return true;
            }
            $aresult = explode(" ",stristr(str_replace(";","; ",$this->_agent),"msie"));
            $this->setBrowser( self::BROWSER_IE );
            $this->setVersion(str_replace(array("(",")",";"),"",$aresult[1]));
            return true;
        }
        // Test for Pocket IE
        else if( stripos($this->_agent,"mspie") !== false || stripos($this->_agent,"pocket") !== false ) {
            $aresult = explode(" ",stristr($this->_agent,"mspie"));
            $this->setPlatform( self::PLATFORM_WINDOWS_CE );
            $this->setBrowser( self::BROWSER_POCKET_IE );
            $this->setMobile(true);

            if( stripos($this->_agent,"mspie") !== false ) {
                $this->setVersion($aresult[1]);
            }
            else {
                $aversion = explode("/",$this->_agent);
                $this->setVersion($aversion[1]);
            }
            return true;
        }
        return false;
    }

    /**
     * Determine if the browser is Opera or not (last updated 1.7)
     * @return boolean True if the browser is Opera otherwise false
     */
    protected function checkBrowserOpera() {
        if( stripos($this->_agent,"opera mini") !== false ) {
            $resultant = stristr($this->_agent, "opera mini");
            if( preg_match("/\//",$resultant) ) {
                $aresult = explode("/",$resultant);
                $aversion = explode(" ",$aresult[1]);
                $this->setVersion($aversion[0]);
            }
            else {
                $aversion = explode(" ",stristr($resultant,"opera mini"));
                $this->setVersion($aversion[1]);
            }
            $this->_browser_name = self::BROWSER_OPERA_MINI;
            $this->setMobile(true);
            return true;
        }
        else if( stripos($this->_agent,"opera") !== false ) {
            $resultant = stristr($this->_agent, "opera");
            if( preg_match("/Version\/(10.*)$/",$resultant,$matches) ) {
                $this->setVersion($matches[1]);
            }
            else if( preg_match("/\//",$resultant) ) {
                $aresult = explode("/",str_replace("("," ",$resultant));
                $aversion = explode(" ",$aresult[1]);
                $this->setVersion($aversion[0]);
            }
            else {
                $aversion = explode(" ",stristr($resultant,"opera"));
                $this->setVersion(isset($aversion[1])?$aversion[1]:"");
            }
            $this->_browser_name = self::BROWSER_OPERA;
            return true;
        }
        return false;
    }

    /**
     * Determine if the browser is Chrome or not (last updated 1.7)
     * @return boolean True if the browser is Chrome otherwise false
     */
    protected function checkBrowserChrome() {
        if( stripos($this->_agent,"Chrome") !== false ) {
            $aresult = explode("/",stristr($this->_agent,"Chrome"));
            $aversion = explode(" ",$aresult[1]);
            $this->setVersion($aversion[0]);
            $this->setBrowser(self::BROWSER_CHROME);
            return true;
        }
        return false;
    }


    /**
     * Determine if the browser is WebTv or not (last updated 1.7)
     * @return boolean True if the browser is WebTv otherwise false
     */
    protected function checkBrowserWebTv() {
        if( stripos($this->_agent,"webtv") !== false ) {
            $aresult = explode("/",stristr($this->_agent,"webtv"));
            $aversion = explode(" ",$aresult[1]);
            $this->setVersion($aversion[0]);
            $this->setBrowser(self::BROWSER_WEBTV);
            return true;
        }
        return false;
    }

    /**
     * Determine if the browser is NetPositive or not (last updated 1.7)
     * @return boolean True if the browser is NetPositive otherwise false
     */
    protected function checkBrowserNetPositive() {
        if( stripos($this->_agent,"NetPositive") !== false ) {
            $aresult = explode("/",stristr($this->_agent,"NetPositive"));
            $aversion = explode(" ",$aresult[1]);
            $this->setVersion(str_replace(array("(",")",";"),"",$aversion[0]));
            $this->setBrowser(self::BROWSER_NETPOSITIVE);
            return true;
        }
        return false;
    }

    /**
     * Determine if the browser is Galeon or not (last updated 1.7)
     * @return boolean True if the browser is Galeon otherwise false
     */
    protected function checkBrowserGaleon() {
        if( stripos($this->_agent,"galeon") !== false ) {
            $aresult = explode(" ",stristr($this->_agent,"galeon"));
            $aversion = explode("/",$aresult[0]);
            $this->setVersion($aversion[1]);
            $this->setBrowser(self::BROWSER_GALEON);
            return true;
        }
        return false;
    }

    /**
     * Determine if the browser is Konqueror or not (last updated 1.7)
     * @return boolean True if the browser is Konqueror otherwise false
     */
    protected function checkBrowserKonqueror() {
        if( stripos($this->_agent,"Konqueror") !== false ) {
            $aresult = explode(" ",stristr($this->_agent,"Konqueror"));
            $aversion = explode("/",$aresult[0]);
            $this->setVersion($aversion[1]);
            $this->setBrowser(self::BROWSER_KONQUEROR);
            return true;
        }
        return false;
    }

    /**
     * Determine if the browser is iCab or not (last updated 1.7)
     * @return boolean True if the browser is iCab otherwise false
     */
    protected function checkBrowserIcab() {
        if( stripos($this->_agent,"icab") !== false ) {
            $aversion = explode(" ",stristr(str_replace("/"," ",$this->_agent),"icab"));
            $this->setVersion($aversion[1]);
            $this->setBrowser(self::BROWSER_ICAB);
            return true;
        }
        return false;
    }

    /**
     * Determine if the browser is OmniWeb or not (last updated 1.7)
     * @return boolean True if the browser is OmniWeb otherwise false
     */
    protected function checkBrowserOmniWeb() {
        if( stripos($this->_agent,"omniweb") !== false ) {
            $aresult = explode("/",stristr($this->_agent,"omniweb"));
            $aversion = explode(" ",isset($aresult[1])?$aresult[1]:"");
            $this->setVersion($aversion[0]);
            $this->setBrowser(self::BROWSER_OMNIWEB);
            return true;
        }
        return false;
    }

    /**
     * Determine if the browser is Phoenix or not (last updated 1.7)
     * @return boolean True if the browser is Phoenix otherwise false
     */
    protected function checkBrowserPhoenix() {
        if( stripos($this->_agent,"Phoenix") !== false ) {
            $aversion = explode("/",stristr($this->_agent,"Phoenix"));
            $this->setVersion($aversion[1]);
            $this->setBrowser(self::BROWSER_PHOENIX);
            return true;
        }
        return false;
    }

    /**
     * Determine if the browser is Firebird or not (last updated 1.7)
     * @return boolean True if the browser is Firebird otherwise false
     */
    protected function checkBrowserFirebird() {
        if( stripos($this->_agent,"Firebird") !== false ) {
            $aversion = explode("/",stristr($this->_agent,"Firebird"));
            $this->setVersion($aversion[1]);
            $this->setBrowser(self::BROWSER_FIREBIRD);
            return true;
        }
        return false;
    }

    /**
     * Determine if the browser is Netscape Navigator 9+ or not (last updated 1.7)
     * NOTE: (http://browser.netscape.com/ - Official support ended on March 1st, 2008)
     * @return boolean True if the browser is Netscape Navigator 9+ otherwise false
     */
    protected function checkBrowserNetscapeNavigator9Plus() {
        if( stripos($this->_agent,"Firefox") !== false && preg_match("/Navigator\/([^ ]*)/i",$this->_agent,$matches) ) {
            $this->setVersion($matches[1]);
            $this->setBrowser(self::BROWSER_NETSCAPE_NAVIGATOR);
            return true;
        }
        else if( stripos($this->_agent,"Firefox") === false && preg_match("/Netscape6?\/([^ ]*)/i",$this->_agent,$matches) ) {
            $this->setVersion($matches[1]);
            $this->setBrowser(self::BROWSER_NETSCAPE_NAVIGATOR);
            return true;
        }
        return false;
    }

    /**
     * Determine if the browser is Shiretoko or not (https://wiki.mozilla.org/Projects/shiretoko) (last updated 1.7)
     * @return boolean True if the browser is Shiretoko otherwise false
     */
    protected function checkBrowserShiretoko() {
        if( stripos($this->_agent,"Mozilla") !== false && preg_match("/Shiretoko\/([^ ]*)/i",$this->_agent,$matches) ) {
            $this->setVersion($matches[1]);
            $this->setBrowser(self::BROWSER_SHIRETOKO);
            return true;
        }
        return false;
    }

    /**
     * Determine if the browser is Ice Cat or not (http://en.wikipedia.org/wiki/GNU_IceCat) (last updated 1.7)
     * @return boolean True if the browser is Ice Cat otherwise false
     */
    protected function checkBrowserIceCat() {
        if( stripos($this->_agent,"Mozilla") !== false && preg_match("/IceCat\/([^ ]*)/i",$this->_agent,$matches) ) {
            $this->setVersion($matches[1]);
            $this->setBrowser(self::BROWSER_ICECAT);
            return true;
        }
        return false;
    }

    /**
     * Determine if the browser is Nokia or not (last updated 1.7)
     * @return boolean True if the browser is Nokia otherwise false
     */
    protected function checkBrowserNokia() {
        if( preg_match("/Nokia([^\/]+)\/([^ SP]+)/i",$this->_agent,$matches) ) {
            $this->setVersion($matches[2]);
            if( stripos($this->_agent,"Series60") !== false || strpos($this->_agent,"S60") !== false ) {
                $this->setBrowser(self::BROWSER_NOKIA_S60);
            }
            else {
                $this->setBrowser( self::BROWSER_NOKIA );
            }
            $this->setMobile(true);
            return true;
        }
        return false;
    }

    /**
     * Determine if the browser is Firefox or not (last updated 1.7)
     * @return boolean True if the browser is Firefox otherwise false
     */
    protected function checkBrowserFirefox() {
        if( stripos($this->_agent,"safari") === false ) {
            if( preg_match("/Firefox[\/ \(]([^ ;\)]+)/i",$this->_agent,$matches) ) {
                $this->setVersion($matches[1]);
                $this->setBrowser(self::BROWSER_FIREFOX);
                return true;
            }
            else if( preg_match("/Firefox$/i",$this->_agent,$matches) ) {
                $this->setVersion("");
                $this->setBrowser(self::BROWSER_FIREFOX);
                return true;
            }
        }
        return false;
    }

    /**
     * Determine if the browser is Firefox or not (last updated 1.7)
     * @return boolean True if the browser is Firefox otherwise false
     */
    protected function checkBrowserIceweasel() {
        if( stripos($this->_agent,"Iceweasel") !== false ) {
            $aresult = explode("/",stristr($this->_agent,"Iceweasel"));
            $aversion = explode(" ",$aresult[1]);
            $this->setVersion($aversion[0]);
            $this->setBrowser(self::BROWSER_ICEWEASEL);
            return true;
        }
        return false;
    }
    /**
     * Determine if the browser is Mozilla or not (last updated 1.7)
     * @return boolean True if the browser is Mozilla otherwise false
     */
    protected function checkBrowserMozilla() {
        if( stripos($this->_agent,"mozilla") !== false  && preg_match("/rv:[0-9].[0-9][a-b]?/i",$this->_agent) && stripos($this->_agent,"netscape") === false) {
            $aversion = explode(" ",stristr($this->_agent,"rv:"));
            preg_match("/rv:[0-9].[0-9][a-b]?/i",$this->_agent,$aversion);
            $this->setVersion(str_replace("rv:","",$aversion[0]));
            $this->setBrowser(self::BROWSER_MOZILLA);
            return true;
        }
        else if( stripos($this->_agent,"mozilla") !== false && preg_match("/rv:[0-9]\.[0-9]/i",$this->_agent) && stripos($this->_agent,"netscape") === false ) {
            $aversion = explode("",stristr($this->_agent,"rv:"));
            $this->setVersion(str_replace("rv:","",$aversion[0]));
            $this->setBrowser(self::BROWSER_MOZILLA);
            return true;
        }
        else if( stripos($this->_agent,"mozilla") !== false  && preg_match("/mozilla\/([^ ]*)/i",$this->_agent,$matches) && stripos($this->_agent,"netscape") === false ) {
            $this->setVersion($matches[1]);
            $this->setBrowser(self::BROWSER_MOZILLA);
            return true;
        }
        return false;
    }

    /**
     * Determine if the browser is Lynx or not (last updated 1.7)
     * @return boolean True if the browser is Lynx otherwise false
     */
    protected function checkBrowserLynx() {
        if( stripos($this->_agent,"lynx") !== false ) {
            $aresult = explode("/",stristr($this->_agent,"Lynx"));
            $aversion = explode(" ",(isset($aresult[1])?$aresult[1]:""));
            $this->setVersion($aversion[0]);
            $this->setBrowser(self::BROWSER_LYNX);
            return true;
        }
        return false;
    }

    /**
     * Determine if the browser is Amaya or not (last updated 1.7)
     * @return boolean True if the browser is Amaya otherwise false
     */
    protected function checkBrowserAmaya() {
        if( stripos($this->_agent,"amaya") !== false ) {
            $aresult = explode("/",stristr($this->_agent,"Amaya"));
            $aversion = explode(" ",$aresult[1]);
            $this->setVersion($aversion[0]);
            $this->setBrowser(self::BROWSER_AMAYA);
            return true;
        }
        return false;
    }

    /**
     * Determine if the browser is Safari or not (last updated 1.7)
     * @return boolean True if the browser is Safari otherwise false
     */
    protected function checkBrowserSafari() {
        if( stripos($this->_agent,"Safari") !== false && stripos($this->_agent,"iPhone") === false && stripos($this->_agent,"iPod") === false ) {
            $aresult = explode("/",stristr($this->_agent,"Version"));
            if( isset($aresult[1]) ) {
                $aversion = explode(" ",$aresult[1]);
                $this->setVersion($aversion[0]);
            }
            else {
                $this->setVersion(self::VERSION_UNKNOWN);
            }
            $this->setBrowser(self::BROWSER_SAFARI);
            return true;
        }
        return false;
    }

    /**
     * Determine if the browser is iPhone or not (last updated 1.7)
     * @return boolean True if the browser is iPhone otherwise false
     */
    protected function checkBrowseriPhone() {
        if( stripos($this->_agent,"iPhone") !== false ) {
            $aresult = explode("/",stristr($this->_agent,"Version"));
            if( isset($aresult[1]) ) {
                $aversion = explode(" ",$aresult[1]);
                $this->setVersion($aversion[0]);
            }
            else {
                $this->setVersion(self::VERSION_UNKNOWN);
            }
            $this->setMobile(true);
            $this->setBrowser(self::BROWSER_IPHONE);
            return true;
        }
        return false;
    }

    /**
     * Determine if the browser is iPod or not (last updated 1.7)
     * @return boolean True if the browser is iPod otherwise false
     */
    protected function checkBrowseriPad() {
        if( stripos($this->_agent,"iPad") !== false ) {
            $aresult = explode("/",stristr($this->_agent,"Version"));
            if( isset($aresult[1]) ) {
                $aversion = explode(" ",$aresult[1]);
                $this->setVersion($aversion[0]);
            }
            else {
                $this->setVersion(self::VERSION_UNKNOWN);
            }
            $this->setMobile(true);
            $this->setBrowser(self::BROWSER_IPAD);
            return true;
        }
        return false;
    }

    /**
     * Determine if the browser is iPod or not (last updated 1.7)
     * @return boolean True if the browser is iPod otherwise false
     */
    protected function checkBrowseriPod() {
        if( stripos($this->_agent,"iPod") !== false ) {
            $aresult = explode("/",stristr($this->_agent,"Version"));
            if( isset($aresult[1]) ) {
                $aversion = explode(" ",$aresult[1]);
                $this->setVersion($aversion[0]);
            }
            else {
                $this->setVersion(self::VERSION_UNKNOWN);
            }
            $this->setMobile(true);
            $this->setBrowser(self::BROWSER_IPOD);
            return true;
        }
        return false;
    }

    /**
     * Determine if the browser is Android or not (last updated 1.7)
     * @return boolean True if the browser is Android otherwise false
     */
    protected function checkBrowserAndroid() {
        if( stripos($this->_agent,"Android") !== false ) {
            $aresult = explode(" ",stristr($this->_agent,"Android"));
            if( isset($aresult[1]) ) {
                $aversion = explode(" ",$aresult[1]);
                $this->setVersion($aversion[0]);
            }
            else {
                $this->setVersion(self::VERSION_UNKNOWN);
            }
            $this->setMobile(true);
            $this->setBrowser(self::BROWSER_ANDROID);
            return true;
        }
        return false;
    }

    /**
     * Determine the user"s platform (last updated 1.7)
     */
    protected function checkPlatform() {
        if( stripos($this->_agent, "windows") !== false ) {
            $this->_platform = self::PLATFORM_WINDOWS;
        }
        else if( stripos($this->_agent, "iPad") !== false ) {
            $this->_platform = self::PLATFORM_IPAD;
        }
        else if( stripos($this->_agent, "iPod") !== false ) {
            $this->_platform = self::PLATFORM_IPOD;
        }
        else if( stripos($this->_agent, "iPhone") !== false ) {
            $this->_platform = self::PLATFORM_IPHONE;
        }
        elseif( stripos($this->_agent, "mac") !== false ) {
            $this->_platform = self::PLATFORM_APPLE;
        }
        elseif( stripos($this->_agent, "android") !== false ) {
            $this->_platform = self::PLATFORM_ANDROID;
        }
        elseif( stripos($this->_agent, "linux") !== false ) {
            $this->_platform = self::PLATFORM_LINUX;
        }
        else if( stripos($this->_agent, "Nokia") !== false ) {
            $this->_platform = self::PLATFORM_NOKIA;
        }
        else if( stripos($this->_agent, "BlackBerry") !== false ) {
            $this->_platform = self::PLATFORM_BLACKBERRY;
        }
        elseif( stripos($this->_agent,"FreeBSD") !== false ) {
            $this->_platform = self::PLATFORM_FREEBSD;
        }
        elseif( stripos($this->_agent,"OpenBSD") !== false ) {
            $this->_platform = self::PLATFORM_OPENBSD;
        }
        elseif( stripos($this->_agent,"NetBSD") !== false ) {
            $this->_platform = self::PLATFORM_NETBSD;
        }
        elseif( stripos($this->_agent, "OpenSolaris") !== false ) {
            $this->_platform = self::PLATFORM_OPENSOLARIS;
        }
        elseif( stripos($this->_agent, "SunOS") !== false ) {
            $this->_platform = self::PLATFORM_SUNOS;
        }
        elseif( stripos($this->_agent, "OS\/2") !== false ) {
            $this->_platform = self::PLATFORM_OS2;
        }
        elseif( stripos($this->_agent, "BeOS") !== false ) {
            $this->_platform = self::PLATFORM_BEOS;
        }
        elseif( stripos($this->_agent, "win") !== false ) {
            $this->_platform = self::PLATFORM_WINDOWS;
        }
    }
}