تشخیص براوزر با پی اچ پی

<?php
    //  pasted for: http://www.php-jquery.ir/4376
    /**
     * File: Browser.php
     * Author: Chris Schuld (http://chrisschuld.com/)
     * Last Modified: August 20th, 2010
     * @version 1.9
     * @package PegasusPHP
     *
     * 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
     *
     *
     * Typical Usage:
     *
     *   $browser = new Browser();
     *   if( $browser->getBrowser() == Browser::BROWSER_FIREFOX && $browser->getVersion() >= 2 ) {
     *      echo 'You have FireFox version 2 or greater';
     *   }
     *
     * User Agents Sampled from: http://www.useragentstring.com/
     *
     * This implementation is based on the original work from Gary White
     * http://apptools.com/phptools/browser/
     *
     * UPDATES:
     *
     * 2010-08-20 (v1.9):
     *  + Added MSN Explorer Browser (legacy)
     *  + Added Bing/MSN Robot (Thanks Rob MacDonald)
     *  + Added the Android Platform (PLATFORM_ANDROID)
     *  + Fixed issue with Android 1.6/2.2 (Thanks Tom Hirashima)
     *
     * 2010-04-27 (v1.8):
     *  + Added iPad Support
     *
     * 2010-03-07 (v1.7):
     *  + *MAJOR* Rebuild (preg_match and other "slow" routine removal(s))
     *  + Almost allof Gary's original code has been replaced
     *  + Large PHPUNIT testing environment created to validate new releases and additions
     *  + Added FreeBSD Platform
     *  + Added OpenBSD Platform
     *  + Added NetBSD Platform
     *  + Added SunOS Platform
     *  + Added OpenSolaris Platform
     *  + Added support of the Iceweazel Browser
     *  + Added isChromeFrame() call to check if chromeframe is in use
     *  + Moved the Opera check in front of the Firefox check due to legacy Opera User Agents
     *  + Added the __toString() method (Thanks Deano)
     *
     * 2009-11-15:
     *  + Updated the checkes for Firefox
     *  + Added the NOKIA platform
     *  + Added Checks for the NOKIA brower(s)
     *
     * 2009-11-08:
     *  + PHP 5.3 Support
     *  + Added support for BlackBerry OS and BlackBerry browser
     *  + Added support for the Opera Mini browser
     *  + Added additional documenation
     *  + Added support for isRobot() and isMobile()
     *  + Added support for Opera version 10
     *  + Added support for deprecated Netscape Navigator version 9
     *  + Added support for IceCat
     *  + Added support for Shiretoko
     *
     * 2010-04-27 (v1.8):
     *  + Added iPad Support
     *
     * 2009-08-18:
     *  + Updated to support PHP 5.3 - removed all deprecated function calls
     *  + Updated to remove all double quotes (") -- converted to single quotes (')
     *
     * 2009-04-27:
     *  + Updated the IE check to remove a typo and bug (thanks John)
     *
     * 2009-04-22:
     *  + Added detection for GoogleBot
     *  + Added detection for the W3C Validator.
     *  + Added detection for Yahoo! Slurp
     *
     * 2009-03-14:
     *  + Added detection for iPods.
     *  + Added Platform detection for iPhones
     *  + Added Platform detection for iPods
     *
     * 2009-02-16: (Rick Hale)
     *  + Added version detection for Android phones.
     *
     * 2008-12-09:
     *  + Removed unused constant
     *
     * 2008-11-07:
     *  + Added Google's Chrome to the detection list
     *  + Added isBrowser(string) to the list of functions special thanks to
     *    Daniel 'mavrick' Lang for the function concept (http://mavrick.id.au)
     *
     *
     * Gary White noted: "Since browser detection is so unreliable, I am
     * no longer maintaining this script. You are free to use and or
     * modify/update it as you want, however the author assumes no
     * responsibility for the accuracy of the detected values."
     *
     * Anyone experienced with Gary's script might be interested in these notes:
     *
     *   Added class constants
     *   Added detection and version detection for Google's Chrome
     *   Updated the version detection for Amaya
     *   Updated the version detection for Firefox
     *   Updated the version detection for Lynx
     *   Updated the version detection for WebTV
     *   Updated the version detection for NetPositive
     *   Updated the version detection for IE
     *   Updated the version detection for OmniWeb
     *   Updated the version detection for iCab
     *   Updated the version detection for Safari
     *   Updated Safari to remove mobile devices (iPhone)
     *   Added detection for iPhone
     *   Added detection for robots
     *   Added detection for mobile devices
     *   Added detection for BlackBerry
     *   Removed Netscape checks (matches heavily with firefox & mozilla)
     *
     */

    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 = '';

        const BROWSER_UNKNOWN = 'unknown';
        const VERSION_UNKNOWN = 'unknown';

        const BROWSER_OPERA = 'Opera';                            // http://www.opera.com/
        const BROWSER_OPERA_MINI = 'Opera Mini';                  // http://www.opera.com/mini/
        const BROWSER_WEBTV = 'WebTV';                            // http://www.webtv.net/pc/
        const BROWSER_IE = 'Internet Explorer';                   // http://www.microsoft.com/ie/
        const BROWSER_POCKET_IE = 'Pocket Internet Explorer';     // http://en.wikipedia.org/wiki/Internet_Explorer_Mobile
        const BROWSER_KONQUEROR = 'Konqueror';                    // http://www.konqueror.org/
        const BROWSER_ICAB = 'iCab';                              // http://www.icab.de/
        const BROWSER_OMNIWEB = 'OmniWeb';                        // http://www.omnigroup.com/applications/omniweb/
        const BROWSER_FIREBIRD = 'Firebird';                      // http://www.ibphoenix.com/
        const BROWSER_FIREFOX = 'Firefox';                        // http://www.mozilla.com/en-US/firefox/firefox.html
        const BROWSER_ICEWEASEL = 'Iceweasel';                    // http://www.geticeweasel.org/
        const BROWSER_SHIRETOKO = 'Shiretoko';                    // http://wiki.mozilla.org/Projects/shiretoko
        const BROWSER_MOZILLA = 'Mozilla';                        // http://www.mozilla.com/en-US/
        const BROWSER_AMAYA = 'Amaya';                            // http://www.w3.org/Amaya/
        const BROWSER_LYNX = 'Lynx';                              // http://en.wikipedia.org/wiki/Lynx
        const BROWSER_SAFARI = 'Safari';                          // http://apple.com
        const BROWSER_IPHONE = 'iPhone';                          // http://apple.com
        const BROWSER_IPOD = 'iPod';                              // http://apple.com
        const BROWSER_IPAD = 'iPad';                              // http://apple.com
        const BROWSER_CHROME = 'Chrome';                          // http://www.google.com/chrome
        const BROWSER_ANDROID = 'Android';                        // http://www.android.com/
        const BROWSER_GOOGLEBOT = 'GoogleBot';                    // http://en.wikipedia.org/wiki/Googlebot
        const BROWSER_SLURP = 'Yahoo! Slurp';                     // http://en.wikipedia.org/wiki/Yahoo!_Slurp
        const BROWSER_W3CVALIDATOR = 'W3C Validator';             // http://validator.w3.org/
        const BROWSER_BLACKBERRY = 'BlackBerry';                  // http://www.blackberry.com/
        const BROWSER_ICECAT = 'IceCat';                          // http://en.wikipedia.org/wiki/GNU_IceCat
        const BROWSER_NOKIA_S60 = 'Nokia S60 OSS Browser';        // http://en.wikipedia.org/wiki/Web_Browser_for_S60
        const BROWSER_NOKIA = 'Nokia Browser';                    // * all other WAP-based browsers on the Nokia Platform
        const BROWSER_MSN = 'MSN Browser';                        // http://explorer.msn.com/
        const BROWSER_MSNBOT = 'MSN Bot';                         // http://search.msn.com/msnbot.htm
                                                                  // http://en.wikipedia.org/wiki/Msnbot  (used for Bing as well)

        const BROWSER_NETSCAPE_NAVIGATOR = 'Netscape Navigator';  // http://browser.netscape.com/ (DEPRECATED)
        const BROWSER_GALEON = 'Galeon';                          // http://galeon.sourceforge.net/ (DEPRECATED)
        const BROWSER_NETPOSITIVE = 'NetPositive';                // http://en.wikipedia.org/wiki/NetPositive (DEPRECATED)
        const BROWSER_PHOENIX = 'Phoenix';                        // http://en.wikipedia.org/wiki/History_of_Mozilla_Firefox (DEPRECATED)

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

        const OPERATING_SYSTEM_UNKNOWN = 'unknown';

        public function Browser($useragent="") {
            $this->reset();
            if( $useragent != "" ) {
                $this->setUserAgent($useragent);
            }
            else {
                $this->determine();
            }
        }

        /**
        * Reset all properties
        */
        public function reset() {
            $this->_agent = isset($_SERVER['HTTP_USER_AGENT']) ? $_SERVER['HTTP_USER_AGENT'] : "";
            $this->_browser_name = self::BROWSER_UNKNOWN;
            $this->_version = self::VERSION_UNKNOWN;
            $this->_platform = self::PLATFORM_UNKNOWN;
            $this->_os = self::OPERATING_SYSTEM_UNKNOWN;
            $this->_is_aol = false;
            $this->_is_mobile = false;
            $this->_is_robot = false;
            $this->_aol_version = self::VERSION_UNKNOWN;
        }

        /**
        * 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 $agent_string The value for the User Agent
        */
        public function setUserAgent($agent_string) {
            $this->reset();
            $this->_agent = $agent_string;
            $this->determine();
        }
        /**
         * Used to determine if the browser is actually "chromeframe"
         * @since 1.7
         * @return boolean True if the browser is using chromeframe
         */
        public function isChromeFrame() {
            return( strpos($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;
            }

        }
    }
?>