<?php
	/**
	 * Browser detection class
	 *
	 * @author      Original Author: Chris Schuld (http://chrisschuld.com/)
	 * @author      Modifications for EDD: Chris Christoff
	 * @version     1.9
	 *              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/
	 *              Based on original work from Gary White (http://apptools.com/phptools/browser/
	 *              CHANGELOG:
	 *              2012-12-26 (v1.9c by Chris Christoff):
	 *              + Changed vars to publics
	 *              2012-12-23 (v1.9b by Chris Christoff):
	 *              + Removed the browser string return and added spacing.
	 *              + Also removed return HTML formatting.
	 *              2012-12-23 (v1.9a by Chris Christoff):
	 *              + Split user string and add formatting so we can print a nicely
	 *              formatted user agent string
	 *              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)
	 */


	// Exit if accessed directly
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

if ( ! class_exists( 'Browser' ) ) {

	/**
	 * Browser detection class
	 *
	 * @author      Chris Schuld
	 * @since       1.0
	 */
	class Browser {
		public $_agent = '';
		public $_browser_name = '';
		public $_version = '';
		public $_platform = '';
		public $_os = '';
		public $_is_aol = false;
		public $_is_mobile = false;
		public $_is_robot = false;
		public $_aol_version = '';

		public $BROWSER_UNKNOWN = 'unknown';
		public $VERSION_UNKNOWN = 'unknown';

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

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

		public $OPERATING_SYSTEM_UNKNOWN = 'unknown';

		function __construct( $useragent = '' ) {
			$this->reset();

			if ( $useragent != '' ) {
				$this->setUserAgent( $useragent );
			} else {
				$this->determine();
			}
		}

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

		/**
		 * Set the name of the browser
		 *
		 * @param $browser The name of the Browser
		 */
		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
		 */
		function getPlatform() {
			return $this->_platform;
		}

		/**
		 * Set the name of the platform
		 *
		 * @param $platform The name of the Platform
		 */
		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)
		 */
		function getVersion() {
			return $this->_version;
		}

		/**
		 * Set the version of the browser
		 *
		 * @param $version The version of the Browser
		 */
		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)
		 */
		function getAolVersion() {
			return $this->_aol_version;
		}

		/**
		 * Set the version of AOL
		 *
		 * @param $version The version of AOL
		 */
		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
		 */
		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
		 */
		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
		 */
		function isRobot() {
			return $this->_is_robot;
		}

		/**
		 * Set the browser to be from AOL
		 *
		 * @param $isAol
		 */
		function setAol( $isAol ) {
			$this->_is_aol = $isAol;
		}

		/**
		 * Set the Browser to be mobile
		 *
		 * @param boolean $value is the browser a mobile brower or not
		 */
		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
		 */
		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
		 */
		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
		 */
		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
		 */
		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
		 */
		function __toString() {
			$text1    = $this->getUserAgent(); // Grabs the UA string
			$UAline1  = substr( $text1, 0, 32 ); // The first line we print should only be the first 32 characters of the UA string
			$text2    = $this->getUserAgent(); // Now we grab it again and save it to a string
			$towrapUA = str_replace( $UAline1, '', $text2 ); // The rest of the printoff (other than first line) is equivalent
			// to the whole string minus the part we printed off. IE
			// User Agent:      thefirst32charactersfromUAline1
			// the rest of it is now stored in
			// $text2 to be printed off
			// But we need to add spaces before each line that is split other than line 1
			$space = '';
			for ( $i = 0; $i < 25; $i ++ ) {
				$space .= ' ';
			}

			// Now we split the remaining string of UA ($text2) into lines that are prefixed by spaces for formatting
			$wordwrapped = chunk_split( $towrapUA, 32, "\n $space" );

			return "Platform:                 {$this->getPlatform()} \n" .
				   "Browser Name:             {$this->getBrowser()}  \n" .
				   "Browser Version:          {$this->getVersion()} \n" .
				   "User Agent String:        $UAline1 \n\t\t\t  " .
				   "$wordwrapped";
		}

		/**
		 * Protected routine to calculate and determine what the browser is in use (including platform)
		 */
		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
		 */
		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
		 */
		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 = $this->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
		 */
		function checkForAol() {
			$this->setAol( false );
			$this->setAolVersion( $this->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
		 */
		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 = $this->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
		 */
		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 = $this->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
		 */
		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 = $this->BROWSER_W3CVALIDATOR;

				return true;
			} elseif ( 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 = $this->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
		 */
		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 = $this->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
		 */
		function checkBrowserInternetExplorer() {

			// Test for v1 - v1.5 IE
			if ( stripos( $this->_agent, 'microsoft internet explorer' ) !== false ) {
				$this->setBrowser( $this->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
			} elseif ( 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( $this->BROWSER_MSN );
					$this->setVersion( str_replace( array( '(', ')', ';' ), '', $aresult[1] ) );

					return true;
				}
				$aresult = explode( ' ', stristr( str_replace( ';', '; ', $this->_agent ), 'msie' ) );
				$this->setBrowser( $this->BROWSER_IE );
				$this->setVersion( str_replace( array( '(', ')', ';' ), '', $aresult[1] ) );

				return true;
				// Test for Pocket IE
			} elseif ( stripos( $this->_agent, 'mspie' ) !== false || stripos( $this->_agent, 'pocket' ) !== false ) {
				$aresult = explode( ' ', stristr( $this->_agent, 'mspie' ) );
				$this->setPlatform( $this->PLATFORM_WINDOWS_CE );
				$this->setBrowser( $this->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;
			}// End if().

			return false;
		}

		/**
		 * Determine if the browser is Opera or not (last updated 1.7)
		 *
		 * @return boolean True if the browser is Opera otherwise false
		 */
		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 = $this->BROWSER_OPERA_MINI;
				$this->setMobile( true );

				return true;
			} elseif ( stripos( $this->_agent, 'opera' ) !== false ) {
				$resultant = stristr( $this->_agent, 'opera' );
				if ( preg_match( '/Version\/(10.*)$/', $resultant, $matches ) ) {
					$this->setVersion( $matches[1] );
				} elseif ( 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 = $this->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
		 */
		function checkBrowserChrome() {
			if ( stripos( $this->_agent, 'Chrome' ) !== false ) {
				$aresult  = explode( '/', stristr( $this->_agent, 'Chrome' ) );
				$aversion = explode( ' ', $aresult[1] );
				$this->setVersion( $aversion[0] );
				$this->setBrowser( $this->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
		 */
		function checkBrowserWebTv() {
			if ( stripos( $this->_agent, 'webtv' ) !== false ) {
				$aresult  = explode( '/', stristr( $this->_agent, 'webtv' ) );
				$aversion = explode( ' ', $aresult[1] );
				$this->setVersion( $aversion[0] );
				$this->setBrowser( $this->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
		 */
		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( $this->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
		 */
		function checkBrowserGaleon() {
			if ( stripos( $this->_agent, 'galeon' ) !== false ) {
				$aresult  = explode( ' ', stristr( $this->_agent, 'galeon' ) );
				$aversion = explode( '/', $aresult[0] );
				$this->setVersion( $aversion[1] );
				$this->setBrowser( $this->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
		 */
		function checkBrowserKonqueror() {
			if ( stripos( $this->_agent, 'Konqueror' ) !== false ) {
				$aresult  = explode( ' ', stristr( $this->_agent, 'Konqueror' ) );
				$aversion = explode( '/', $aresult[0] );
				$this->setVersion( $aversion[1] );
				$this->setBrowser( $this->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
		 */
		function checkBrowserIcab() {
			if ( stripos( $this->_agent, 'icab' ) !== false ) {
				$aversion = explode( ' ', stristr( str_replace( '/', ' ', $this->_agent ), 'icab' ) );
				$this->setVersion( $aversion[1] );
				$this->setBrowser( $this->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
		 */
		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( $this->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
		 */
		function checkBrowserPhoenix() {
			if ( stripos( $this->_agent, 'Phoenix' ) !== false ) {
				$aversion = explode( '/', stristr( $this->_agent, 'Phoenix' ) );
				$this->setVersion( $aversion[1] );
				$this->setBrowser( $this->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
		 */
		function checkBrowserFirebird() {
			if ( stripos( $this->_agent, 'Firebird' ) !== false ) {
				$aversion = explode( '/', stristr( $this->_agent, 'Firebird' ) );
				$this->setVersion( $aversion[1] );
				$this->setBrowser( $this->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
		 */
		function checkBrowserNetscapeNavigator9Plus() {
			if ( stripos( $this->_agent, 'Firefox' ) !== false && preg_match( '/Navigator\/([^ ]*)/i', $this->_agent, $matches ) ) {
				$this->setVersion( $matches[1] );
				$this->setBrowser( $this->BROWSER_NETSCAPE_NAVIGATOR );

				return true;
			} elseif ( stripos( $this->_agent, 'Firefox' ) === false && preg_match( '/Netscape6?\/([^ ]*)/i', $this->_agent, $matches ) ) {
				$this->setVersion( $matches[1] );
				$this->setBrowser( $this->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
		 */
		function checkBrowserShiretoko() {
			if ( stripos( $this->_agent, 'Mozilla' ) !== false && preg_match( '/Shiretoko\/([^ ]*)/i', $this->_agent, $matches ) ) {
				$this->setVersion( $matches[1] );
				$this->setBrowser( $this->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
		 */
		function checkBrowserIceCat() {
			if ( stripos( $this->_agent, 'Mozilla' ) !== false && preg_match( '/IceCat\/([^ ]*)/i', $this->_agent, $matches ) ) {
				$this->setVersion( $matches[1] );
				$this->setBrowser( $this->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
		 */
		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( $this->BROWSER_NOKIA_S60 );
				} else {
					$this->setBrowser( $this->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
		 */
		function checkBrowserFirefox() {
			if ( stripos( $this->_agent, 'safari' ) === false ) {
				if ( preg_match( '/Firefox[\/ \(]([^ ;\)]+)/i', $this->_agent, $matches ) ) {
					$this->setVersion( $matches[1] );
					$this->setBrowser( $this->BROWSER_FIREFOX );

					return true;
				} elseif ( preg_match( '/Firefox$/i', $this->_agent, $matches ) ) {
					$this->setVersion( '' );
					$this->setBrowser( $this->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
		 */
		function checkBrowserIceweasel() {
			if ( stripos( $this->_agent, 'Iceweasel' ) !== false ) {
				$aresult  = explode( '/', stristr( $this->_agent, 'Iceweasel' ) );
				$aversion = explode( ' ', $aresult[1] );
				$this->setVersion( $aversion[0] );
				$this->setBrowser( $this->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
		 */
		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( $this->BROWSER_MOZILLA );

				return true;
			} elseif ( 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( $this->BROWSER_MOZILLA );

				return true;
			} elseif ( stripos( $this->_agent, 'mozilla' ) !== false && preg_match( '/mozilla\/([^ ]*)/i', $this->_agent, $matches ) && stripos( $this->_agent, 'netscape' ) === false ) {
				$this->setVersion( $matches[1] );
				$this->setBrowser( $this->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
		 */
		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( $this->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
		 */
		function checkBrowserAmaya() {
			if ( stripos( $this->_agent, 'amaya' ) !== false ) {
				$aresult  = explode( '/', stristr( $this->_agent, 'Amaya' ) );
				$aversion = explode( ' ', $aresult[1] );
				$this->setVersion( $aversion[0] );
				$this->setBrowser( $this->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
		 */
		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( $this->VERSION_UNKNOWN );
				}
				$this->setBrowser( $this->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
		 */
		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( $this->VERSION_UNKNOWN );
				}
				$this->setMobile( true );
				$this->setBrowser( $this->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
		 */
		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( $this->VERSION_UNKNOWN );
				}
				$this->setMobile( true );
				$this->setBrowser( $this->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
		 */
		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( $this->VERSION_UNKNOWN );
				}
				$this->setMobile( true );
				$this->setBrowser( $this->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
		 */
		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( $this->VERSION_UNKNOWN );
				}
				$this->setMobile( true );
				$this->setBrowser( $this->BROWSER_ANDROID );

				return true;
			}

			return false;
		}

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