/code/wright/includes/browser.php

<?php



/**

 * 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;

		}

	}



}