<?php
// @codingStandardsIgnoreStart-- This is a library so phpcs is ignored here.

/**
 * File: Browser.php
 * Author: Chris Schuld (http://chrisschuld.com/)
 * Last Modified: April 14th, 2020
 *
 * @version 1.9.6
 *
 * Copyright 2019 Chris Schuld
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without
 * limitation the rights to use, copy, modify, merge, publish, distribute,
 * sublicense, and/or sell copies of the Software, and to permit persons to
 * whom the Software is furnished to do so, subject to the following
 * conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * 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/
 */

namespace SRFM\Inc\Lib\Browser;

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

class Browser {

	private $_agent        = '';
	private $_browser_name = '';
	private $_version      = '';
	private $_platform     = '';
	private $_os           = '';
	private $_is_aol       = false;
	private $_is_mobile    = false;
	private $_is_tablet    = false;
	private $_is_robot     = false;
	private $_is_facebook  = 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_EDGE       = 'Edge'; // https://www.microsoft.com/edge
	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'; // https://www.mozilla.org/en-US/firefox/
	const BROWSER_BRAVE      = 'Brave'; // https://brave.com/
	const BROWSER_PALEMOON   = 'Palemoon'; // https://www.palemoon.org/
	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_CURL       = 'cURL'; // https://en.wikipedia.org/wiki/CURL
	const BROWSER_WGET       = 'Wget'; // https://en.wikipedia.org/wiki/Wget
	const BROWSER_UCBROWSER  = 'UCBrowser'; // https://www.ucweb.com/


	const BROWSER_YANDEXBOT              = 'YandexBot'; // http://yandex.com/bots
	const BROWSER_YANDEXIMAGERESIZER_BOT = 'YandexImageResizer'; // http://yandex.com/bots
	const BROWSER_YANDEXIMAGES_BOT       = 'YandexImages'; // http://yandex.com/bots
	const BROWSER_YANDEXVIDEO_BOT        = 'YandexVideo'; // http://yandex.com/bots
	const BROWSER_YANDEXMEDIA_BOT        = 'YandexMedia'; // http://yandex.com/bots
	const BROWSER_YANDEXBLOGS_BOT        = 'YandexBlogs'; // http://yandex.com/bots
	const BROWSER_YANDEXFAVICONS_BOT     = 'YandexFavicons'; // http://yandex.com/bots
	const BROWSER_YANDEXWEBMASTER_BOT    = 'YandexWebmaster'; // http://yandex.com/bots
	const BROWSER_YANDEXDIRECT_BOT       = 'YandexDirect'; // http://yandex.com/bots
	const BROWSER_YANDEXMETRIKA_BOT      = 'YandexMetrika'; // http://yandex.com/bots
	const BROWSER_YANDEXNEWS_BOT         = 'YandexNews'; // http://yandex.com/bots
	const BROWSER_YANDEXCATALOG_BOT      = 'YandexCatalog'; // http://yandex.com/bots

	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
	const BROWSER_BINGBOT      = 'Bing Bot'; // http://en.wikipedia.org/wiki/Bingbot
	const BROWSER_VIVALDI      = 'Vivaldi'; // https://vivaldi.com/
	const BROWSER_YANDEX       = 'Yandex'; // https://browser.yandex.ua/

	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 BROWSER_PLAYSTATION        = 'PlayStation';
	const BROWSER_SAMSUNG            = 'SamsungBrowser';
	const BROWSER_SILK               = 'Silk';
	const BROWSER_I_FRAME            = 'Iframely';
	const BROWSER_COCOA              = 'CocoaRestClient';

	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 PLATFORM_PLAYSTATION  = 'Sony PlayStation';
	const PLATFORM_ROKU         = 'Roku';
	const PLATFORM_APPLE_TV     = 'Apple TV';
	const PLATFORM_TERMINAL     = 'Terminal';
	const PLATFORM_FIRE_OS      = 'Fire OS';
	const PLATFORM_SMART_TV     = 'SMART-TV';
	const PLATFORM_CHROME_OS    = 'Chrome OS';
	const PLATFORM_JAVA_ANDROID = 'Java/Android';
	const PLATFORM_POSTMAN      = 'Postman';
	const PLATFORM_I_FRAME      = 'Iframely';

	const OPERATING_SYSTEM_UNKNOWN = 'unknown';

	/**
	 * Class constructor
	 *
	 * @param string $userAgent
	 */
	public function __construct( $userAgent = '' ) {
		if ( $userAgent != '' ) {
			$this->setUserAgent( $userAgent );
		} else {
			$this->reset();
			$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_tablet    = false;
		$this->_is_robot     = false;
		$this->_is_facebook  = false;
		$this->_aol_version  = self::VERSION_UNKNOWN;
	}

	/**
	 * Check to see if the specific browser is valid
	 *
	 * @param string $browserName
	 * @return bool 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 string The name of the Browser
	 */
	public function setBrowser( $browser ) {
		$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 string $platform The name of the Platform
	 */
	public function setPlatform( $platform ) {
		$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 string $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 string $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 tablet device?
	 *
	 * @return boolean True if the browser is from a tablet device otherwise false
	 */
	public function isTablet() {
		return $this->_is_tablet;
	}

	/**
	 * 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;
	}

	/**
	 * Is the browser from facebook?
	 *
	 * @return boolean True if the browser is from facebook otherwise false
	 */
	public function isFacebook() {
		return $this->_is_facebook;
	}

	/**
	 * 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 browser or not
	 */
	protected function setMobile( $value = true ) {
		$this->_is_mobile = $value;
	}

	/**
	 * Set the Browser to be tablet
	 *
	 * @param boolean $value is the browser a tablet browser or not
	 */
	protected function setTablet( $value = true ) {
		$this->_is_tablet = $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;
	}

	/**
	 * Set the Browser to be a Facebook request
	 *
	 * @param boolean $value is the browser a robot or not
	 */
	protected function setFacebook( $value = true ) {
		$this->_is_facebook = $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 string $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
			// (6) Vivaldi is UA contains both Firefox and Chrome so Vivaldi checks
			// before Firefox and Chrome
			$this->checkBrowserWebTv() ||
			$this->checkBrowserBrave() ||
			$this->checkBrowserUCBrowser() ||
			$this->checkBrowserEdge() ||
			$this->checkBrowserInternetExplorer() ||
			$this->checkBrowserOpera() ||
			$this->checkBrowserGaleon() ||
			$this->checkBrowserNetscapeNavigator9Plus() ||
			$this->checkBrowserVivaldi() ||
			$this->checkBrowserYandex() ||
			$this->checkBrowserPalemoon() ||
			$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->checkBrowserBingBot() ||
			$this->checkBrowserSlurp() ||

			// Yandex bots
			$this->checkBrowserYandexBot() ||
			$this->checkBrowserYandexImageResizerBot() ||
			$this->checkBrowserYandexBlogsBot() ||
			$this->checkBrowserYandexCatalogBot() ||
			$this->checkBrowserYandexDirectBot() ||
			$this->checkBrowserYandexFaviconsBot() ||
			$this->checkBrowserYandexImagesBot() ||
			$this->checkBrowserYandexMediaBot() ||
			$this->checkBrowserYandexMetrikaBot() ||
			$this->checkBrowserYandexNewsBot() ||
			$this->checkBrowserYandexVideoBot() ||
			$this->checkBrowserYandexWebmasterBot() ||

			// check for facebook external hit when loading URL
			$this->checkFacebookExternalHit() ||

			// WebKit base check (post mobile and others)
			$this->checkBrowserSamsung() ||
			$this->checkBrowserSilk() ||
			$this->checkBrowserSafari() ||

			// everyone else
			$this->checkBrowserNetPositive() ||
			$this->checkBrowserFirebird() ||
			$this->checkBrowserKonqueror() ||
			$this->checkBrowserIcab() ||
			$this->checkBrowserPhoenix() ||
			$this->checkBrowserAmaya() ||
			$this->checkBrowserLynx() ||
			$this->checkBrowserShiretoko() ||
			$this->checkBrowserIceCat() ||
			$this->checkBrowserIceweasel() ||
			$this->checkBrowserW3CValidator() ||
			$this->checkBrowserCurl() ||
			$this->checkBrowserWget() ||
			$this->checkBrowserPlayStation() ||
			$this->checkBrowserIframely() ||
			$this->checkBrowserCocoa() ||
			$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' ) );
			if ( isset( $aresult[1] ) ) {
				$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' ) );
			if ( isset( $aversion[1] ) ) {
				$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' ) );
			if ( isset( $aresult[1] ) ) {
				$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 YandexBot or not
	 *
	 * @return boolean True if the browser is the YandexBot otherwise false
	 */
	protected function checkBrowserYandexBot() {
		if ( stripos( $this->_agent, 'YandexBot' ) !== false ) {
			$aresult = explode( '/', stristr( $this->_agent, 'YandexBot' ) );
			if ( isset( $aresult[1] ) ) {
				$aversion = explode( ' ', $aresult[1] );
				$this->setVersion( str_replace( ';', '', $aversion[0] ) );
				$this->_browser_name = self::BROWSER_YANDEXBOT;
				$this->setRobot( true );
				return true;
			}
		}
		return false;
	}

	/**
	 * Determine if the browser is the YandexImageResizer or not
	 *
	 * @return boolean True if the browser is the YandexImageResizer otherwise false
	 */
	protected function checkBrowserYandexImageResizerBot() {
		if ( stripos( $this->_agent, 'YandexImageResizer' ) !== false ) {
			$aresult = explode( '/', stristr( $this->_agent, 'YandexImageResizer' ) );
			if ( isset( $aresult[1] ) ) {
				$aversion = explode( ' ', $aresult[1] );
				$this->setVersion( str_replace( ';', '', $aversion[0] ) );
				$this->_browser_name = self::BROWSER_YANDEXIMAGERESIZER_BOT;
				$this->setRobot( true );
				return true;
			}
		}
		return false;
	}

	/**
	 * Determine if the browser is the YandexCatalog or not
	 *
	 * @return boolean True if the browser is the YandexCatalog otherwise false
	 */
	protected function checkBrowserYandexCatalogBot() {
		if ( stripos( $this->_agent, 'YandexCatalog' ) !== false ) {
			$aresult = explode( '/', stristr( $this->_agent, 'YandexCatalog' ) );
			if ( isset( $aresult[1] ) ) {
				$aversion = explode( ' ', $aresult[1] );
				$this->setVersion( str_replace( ';', '', $aversion[0] ) );
				$this->_browser_name = self::BROWSER_YANDEXCATALOG_BOT;
				$this->setRobot( true );
				return true;
			}
		}
		return false;
	}

	/**
	 * Determine if the browser is the YandexNews or not
	 *
	 * @return boolean True if the browser is the YandexNews otherwise false
	 */
	protected function checkBrowserYandexNewsBot() {
		if ( stripos( $this->_agent, 'YandexNews' ) !== false ) {
			$aresult = explode( '/', stristr( $this->_agent, 'YandexNews' ) );
			if ( isset( $aresult[1] ) ) {
				$aversion = explode( ' ', $aresult[1] );
				$this->setVersion( str_replace( ';', '', $aversion[0] ) );
				$this->_browser_name = self::BROWSER_YANDEXNEWS_BOT;
				$this->setRobot( true );
				return true;
			}
		}
		return false;
	}

	/**
	 * Determine if the browser is the YandexMetrika or not
	 *
	 * @return boolean True if the browser is the YandexMetrika otherwise false
	 */
	protected function checkBrowserYandexMetrikaBot() {
		if ( stripos( $this->_agent, 'YandexMetrika' ) !== false ) {
			$aresult = explode( '/', stristr( $this->_agent, 'YandexMetrika' ) );
			if ( isset( $aresult[1] ) ) {
				$aversion = explode( ' ', $aresult[1] );
				$this->setVersion( str_replace( ';', '', $aversion[0] ) );
				$this->_browser_name = self::BROWSER_YANDEXMETRIKA_BOT;
				$this->setRobot( true );
				return true;
			}
		}
		return false;
	}

	/**
	 * Determine if the browser is the YandexDirect or not
	 *
	 * @return boolean True if the browser is the YandexDirect otherwise false
	 */
	protected function checkBrowserYandexDirectBot() {
		if ( stripos( $this->_agent, 'YandexDirect' ) !== false ) {
			$aresult = explode( '/', stristr( $this->_agent, 'YandexDirect' ) );
			if ( isset( $aresult[1] ) ) {
				$aversion = explode( ' ', $aresult[1] );
				$this->setVersion( str_replace( ';', '', $aversion[0] ) );
				$this->_browser_name = self::BROWSER_YANDEXDIRECT_BOT;
				$this->setRobot( true );
				return true;
			}
		}
		return false;
	}

	/**
	 * Determine if the browser is the YandexWebmaster or not
	 *
	 * @return boolean True if the browser is the YandexWebmaster otherwise false
	 */
	protected function checkBrowserYandexWebmasterBot() {
		if ( stripos( $this->_agent, 'YandexWebmaster' ) !== false ) {
			$aresult = explode( '/', stristr( $this->_agent, 'YandexWebmaster' ) );
			if ( isset( $aresult[1] ) ) {
				$aversion = explode( ' ', $aresult[1] );
				$this->setVersion( str_replace( ';', '', $aversion[0] ) );
				$this->_browser_name = self::BROWSER_YANDEXWEBMASTER_BOT;
				$this->setRobot( true );
				return true;
			}
		}
		return false;
	}

	/**
	 * Determine if the browser is the YandexFavicons or not
	 *
	 * @return boolean True if the browser is the YandexFavicons otherwise false
	 */
	protected function checkBrowserYandexFaviconsBot() {
		if ( stripos( $this->_agent, 'YandexFavicons' ) !== false ) {
			$aresult = explode( '/', stristr( $this->_agent, 'YandexFavicons' ) );
			if ( isset( $aresult[1] ) ) {
				$aversion = explode( ' ', $aresult[1] );
				$this->setVersion( str_replace( ';', '', $aversion[0] ) );
				$this->_browser_name = self::BROWSER_YANDEXFAVICONS_BOT;
				$this->setRobot( true );
				return true;
			}
		}
		return false;
	}

	/**
	 * Determine if the browser is the YandexBlogs or not
	 *
	 * @return boolean True if the browser is the YandexBlogs otherwise false
	 */
	protected function checkBrowserYandexBlogsBot() {
		if ( stripos( $this->_agent, 'YandexBlogs' ) !== false ) {
			$aresult = explode( '/', stristr( $this->_agent, 'YandexBlogs' ) );
			if ( isset( $aresult[1] ) ) {
				$aversion = explode( ' ', $aresult[1] );
				$this->setVersion( str_replace( ';', '', $aversion[0] ) );
				$this->_browser_name = self::BROWSER_YANDEXBLOGS_BOT;
				$this->setRobot( true );
				return true;
			}
		}
		return false;
	}

	/**
	 * Determine if the browser is the YandexMedia or not
	 *
	 * @return boolean True if the browser is the YandexMedia otherwise false
	 */
	protected function checkBrowserYandexMediaBot() {
		if ( stripos( $this->_agent, 'YandexMedia' ) !== false ) {
			$aresult = explode( '/', stristr( $this->_agent, 'YandexMedia' ) );
			if ( isset( $aresult[1] ) ) {
				$aversion = explode( ' ', $aresult[1] );
				$this->setVersion( str_replace( ';', '', $aversion[0] ) );
				$this->_browser_name = self::BROWSER_YANDEXMEDIA_BOT;
				$this->setRobot( true );
				return true;
			}
		}
		return false;
	}

	/**
	 * Determine if the browser is the YandexVideo or not
	 *
	 * @return boolean True if the browser is the YandexVideo otherwise false
	 */
	protected function checkBrowserYandexVideoBot() {
		if ( stripos( $this->_agent, 'YandexVideo' ) !== false ) {
			$aresult = explode( '/', stristr( $this->_agent, 'YandexVideo' ) );
			if ( isset( $aresult[1] ) ) {
				$aversion = explode( ' ', $aresult[1] );
				$this->setVersion( str_replace( ';', '', $aversion[0] ) );
				$this->_browser_name = self::BROWSER_YANDEXVIDEO_BOT;
				$this->setRobot( true );
				return true;
			}
		}
		return false;
	}

	/**
	 * Determine if the browser is the YandexImages or not
	 *
	 * @return boolean True if the browser is the YandexImages otherwise false
	 */
	protected function checkBrowserYandexImagesBot() {
		if ( stripos( $this->_agent, 'YandexImages' ) !== false ) {
			$aresult = explode( '/', stristr( $this->_agent, 'YandexImages' ) );
			if ( isset( $aresult[1] ) ) {
				$aversion = explode( ' ', $aresult[1] );
				$this->setVersion( str_replace( ';', '', $aversion[0] ) );
				$this->_browser_name = self::BROWSER_YANDEXIMAGES_BOT;
				$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' ) );
			if ( isset( $aresult[1] ) ) {
				$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 BingBot or not (last updated 1.9)
	 *
	 * @return boolean True if the browser is the BingBot otherwise false
	 */
	protected function checkBrowserBingBot() {
		if ( stripos( $this->_agent, 'bingbot' ) !== false ) {
			$aresult = explode( '/', stristr( $this->_agent, 'bingbot' ) );
			if ( isset( $aresult[1] ) ) {
				$aversion = explode( ' ', $aresult[1] );
				$this->setVersion( str_replace( ';', '', $aversion[0] ) );
				$this->_browser_name = self::BROWSER_BINGBOT;
				$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' ) );
			if ( isset( $aresult[1] ) ) {
				$aversion = explode( ' ', $aresult[1] );
				$this->setVersion( $aversion[0] );
				$this->_browser_name = self::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' ) );
			if ( isset( $aresult[1] ) ) {
				$aversion = explode( ' ', $aresult[1] );
				$this->setVersion( $aversion[0] );
				$this->_browser_name = self::BROWSER_W3CVALIDATOR;
				return true;
			}
		} elseif ( stripos( $this->_agent, 'W3C-mobileOK' ) !== false ) {
			$this->_browser_name = self::BROWSER_W3CVALIDATOR;
			$this->setMobile( true );
			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' ) );
			if ( isset( $aresult[1] ) ) {
				$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 Brave or not
	 *
	 * @return boolean True if the browser is Brave otherwise false
	 */
	protected function checkBrowserBrave() {
		if ( stripos( $this->_agent, 'Brave/' ) !== false ) {
			$aResult = explode( '/', stristr( $this->_agent, 'Brave' ) );
			if ( isset( $aResult[1] ) ) {
				$aversion = explode( ' ', $aResult[1] );
				$this->setVersion( $aversion[0] );
				$this->setBrowser( self::BROWSER_BRAVE );
				return true;
			}
		} elseif ( stripos( $this->_agent, ' Brave ' ) !== false ) {
			$this->setBrowser( self::BROWSER_BRAVE );
			// this version of the UA did not ship with a version marker
			// e.g. Mozilla/5.0 (Linux; Android 7.0; SM-G955F Build/NRD90M) AppleWebKit/537.36 (KHTML, like Gecko) Brave Chrome/68.0.3440.91 Mobile Safari/537.36
			$this->setVersion( '' );
			return true;
		}
		return false;
	}

	/**
	 * Determine if the browser is Edge or not
	 *
	 * @return boolean True if the browser is Edge otherwise false
	 */
	protected function checkBrowserEdge() {
		if ( $name = ( stripos( $this->_agent, 'Edge/' ) !== false ? 'Edge' : ( ( stripos( $this->_agent, 'Edg/' ) !== false || stripos( $this->_agent, 'EdgA/' ) !== false ) ? 'Edg' : false ) ) ) {
			$aresult = explode( '/', stristr( $this->_agent, $name ) );
			if ( isset( $aresult[1] ) ) {
				$aversion = explode( ' ', $aresult[1] );
				$this->setVersion( $aversion[0] );
				$this->setBrowser( self::BROWSER_EDGE );
				if ( stripos( $this->_agent, 'Windows Phone' ) !== false || stripos( $this->_agent, 'Android' ) !== false ) {
					$this->setMobile( true );
				}
				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 IE11
		if ( stripos( $this->_agent, 'Trident/7.0; rv:11.0' ) !== false ) {
			$this->setBrowser( self::BROWSER_IE );
			$this->setVersion( '11.0' );
			return true;
		} // Test for v1 - v1.5 IE
		elseif ( 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
		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' ) );
				if ( isset( $aresult[1] ) ) {
					$this->setBrowser( self::BROWSER_MSN );
					$this->setVersion( str_replace( array( '(', ')', ';' ), '', $aresult[1] ) );
					return true;
				}
			}
			$aresult = explode( ' ', stristr( str_replace( ';', '; ', $this->_agent ), 'msie' ) );
			if ( isset( $aresult[1] ) ) {
				$this->setBrowser( self::BROWSER_IE );
				$this->setVersion( str_replace( array( '(', ')', ';' ), '', $aresult[1] ) );
				if ( stripos( $this->_agent, 'IEMobile' ) !== false ) {
					$this->setBrowser( self::BROWSER_POCKET_IE );
					$this->setMobile( true );
				}
				return true;
			}
		} // Test for versions > IE 10
		elseif ( stripos( $this->_agent, 'trident' ) !== false ) {
			$this->setBrowser( self::BROWSER_IE );
			$result = explode( 'rv:', $this->_agent );
			if ( isset( $result[1] ) ) {
				$this->setVersion( preg_replace( '/[^0-9.]+/', '', $result[1] ) );
				$this->_agent = str_replace( array( 'Mozilla', 'Gecko' ), 'MSIE', $this->_agent );
			}
		} // Test for Pocket IE
		elseif ( stripos( $this->_agent, 'mspie' ) !== false || stripos( $this->_agent, 'pocket' ) !== false ) {
			$aresult = explode( ' ', stristr( $this->_agent, 'mspie' ) );
			if ( isset( $aresult[1] ) ) {
				$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 );
					if ( isset( $aversion[1] ) ) {
						$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 );
				if ( isset( $aresult[1] ) ) {
					$aversion = explode( ' ', $aresult[1] );
					$this->setVersion( $aversion[0] );
				}
			} else {
				$aversion = explode( ' ', stristr( $resultant, 'opera mini' ) );
				if ( isset( $aversion[1] ) ) {
					$this->setVersion( $aversion[1] );
				}
			}
			$this->_browser_name = self::BROWSER_OPERA_MINI;
			$this->setMobile( true );
			return true;
		} elseif ( stripos( $this->_agent, 'opera' ) !== false ) {
			$resultant = stristr( $this->_agent, 'opera' );
			if ( preg_match( '/Version\/(1*.*)$/', $resultant, $matches ) ) {
				$this->setVersion( $matches[1] );
			} elseif ( preg_match( '/\//', $resultant ) ) {
				$aresult = explode( '/', str_replace( '(', ' ', $resultant ) );
				if ( isset( $aresult[1] ) ) {
					$aversion = explode( ' ', $aresult[1] );
					$this->setVersion( $aversion[0] );
				}
			} else {
				$aversion = explode( ' ', stristr( $resultant, 'opera' ) );
				$this->setVersion( isset( $aversion[1] ) ? $aversion[1] : '' );
			}
			if ( stripos( $this->_agent, 'Opera Mobi' ) !== false ) {
				$this->setMobile( true );
			}
			$this->_browser_name = self::BROWSER_OPERA;
			return true;
		} elseif ( stripos( $this->_agent, 'OPR' ) !== false ) {
			$resultant = stristr( $this->_agent, 'OPR' );
			if ( preg_match( '/\//', $resultant ) ) {
				$aresult = explode( '/', str_replace( '(', ' ', $resultant ) );
				if ( isset( $aresult[1] ) ) {
					$aversion = explode( ' ', $aresult[1] );
					$this->setVersion( $aversion[0] );
				}
			}
			if ( stripos( $this->_agent, 'Mobile' ) !== false ) {
				$this->setMobile( true );
			}
			$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 = preg_split( '/[\/;]+/', stristr( $this->_agent, 'Chrome' ) );
			if ( isset( $aresult[1] ) ) {
				$aversion = explode( ' ', $aresult[1] );
				$this->setVersion( $aversion[0] );
				$this->setBrowser( self::BROWSER_CHROME );
				// Chrome on Android
				if ( stripos( $this->_agent, 'Android' ) !== false ) {
					if ( stripos( $this->_agent, 'Mobile' ) !== false ) {
						$this->setMobile( true );
					} else {
						$this->setTablet( true );
					}
				}
				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' ) );
			if ( isset( $aresult[1] ) ) {
				$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' ) );
			if ( isset( $aresult[1] ) ) {
				$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] );
			if ( isset( $aversion[1] ) ) {
				$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] );
			if ( isset( $aversion[1] ) ) {
				$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' ) );
			if ( isset( $aversion[1] ) ) {
				$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' ) );
			if ( isset( $aversion[1] ) ) {
				$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' ) );
			if ( isset( $aversion[1] ) ) {
				$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;
		} elseif ( 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 Palemoon or not
	 *
	 * @return boolean True if the browser is Palemoon otherwise false
	 */
	protected function checkBrowserPalemoon() {
		if ( stripos( $this->_agent, 'safari' ) === false ) {
			if ( preg_match( '/Palemoon[\/ \(]([^ ;\)]+)/i', $this->_agent, $matches ) ) {
				$this->setVersion( $matches[1] );
				$this->setBrowser( self::BROWSER_PALEMOON );
				return true;
			} elseif ( preg_match( '/Palemoon([0-9a-zA-Z\.]+)/i', $this->_agent, $matches ) ) {
				$this->setVersion( $matches[1] );
				$this->setBrowser( self::BROWSER_PALEMOON );
				return true;
			} elseif ( preg_match( '/Palemoon/i', $this->_agent, $matches ) ) {
				$this->setVersion( '' );
				$this->setBrowser( self::BROWSER_PALEMOON );
				return true;
			}
		}
		return false;
	}

	/**
	 * Determine if the browser is UCBrowser or not
	 *
	 * @return boolean True if the browser is UCBrowser otherwise false
	 */
	protected function checkBrowserUCBrowser() {
		if ( preg_match( '/UC ?Browser\/?([\d\.]+)/', $this->_agent, $matches ) ) {
			if ( isset( $matches[1] ) ) {
				$this->setVersion( $matches[1] );
			}
			if ( stripos( $this->_agent, 'Mobile' ) !== false ) {
				$this->setMobile( true );
			} else {
				$this->setTablet( true );
			}
			$this->setBrowser( self::BROWSER_UCBROWSER );
			return true;
		}
		return false;
	}

	/**
	 * Determine if the browser is Firefox or not
	 *
	 * @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 );
				// Firefox on Android
				if ( stripos( $this->_agent, 'Android' ) !== false || stripos( $this->_agent, 'iPhone' ) !== false ) {
					if ( stripos( $this->_agent, 'Mobile' ) !== false || stripos( $this->_agent, 'Tablet' ) !== false ) {
						$this->setMobile( true );
					} else {
						$this->setTablet( true );
					}
				}
				return true;
			} elseif ( preg_match( '/Firefox([0-9a-zA-Z\.]+)/i', $this->_agent, $matches ) ) {
				$this->setVersion( $matches[1] );
				$this->setBrowser( self::BROWSER_FIREFOX );
				return true;
			} elseif ( preg_match( '/Firefox$/i', $this->_agent, $matches ) ) {
				$this->setVersion( '' );
				$this->setBrowser( self::BROWSER_FIREFOX );
				return true;
			}
		} elseif ( preg_match( '/FxiOS[\/ \(]([^ ;\)]+)/i', $this->_agent, $matches ) ) {
			$this->setVersion( $matches[1] );
			$this->setBrowser( self::BROWSER_FIREFOX );
			// Firefox on Android
			if ( stripos( $this->_agent, 'Android' ) !== false || stripos( $this->_agent, 'iPhone' ) !== false ) {
				if ( stripos( $this->_agent, 'Mobile' ) !== false || stripos( $this->_agent, 'Tablet' ) !== false ) {
					$this->setMobile( true );
				} else {
					$this->setTablet( 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 checkBrowserIceweasel() {
		if ( stripos( $this->_agent, 'Iceweasel' ) !== false ) {
			$aresult = explode( '/', stristr( $this->_agent, 'Iceweasel' ) );
			if ( isset( $aresult[1] ) ) {
				$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;
		} 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( self::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( 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' ) );
			if ( isset( $aresult[1] ) ) {
				$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;
	}

	protected function checkBrowserSamsung() {
		if ( stripos( $this->_agent, 'SamsungBrowser' ) !== false ) {

			$aresult = explode( '/', stristr( $this->_agent, 'SamsungBrowser' ) );
			if ( isset( $aresult[1] ) ) {
				$aversion = explode( ' ', $aresult[1] );
				$this->setVersion( $aversion[0] );
			} else {
				$this->setVersion( self::VERSION_UNKNOWN );
			}
			$this->setBrowser( self::BROWSER_SAMSUNG );
			return true;
		}
		return false;
	}

	protected function checkBrowserSilk() {
		if ( stripos( $this->_agent, 'Silk' ) !== false ) {
			$aresult = explode( '/', stristr( $this->_agent, 'Silk' ) );
			if ( isset( $aresult[1] ) ) {
				$aversion = explode( ' ', $aresult[1] );
				$this->setVersion( $aversion[0] );
			} else {
				$this->setVersion( self::VERSION_UNKNOWN );
			}
			$this->setBrowser( self::BROWSER_SILK );
			return true;
		}
		return false;
	}

	protected function checkBrowserIframely() {
		if ( stripos( $this->_agent, 'Iframely' ) !== false ) {
			$aresult = explode( '/', stristr( $this->_agent, 'Iframely' ) );
			if ( isset( $aresult[1] ) ) {
				$aversion = explode( ' ', $aresult[1] );
				$this->setVersion( $aversion[0] );
			} else {
				$this->setVersion( self::VERSION_UNKNOWN );
			}
			$this->setBrowser( self::BROWSER_I_FRAME );
			return true;
		}
		return false;
	}

	protected function checkBrowserCocoa() {
		if ( stripos( $this->_agent, 'CocoaRestClient' ) !== false ) {
			$aresult = explode( '/', stristr( $this->_agent, 'CocoaRestClient' ) );
			if ( isset( $aresult[1] ) ) {
				$aversion = explode( ' ', $aresult[1] );
				$this->setVersion( $aversion[0] );
			} else {
				$this->setVersion( self::VERSION_UNKNOWN );
			}
			$this->setBrowser( self::BROWSER_COCOA );
			return true;
		}
		return false;
	}

	/**
	 * Detect if URL is loaded from FacebookExternalHit
	 *
	 * @return boolean True if it detects FacebookExternalHit otherwise false
	 */
	protected function checkFacebookExternalHit() {
		if ( stristr( $this->_agent, 'FacebookExternalHit' ) ) {
			$this->setRobot( true );
			$this->setFacebook( true );
			return true;
		}
		return false;
	}

	/**
	 * Detect if URL is being loaded from internal Facebook browser
	 *
	 * @return boolean True if it detects internal Facebook browser otherwise false
	 */
	protected function checkForFacebookIos() {
		if ( stristr( $this->_agent, 'FBIOS' ) ) {
			$this->setFacebook( true );
			return true;
		}
		return false;
	}

	/**
	 * Detect Version for the Safari browser on iOS devices
	 *
	 * @return boolean True if it detects the version correctly otherwise false
	 */
	protected function getSafariVersionOnIos() {
		$aresult = explode( '/', stristr( $this->_agent, 'Version' ) );
		if ( isset( $aresult[1] ) ) {
			$aversion = explode( ' ', $aresult[1] );
			$this->setVersion( $aversion[0] );
			return true;
		}
		return false;
	}

	/**
	 * Detect Version for the Chrome browser on iOS devices
	 *
	 * @return boolean True if it detects the version correctly otherwise false
	 */
	protected function getChromeVersionOnIos() {
		$aresult = explode( '/', stristr( $this->_agent, 'CriOS' ) );
		if ( isset( $aresult[1] ) ) {
			$aversion = explode( ' ', $aresult[1] );
			$this->setVersion( $aversion[0] );
			$this->setBrowser( self::BROWSER_CHROME );
			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 ) {
			$this->setVersion( self::VERSION_UNKNOWN );
			$this->setBrowser( self::BROWSER_IPHONE );
			$this->getSafariVersionOnIos();
			$this->getChromeVersionOnIos();
			$this->checkForFacebookIos();
			$this->setMobile( true );
			return true;
		}
		return false;
	}

	/**
	 * Determine if the browser is iPad or not (last updated 1.7)
	 *
	 * @return boolean True if the browser is iPad otherwise false
	 */
	protected function checkBrowseriPad() {
		if ( stripos( $this->_agent, 'iPad' ) !== false ) {
			$this->setVersion( self::VERSION_UNKNOWN );
			$this->setBrowser( self::BROWSER_IPAD );
			$this->getSafariVersionOnIos();
			$this->getChromeVersionOnIos();
			$this->checkForFacebookIos();
			$this->setTablet( true );
			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 ) {
			$this->setVersion( self::VERSION_UNKNOWN );
			$this->setBrowser( self::BROWSER_IPOD );
			$this->getSafariVersionOnIos();
			$this->getChromeVersionOnIos();
			$this->checkForFacebookIos();
			$this->setMobile( true );
			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 );
			}
			if ( stripos( $this->_agent, 'Mobile' ) !== false ) {
				$this->setMobile( true );
			} else {
				$this->setTablet( true );
			}
			$this->setBrowser( self::BROWSER_ANDROID );
			return true;
		}
		return false;
	}

	/**
	 * Determine if the browser is Vivaldi
	 *
	 * @return boolean True if the browser is Vivaldi otherwise false
	 */
	protected function checkBrowserVivaldi() {
		if ( stripos( $this->_agent, 'Vivaldi' ) !== false ) {
			$aresult = explode( '/', stristr( $this->_agent, 'Vivaldi' ) );
			if ( isset( $aresult[1] ) ) {
				$aversion = explode( ' ', $aresult[1] );
				$this->setVersion( $aversion[0] );
				$this->setBrowser( self::BROWSER_VIVALDI );
				return true;
			}
		}
		return false;
	}

	/**
	 * Determine if the browser is Yandex
	 *
	 * @return boolean True if the browser is Yandex otherwise false
	 */
	protected function checkBrowserYandex() {
		if ( stripos( $this->_agent, 'YaBrowser' ) !== false ) {
			$aresult = explode( '/', stristr( $this->_agent, 'YaBrowser' ) );
			if ( isset( $aresult[1] ) ) {
				$aversion = explode( ' ', $aresult[1] );
				$this->setVersion( $aversion[0] );
				$this->setBrowser( self::BROWSER_YANDEX );

				if ( stripos( $this->_agent, 'iPad' ) !== false ) {
					$this->setTablet( true );
				} elseif ( stripos( $this->_agent, 'Mobile' ) !== false ) {
					$this->setMobile( true );
				} elseif ( stripos( $this->_agent, 'Android' ) !== false ) {
					$this->setTablet( true );
				}

				return true;
			}
		}

		return false;
	}

	/**
	 * Determine if the browser is a PlayStation
	 *
	 * @return boolean True if the browser is PlayStation otherwise false
	 */
	protected function checkBrowserPlayStation() {
		if ( stripos( $this->_agent, 'PlayStation ' ) !== false ) {
			$aresult = explode( ' ', stristr( $this->_agent, 'PlayStation ' ) );
			$this->setBrowser( self::BROWSER_PLAYSTATION );
			if ( isset( $aresult[0] ) ) {
				$aversion = explode( ')', $aresult[2] );
				$this->setVersion( $aversion[0] );
				if ( stripos( $this->_agent, 'Portable)' ) !== false || stripos( $this->_agent, 'Vita' ) !== false ) {
					$this->setMobile( true );
				}
				return true;
			}
		}
		return false;
	}

	/**
	 * Determine if the browser is Wget or not (last updated 1.7)
	 *
	 * @return boolean True if the browser is Wget otherwise false
	 */
	protected function checkBrowserWget() {
		if ( preg_match( '!^Wget/([^ ]+)!i', $this->_agent, $aresult ) ) {
			$this->setVersion( $aresult[1] );
			$this->setBrowser( self::BROWSER_WGET );
			return true;
		}
		return false;
	}
	/**
	 * Determine if the browser is cURL or not (last updated 1.7)
	 *
	 * @return boolean True if the browser is cURL otherwise false
	 */
	protected function checkBrowserCurl() {
		if ( strpos( $this->_agent, 'curl' ) === 0 ) {
			$aresult = explode( '/', stristr( $this->_agent, 'curl' ) );
			if ( isset( $aresult[1] ) ) {
				$aversion = explode( ' ', $aresult[1] );
				$this->setVersion( $aversion[0] );
				$this->setBrowser( self::BROWSER_CURL );
				return true;
			}
		}
		return false;
	}

	/**
	 * Determine the user's platform (last updated 2.0)
	 */
	protected function checkPlatform() {
		if ( stripos( $this->_agent, 'windows' ) !== false ) {
			$this->_platform = self::PLATFORM_WINDOWS;
		} elseif ( stripos( $this->_agent, 'iPad' ) !== false ) {
			$this->_platform = self::PLATFORM_IPAD;
		} elseif ( stripos( $this->_agent, 'iPod' ) !== false ) {
			$this->_platform = self::PLATFORM_IPOD;
		} elseif ( 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, 'Silk' ) !== false ) {
			$this->_platform = self::PLATFORM_FIRE_OS;
		} elseif ( stripos( $this->_agent, 'linux' ) !== false && stripos( $this->_agent, 'SMART-TV' ) !== false ) {
			$this->_platform = self::PLATFORM_LINUX . '/' . self::PLATFORM_SMART_TV;
		} elseif ( stripos( $this->_agent, 'linux' ) !== false ) {
			$this->_platform = self::PLATFORM_LINUX;
		} elseif ( stripos( $this->_agent, 'Nokia' ) !== false ) {
			$this->_platform = self::PLATFORM_NOKIA;
		} elseif ( 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;
		} elseif ( stripos( $this->_agent, 'Playstation' ) !== false ) {
			$this->_platform = self::PLATFORM_PLAYSTATION;
		} elseif ( stripos( $this->_agent, 'Roku' ) !== false ) {
			$this->_platform = self::PLATFORM_ROKU;
		} elseif ( stripos( $this->_agent, 'iOS' ) !== false ) {
			$this->_platform = self::PLATFORM_IPHONE . '/' . self::PLATFORM_IPAD;
		} elseif ( stripos( $this->_agent, 'tvOS' ) !== false ) {
			$this->_platform = self::PLATFORM_APPLE_TV;
		} elseif ( stripos( $this->_agent, 'curl' ) !== false ) {
			$this->_platform = self::PLATFORM_TERMINAL;
		} elseif ( stripos( $this->_agent, 'CrOS' ) !== false ) {
			$this->_platform = self::PLATFORM_CHROME_OS;
		} elseif ( stripos( $this->_agent, 'okhttp' ) !== false ) {
			$this->_platform = self::PLATFORM_JAVA_ANDROID;
		} elseif ( stripos( $this->_agent, 'PostmanRuntime' ) !== false ) {
			$this->_platform = self::PLATFORM_POSTMAN;
		} elseif ( stripos( $this->_agent, 'Iframely' ) !== false ) {
			$this->_platform = self::PLATFORM_I_FRAME;
		}
	}
}
// @codingStandardsIgnoreEnd