Jiansen Lu's Computing Blog: Using PHP to identify browser type

Main function to use is: $_SERVER['HTTP_USER_AGENT']. This can tell us more about the user's operating system, as well as their browser.

DetectBrowser.php is following:

<?php

include ("Browser.php");

$browser = new Browser();
echo "<center><h1> Check Your Browser!!</h1></center>";
echo "Your Browser is ".$browser->getBrowser();
?>
The result can be seen HERE.
Here Browser.php is free software from Chris Schuld.
<?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;
      }

     }
    }
?>
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Tuesday, December 7, 2010

Using PHP to identify browser type

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