How to get Browser data using PHP coding

Sometimes we are in need of browser data to work accordingly,

 For example,
         Name of the Browser, Version,
         To check is Javascript or Cookies enabled in the current Browser?
          etc......

 TO Do this there is a php function named get_browser

Examples:
     PHP Code:

            $browser = get_browser(null, true);                                                                                 

             print_r($browser);

     Output:

           Array                                                                                                                                  

           (

                 [browser_name_regex] => ^mozilla/5\.0 (windows; .; windows nt 5\.1; .*rv:.*) gecko/.* firefox/0\.9.*$

                 [browser_name_pattern] => Mozilla/5.0 (Windows; ?; Windows NT 5.1; *rv:*) Gecko/* Firefox/0.9*

                  [parent] => Firefox 0.9

                  [platform] => WinXP

                  [browser] => Firefox

                  [version] => 0.9

                  [majorver] => 0

                  [minorver] => 9

                  [cssversion] => 2

                  [frames] => 1

                  [iframes] => 1

                  [tables] => 1

                  [cookies] => 1

                  [backgroundsounds] =>

                  [vbscript] =>

                  [javascript] => 1

                  [javaapplets] => 1

                  [activexcontrols] =>

                  [cdf] =>

                  [aol] =>

                  [beta] => 1

                  [win16] =>

                  [crawler] =>

                  [stripper] =>

                  [wap] =>

                  [netclr] =>

             )

TroubleShooting get_browser

1) If get_browser is not working as excepted

         Step 1) Check whether browscap in installed in your system with the help of If it is installed, phpinfo will show like below 

Else it will look like

        

So if browscap is not installed,
     Go ahead with the following steps to install browscap

            Step 1 : Download php_browscap.ini file from the link http://browsers.garykeith.com/downloads

             Step 2 : Place php_browscap.ini anywhere in the system and register the path of the file in php.ini

      For example:
           Initially php.ini will look like,

              [browscap]

               ; http://www.php.net/manual/en/misc.configuration.php#ini.browscap

               ;browscap = extra/browscap.ini

              We have to modify the above code as 

                 [browscap]

                 ; http://www.php.net/manual/en/misc.configuration.php#ini.browscap

                 browscap = /path/to/php_browscap.ini

               Note: Dont forget to uncomment the browscap line

              Step 3 : Restart Apache i.e service httpd restart