How to track the activities of visitor

Here in this post, you will learn how to track the activities of the visitor in your website. By tracking activities here, I mean to say, we will want to store information about from which link the visitor came, whats the IP address of the visitor, did he come by clicking a link on any other website or did he came directly to our page. All such information can be tracked. Information we would like to track are:

• IP of the visitor: $_SERVER['REMOTE_ADDR']
• Requested URI: $_SERVER['REQUEST_URI']
• Current Website: $_SERVER['HTTP_HOST']
• Current URL: curlPageURL()
  

   public function curPageURL() {
          $pageURL = 'http';
          if ($_SERVER["HTTPS"] == "on") {$pageURL .= "s";}
          $pageURL .= "://";
          if ($_SERVER["SERVER_PORT"] != "80") {
              $pageURL .= $_SERVER["SERVER_NAME"].":".$_SERVER["SERVER_PORT"].$_SERVER["REQUEST_URI"];
          } else {
              $pageURL .= $_SERVER["SERVER_NAME"].$_SERVER["REQUEST_URI"];
          }
          return $pageURL;
      }

  
  
• Browser: detect($_SERVER['HTTP_USER_AGENT'])

public static function detect($userAgent)     {        strtolower($userAgent);        if (preg_match('/opera/', $userAgent)) {            $name = 'opera';        }        elseif (preg_match('/chrome/', $userAgent)) {            $name = 'chrome';            }        elseif (preg_match('/webkit/', $userAgent)) {            $name = 'safari';        }        elseif (preg_match('/msie/', $userAgent)) {            $name = 'msie';        }        elseif (preg_match('/mozilla/', $userAgent) && !preg_match('/compatible/', $userAgent)) {            $name = 'mozilla';        }        else {            $name = 'unrecognized';        }        // version?        if (preg_match('/.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/', $userAgent, $matches)) {            $version = $matches[1];        }        else {            $version = 'unknown';        }        // platform?        if (preg_match('/linux/', $userAgent)) {            $platform = 'linux';        }        elseif (preg_match('/macintosh|mac os x/', $userAgent)) {            $platform = 'mac';        }        elseif (preg_match('/windows|win32/', $userAgent)) {            $platform = 'windows';        }        else {            $platform = 'unrecognized';        }        return array(            'name'      => $name,            'version'   => $version,            'platform'  => $platform,            'userAgent' => $userAgent        );    }

Now that we can get these information we can store these information to database for each page load. This will make our Activity Tracker for our website.