Check Member's/ User's Online or Offline Status

Introduction

The following piece of code will calculate the last visited time of a Member/User and calculate the time difference with the current time. And if the Member/User's last visited time is greater than 10 minutes then that will be considered OFFLINE status, otherwise ONLINE.

Background

I was just searching for a time difference code in Bakery but couldn't find any simple code. I developed and used the following code to calculate the time a User/Member is online or offline.

Using the code

There are only three steps to follow. This code is only for CakePHP 1.5.

"I am assuming that you have a table named MEMBER (you can customize it according to your requirements)".

1. Make a field last_visit (DATETIME) in MEMBER table.
2. For app controller:
PHP

// " Component Class "

class AppController extends Controller {        
    /*
    *
    * beforeRender() function will run on every visit of the website
    */
    function beforeRender()
    {            
        ### UPDATE LAST VISIT ###
        $online_offline_status = 0;
        if ($this->Session->check('userId')==true){
        // Checking for the SESSION - Proceed only if MEMBER/USER is logged in.
            $this->loadModel('Member'); // Loading MEMBER Model
            
            // UPDATE MEMBER VISIT TIME
            $last_visit = date('Y-m-d H:i:s', time());
            $this->Member->updateAll(array('Member.last_visit' => '"'.$last_visit.'"'), 
                            array('Member.id' => $this->Session->read('userId')));

            // GET TIME DIFFERENCE
            $member_last_visit = $this->Member->find('first', array('conditions' => 
               array('Member.id' => $this->Session->read('userId'))));
            $current_time = strtotime(date("Y-m-d H:i:s")); // CURRENT TIME
            $last_visit = strtotime($member_last_visit['Member']['last_visit']); // LAST VISITED TIME
            
            $time_period = floor(round(abs($current_time - $last_visit)/60,2)); //CALCULATING MINUTES
            
            //IF YOU WANT TO CALCULATE DAYS THEN USER THIS
            //$time_period = floor(round(abs($current_time - $last_visit)/60,2)/1440);
            
            echo $time_period;
            if ($time_period <= 10){
                $online_offline_status = 1; // Means User is ONLINE
            } else {
                $online_offline_status = 0; // Means User is OFFLINE
            }
        }    
        $this->set('online_offline_status', $online_offline_status);
        
    }//end beforeRender()            
}

3. Simply use the following code in your .ctp file according to your demand.
PHP

// " View Template "
<!-- IF USER IS OFFLINE -->

if ($online_offline_status == 0){
  echo '(Member/User is Offline)';
<!-- IF USER IS OFFLINE -->
 } else if ($online_offline_status == 1) {
  echo '(Member/User is Online)';
}