how to set a session via timestamp

[redarrow]

How do you set a session via a time stamp.

 

please help and explain your code so i get the drift please.

 

i am trying to create a online offline plug in.

 

The code does not work, as i don't no how to set the session,

in time stamp, and delete after a set time.

 

example

<?php

// if usernmame via session.
if($_SESSION['username']){

//The user's current login time plus 1 minute.
$_SESSION['timestamp']=+60;


// if the session is set.
if(isset($_SESSION['timestamp'])){

// user is online.
echo "user is on line!";

}else{

// if session less then 60 user offline.
if($_SESSION['timestamp']-60){

	//unset the session.
	unset($_SESSION['timestamp']);

	// show user is online.
echo"user not online!";
}
}

}else{
//if session username is not there. 
header("location: http://www.google.com");
exit;
}
?>

[pkSML]

Your logic doesn't make sense to me.

 

Assuming user A is inquiring about user B: User A would not have User B anywhere in his session.

Every time someone inquires of their own session, they are definitely online.

 

Here's the logic that makes sense:

You'll need a MySQL database that records that timestamp of each user's last action (there would need to be a login system). Then your script would inquire about a user's online/offline status through the database. Session data would only serve to keep the user's username stored and available to write an updated timestamp to the database.

[redarrow]

look at this tell me where i am going wrong please.

 

i need the session to expire after 1 min so i can see online and offline users.

 

the code when done will be added to the header off the project.

 

 

if(isset($_SESSION['online_users']==time())){ << do i add this?

<?php

$_SESSION['podcast_user_id']=24;


$sql4="SELECT * FROM podcast_users WHERE podcast_user_id='{$_SESSION['podcast_user_id']}' AND podcast_activated='yes'";

$res4=mysql_query($sql4)or die("Select users error\n".mysql_error());


if(mysql_num_rows($res4)){
   
  $timestamp=time();
   
   $users_ip=$_SERVER['REMOTE_ADDR'];
   
   $sql5="INSERT INTO online_offline(users_id,online_timestamp,users_ip)VALUES('".$_SESSION['podcast_user_id']."','".mysql_real_escape_string($timestamp)."','".mysql_real_escape_string($users_ip)."')";
   

   
$res5=mysql_query($sql5)or die("Update online offline error\n".mysql_error());
}

$sql6="SELECT * FROM online_offline";

$res6=mysql_query($sql6)or die("SELECT online offline error\n".mysql_error());

while($online_data=mysql_fetch_assoc($res6)){

   $_SESSION['online_offline_id']=$online_data['online_offline_id'];
   
   $_SESSION['online_users']=$online_data['online_timestamp'];
   
   $_SESSION['online_users']+60;
   
   
   if(isset($_SESSION['online_users'])){
      
     echo "user with the id of:\n {$_SESSION['online_offline_id']} is online! <br>";
      
      }else{
      
      	unset($_SESSION['online_user']);
      	
      	echo "user with the id of:\n {$_SESSION['online_offline_id']} is NOT online!<br> ";
   }
   
}

?>

[redarrow]

this code sort off works you tell me if it correct please.

 

<?php session_start();

$_SESSION['podcast_user_id']=24;


$sql4="SELECT * FROM podcast_users WHERE podcast_user_id='{$_SESSION['podcast_user_id']}' AND podcast_activated='yes'";

$res4=mysql_query($sql4)or die("Select users error\n".mysql_error());


if(mysql_num_rows($res4)){
   
  $timestamp=time();
   
   $users_ip=$_SERVER['REMOTE_ADDR'];
   
   $sql5="INSERT INTO online_offline(users_id,online_timestamp,users_ip)VALUES('".$_SESSION['podcast_user_id']."','".mysql_real_escape_string($timestamp)."','".mysql_real_escape_string($users_ip)."')";
   

   
$res5=mysql_query($sql5)or die("Update online offline error\n".mysql_error());
}

$sql6="SELECT * FROM online_offline";

$res6=mysql_query($sql6)or die("SELECT online offline error\n".mysql_error());

while($online_data=mysql_fetch_assoc($res6)){

   $_SESSION['online_offline_id']=$online_data['online_offline_id'];
   
   $_SESSION['online_users']=$online_data['online_timestamp'];
   
   $_SESSION['online_users']+60;
   
   $time_now=time();
   
   if(($_SESSION['online_users'])==($time_now)){
      
     echo "user with the id of:\n {$_SESSION['online_offline_id']} is online! <br>";
      
      }else{
      
      	unset($_SESSION['online_user']);
      	
      	echo "user with the id of:\n {$_SESSION['online_offline_id']} is NOT online!<br> ";
   }
   
}

?>

[pkSML]

I'm still trying to understand what you're doing.

 

So you have a session-based login system. Users have one minute to start downloading a podcast, otherwise they'll be logged out???

[redarrow]

no i set it to 1 min for example only.

 

i want a set session, so a user will be logged out after 30 minutes

 

if they want to continue they log in again.

 

i need to find a way if the user continues to use the web site the session keeps but if they log out there offline.

 

like this web site ...

if a user close the browser then there still online so i fort sending them to the log in page is best after a set time.

[pkSML]

You can set a timeout in the session itself.

 

Continually update the session on every page with an expiry X amount of seconds into the future.

The way you do this is with session_set_cookie_params

session_set_cookie_params must be set before you run session_start

 

 

On the server side, set the session.gc_maxlifetime specifies the number of seconds after which data will be seen as 'garbage' and cleaned up. This can be found in your PHP.ini file.