session length

Hi,

Is there a possibility to find out how long a session is active?
I mean i can easily say how long it's active by saving a in time when it's
started and a out time when the person clicks on a "logout" link for
example, but what's with the ones that just close the window? How can i
check how long a session was active?

Thanks, for help and recommodations!

Ron

Theres probably an easier way but couldn't you create an object that
writes to a log the start time of the session (thus creation of the
object) and then have a destructor that will write to the log the time
when the session (thus object) is destroyed?

e.g


class Logger {

public function __construct(){

....log start time to file;

}

public function __destruct(){

....log end time to file;

}

}

Then store it in your session. Then check for it on each page after
session_start() and create it if it does not exist?


Regards,

paul

On 15 Dec, 18:47, macca <ptmcna...@googlemail.com> wrote:
> Theres probably an easier way but couldn't you create an object that
> writes to a log the start time of the session (thus creation of the
> object) and then have a destructor that will write to the log the time
> when the session (thus object) is destroyed?
>
> e.g
>
> class Logger {
>
> public function __construct(){
>
> ...log start time to file;
>
> }
>
> public function __destruct(){
>
> ...log end time to file;
>
> }
> }
>
> Then store it in your session. Then check for it on each page after
> session_start() and create it if it does not exist?
>
> Regards,
>
> paul

Not holding out a lot of hope for this approach - I'd be surprised if
the default session reaper bothers with destructors. I'd go with
writing my own session handling functions.

C.

wasnt to keen on it myself...it was just a stab in the dark.

But how can I recognize if someone just closed the Window? How is the
destructor function called?

Right now my script looks roughly like:

<?php
session_start();
if(isset($_GET['logout'])&& isset($_SESSION['id'])) {
$_SESSION['out-time']=getdate();
write (email); //to identify "session taker"
write(intime);
write(outtime);
session_destroy();
}
if (isset($_POST['email'])) {
save in time in session var;
save email in session var;
save session id in session var;
}
if (isset($_SESSION['email'])) {
/* session active content with logout link*/
?>
<br /><a href="<?php echo $_SERVER['PHP_SELF'];?>?logout=1">logout</a>
<?php
}
else {
?>
/* sessaion login conent with input field "email" */
} ?>

Isd this any usable? How would you recommend me going on this?
What I want: I wanna see which user looks for how long on my page without
closing the window -? how long the session is active. If the window is
closed now, no out time is being recorded... :(

Thanks for help!
Ron

..oO(Ron Eggler)

>But how can I recognize if someone just closed the Window?

You can't. The session just times-out.

>Isd this any usable? How would you recommend me going on this?
>What I want: I wanna see which user looks for how long on my page without
>closing the window -?

Impossible. All you can get is the time between the first and the last
request made to your site. What happens after the last request is out of
your control. You can't tell whether the visitor is still reading your
page for an hour or if he's away already.

>how long the session is active. If the window is
>closed now, no out time is being recorded... :(

That's simply how HTTP works. Remember: It's a stateless protocol. Every
single request is completely independent from each other:

* user sends request
* server answers request
* user is gone

That's it, no more no less. Session are just a way to _partly_ overcome
this issue.

Micha

Michael Fesser wrote:

> .oO(Ron Eggler)
>
>>But how can I recognize if someone just closed the Window?
>
> You can't. The session just times-out.
>
>>Isd this any usable? How would you recommend me going on this?
>>What I want: I wanna see which user looks for how long on my page without
>>closing the window -?
>
> Impossible. All you can get is the time between the first and the last
> request made to your site. What happens after the last request is out of
> your control. You can't tell whether the visitor is still reading your
> page for an hour or if he's away already.
>
>>how long the session is active. If the window is
>>closed now, no out time is being recorded... :(
>
> That's simply how HTTP works. Remember: It's a stateless protocol. Every
> single request is completely independent from each other:
>
> * user sends request
> * server answers request
> * user is gone
>
> That's it, no more no less. Session are just a way to _partly_ overcome
> this issue.
>
Michael,

Thanks for your response and right - I can record how long a user is looking
at my page by Javascript. Now I'm thinking if i can call a php script every
e.g. second that would update the information in a mysql table... but do i
actually need to display the "dummy php"page in a frame even tho there's no
html output or can i just call it"hidden" in the backkground somehow?

Thanks,
Ron

Ron Eggler wrote:

> Michael Fesser wrote:
>
>> .oO(Ron Eggler)
>>
>>>But how can I recognize if someone just closed the Window?
>>
>> You can't. The session just times-out.
>>
>>>Isd this any usable? How would you recommend me going on this?
>>>What I want: I wanna see which user looks for how long on my page without
>>>closing the window -?
>>
>> Impossible. All you can get is the time between the first and the last
>> request made to your site. What happens after the last request is out of
>> your control. You can't tell whether the visitor is still reading your
>> page for an hour or if he's away already.
>>
>>>how long the session is active. If the window is
>>>closed now, no out time is being recorded... :(
>>
>> That's simply how HTTP works. Remember: It's a stateless protocol. Every
>> single request is completely independent from each other:
>>
>> * user sends request
>> * server answers request
>> * user is gone
>>
>> That's it, no more no less. Session are just a way to _partly_ overcome
>> this issue.
>>
> Michael,
>
> Thanks for your response and right - I can record how long a user is
> looking at my page by Javascript. Now I'm thinking if i can call a php
> script every e.g. second that would update the information in a mysql
> table... but do i actually need to display the "dummy php"page in a frame
> even tho there's no html output or can i just call it"hidden" in the
> backkground somehow?
>
> Thanks,
> Ron
I got an idea: I'll load my content into one frame (the content where i
wannas know the session time). And in the other frame (null frame) i load a
script that's writing data passed by GET into a db. The time is measured by
javascript in the content file and every minute i call my null frame php,
passing the time over in the url.
That should work fine.
*building it now* :)

Ron

On Mon, 17 Dec 2007 21:01:40 GMT, Ron Eggler <NOREPLY@example.com>
wrote:

>Ron Eggler wrote:
>
>> Michael Fesser wrote:
>>
>>> .oO(Ron Eggler)
>>>
>>>>But how can I recognize if someone just closed the Window?
>>>
>>> You can't. The session just times-out.
>>>
>>>>Isd this any usable? How would you recommend me going on this?
>>>>What I want: I wanna see which user looks for how long on my page without
>>>>closing the window -?
>>>
>>> Impossible. All you can get is the time between the first and the last
>>> request made to your site. What happens after the last request is out of
>>> your control. You can't tell whether the visitor is still reading your
>>> page for an hour or if he's away already.
>>>
>>>>how long the session is active. If the window is
>>>>closed now, no out time is being recorded... :(
>>>
>>> That's simply how HTTP works. Remember: It's a stateless protocol. Every
>>> single request is completely independent from each other:
>>>
>>> * user sends request
>>> * server answers request
>>> * user is gone
>>>
>>> That's it, no more no less. Session are just a way to _partly_ overcome
>>> this issue.
>>>
>> Michael,
>>
>> Thanks for your response and right - I can record how long a user is
>> looking at my page by Javascript. Now I'm thinking if i can call a php
>> script every e.g. second that would update the information in a mysql
>> table... but do i actually need to display the "dummy php"page in a frame
>> even tho there's no html output or can i just call it"hidden" in the
>> backkground somehow?
>>
>> Thanks,
>> Ron
>I got an idea: I'll load my content into one frame (the content where i
>wannas know the session time). And in the other frame (null frame) i load a
>script that's writing data passed by GET into a db. The time is measured by
>javascript in the content file and every minute i call my null frame php,
>passing the time over in the url.
>That should work fine.
>*building it now* :)

....don't do that.

Just call the script like an image file using javascript, that's what
I do. Like nyah:

: A = "<img src='blah.php?screen_width=";
: B = screen.width
: C = "&screen_height=";
: D = screen.height
: E = "&color_depth=";
: F = screen.colorDepth
: G = "&os=";
: H = OS
: I = "&browser=";
: J = browser
: K = "&version=";
: L = version
: M = "&cookies=";
: N = cookies
: O = "&java=";
: P = java
: Q = "&flash=";
: R = flash
: S = "&flashversion=";
: T = flashversion
: U = "&time=";
: V = time
: W = "&ref=";
: X = document.referrer
: Y = "&raw=";
: Z = raw
: AA = "'>";
:
: document.write(A + B + C + D + E + F + G + H + I + J + K + L + M + N + O + P + Q + R + S + T + U + V + W + X + Y + Z + AA);

That way you don't need to bother using frames or multiple pages of
any sort.

--

Onideus Mad Hatter
mhm ¹ x ¹
http://www.backwater-productions.net
http://www.backwater-productions.net/hatter-blog


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Onideus Mad Hatter wrote:

> On Mon, 17 Dec 2007 21:01:40 GMT, Ron Eggler <NOREPLY@example.com>
> wrote:
>
>>Ron Eggler wrote:
>>
>>> Michael Fesser wrote:
>>>
>>>> .oO(Ron Eggler)
>>>>
>>>>>But how can I recognize if someone just closed the Window?
>>>>
>>>> You can't. The session just times-out.
>>>>
>>>>>Isd this any usable? How would you recommend me going on this?
>>>>>What I want: I wanna see which user looks for how long on my page
>>>>>without closing the window -?
>>>>
>>>> Impossible. All you can get is the time between the first and the last
>>>> request made to your site. What happens after the last request is out
>>>> of your control. You can't tell whether the visitor is still reading
>>>> your page for an hour or if he's away already.
>>>>
>>>>>how long the session is active. If the window is
>>>>>closed now, no out time is being recorded... :(
>>>>
>>>> That's simply how HTTP works. Remember: It's a stateless protocol.
>>>> Every single request is completely independent from each other:
>>>>
>>>> * user sends request
>>>> * server answers request
>>>> * user is gone
>>>>
>>>> That's it, no more no less. Session are just a way to partly overcome
>>>> this issue.
>>>>
>>> Michael,
>>>
>>> Thanks for your response and right - I can record how long a user is
>>> looking at my page by Javascript. Now I'm thinking if i can call a php
>>> script every e.g. second that would update the information in a mysql
>>> table... but do i actually need to display the "dummy php"page in a
>>> frame even tho there's no html output or can i just call it"hidden" in
>>> the backkground somehow?
>>>
>>> Thanks,
>>> Ron
>>I got an idea: I'll load my content into one frame (the content where i
>>wannas know the session time). And in the other frame (null frame) i load
>>a script that's writing data passed by GET into a db. The time is measured
>>by javascript in the content file and every minute i call my null frame
>>php, passing the time over in the url.
>>That should work fine.
>>*building it now* :)
>
> ...don't do that.
>
> Just call the script like an image file using javascript, that's what
> I do. Â*Like nyah:
>
> : Â* Â* Â* Â* Â* A = "<img src='blah.php?screen_width=";
> : Â* Â* Â* Â* Â* B = screen.width
> : Â* Â* Â* Â* Â* C = "&screen_height=";
> : Â* Â* Â* Â* Â* D = screen.height
> : Â* Â* Â* Â* Â* E = "&color_depth=";
> : Â* Â* Â* Â* Â* F = screen.colorDepth
> : Â* Â* Â* Â* Â* G = "&os=";
> : Â* Â* Â* Â* Â* H = OS
> : Â* Â* Â* Â* Â* I = "&browser=";
> : Â* Â* Â* Â* Â* J = browser
> : Â* Â* Â* Â* Â* K = "&version=";
> : Â* Â* Â* Â* Â* L = version
> : Â* Â* Â* Â* Â* M = "&cookies=";
> : Â* Â* Â* Â* Â* N = cookies
> : Â* Â* Â* Â* Â* O = "&java=";
> : Â* Â* Â* Â* Â* P = java
> : Â* Â* Â* Â* Â* Q = "&flash=";
> : Â* Â* Â* Â* Â* R = flash
> : Â* Â* Â* Â* Â* S = "&flashversion=";
> : Â* Â* Â* Â* Â* T = flashversion
> : Â* Â* Â* Â* Â* U = "&time=";
> : Â* Â* Â* Â* Â* V = time
> : Â* Â* Â* Â* Â* W = "&ref=";
> : Â* Â* Â* Â* Â* X = document.referrer
> : Â* Â* Â* Â* Â* Y = "&raw=";
> : Â* Â* Â* Â* Â* Z = raw
> : Â* Â* Â* Â* Â* AA = "'>";
> : Â* Â*
> : Â* Â* Â* Â* Â* document.write(A + B + C + D + E + F + G + H + I + J + K + L +
> : Â* Â* Â* Â* Â* M + N + O + P + Q + R + S + T + U + V + W + X + Y + Z + AA);
>
> That way you don't need to bother using frames or multiple pages of
> any sort.
>
That would have been a good idea... you're right but i already got it
working.... :) But - damn, i shoulda thought about this earlier as well -
hmm anyways i may get the chance to change it a lil later... it would be
nicer to have two files only instead one 3 :)

Thanks for the hint for sure and damn me! :)

Ron