Mesuring duration of session

[effennel]

Hi,

I need to log the precise duration of a session. I can log the time at session start. I do I get the time at session end if, for example, the user leaves by closing the browser?

Duration has to be precise, no timeout after x minutes...

Thanks
FnL

 

[sleipnir214]

In order to catch the time at which the user closed the browser, the browser would have to interact with a script on your server at that time. There is no browser-independent way to do that.

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TANSTAAFL!!

 

[btaber]

Here is a creative way

use javascript to call a script that returns a 1 pixel image on your server every minuite or so...

JavaScript

<script>
function checksession(){
var tmp=new Image;
tmp.src='webbug.php';
}
setTimeOut(1000, checksession());
</script>

PHP script webbug.php

// 1 pixel blank gif image   :)
echo base64_decode("R0lGODlhAQABAIAAAP///wAAACH5BAAAAAAALAAAAAABAAEAAAICRAEAOw==");

Of course that all depends on the fact that the person has JavaScript enabled

There is no really fool-proof way...

Hope that helps!


P.S. I didn't test that code.... but the idea is sound

 

[effennel]

Thanks for your help.

I like creative solutions...

Cheers,
FnL