How to use timeouts in sessions?

bradsteele · Aug 3, 2005

HI,

I am a newbie to PHP and I am trying to initate a session that will timeout after an extended period of time. Does anyone have any url's or help they can send me to help with this? Also, does clicks within a Authorware Web Player window constitute activity within the browser itself?

Thanks,

Brad

sleipnir214 · Aug 3, 2005

I can't answer your second question.

As to the first question, perhaps faq434-4908 can clarify some things.

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Kurt111780 · Jan 12, 2006

I don't under stand php sessions either. I tried this from php.net but it seemed to do nothing.

Code:

/* set the cache limiter to 'private' */

session_cache_limiter('private');
$cache_limiter = session_cache_limiter();

/* set the cache expire to 1 minutes */
session_cache_expire(1);
$cache_expire = session_cache_expire();

/* start the session */

session_start();

It's only easy when you know how.

http://www.seedandgarden.com

sleipnir214 · Jan 12, 2006

The thing about PHP sessions is that it is very easy to over-analyze them.

At the core:
1. Your script invokes session_start().
2. Your script sets or uses elements of the $_SESSION superglobal array.
3. Any other scripts that invoke session_start() will have the same session variables you have previously set.

There are details about tailoring how long session variables will last -- this is explained in FAQ434-4908.

But to get a handle on sessions is to use them. As an example, take the following set of scripts:

s1.php:

Code:

<?php
session_start();
print '<html><body><pre>Session array at start:
';
print_r ($_SESSION);

$_SESSION['foo'] = 'a';
$_SESSION['bar'] = 'b';

print 'Session array at end:
';
print_r ($_SESSION);

print '</pre><a href="s2.php">click here for next script</a></body></html>';
?>

s2.php:

Code:

<?php
session_start();
print '<html><body><pre>Session array at start:
';
print_r ($_SESSION);

$_SESSION['foo'] = '';
unset($_SESSION['bar']);
$_SESSION['baz'] = 'orange';

print 'Session array at end:
';
print_r ($_SESSION);

print '</pre><a href="s3.php">click here for next script</a></body></html>';
?>

s3.php:

Code:

<?php
session_start();
print '<html><body><pre>Session array at start:
';
print_r ($_SESSION);

$_SESSION['foo'] = '';
unset($_SESSION['bar']);
$_SESSION['baz'] = 'orange';

print 'Session array at end:
';
print_r ($_SESSION);

print '</pre><a href="s3.php">click here for next script</a></body></html>';
?>

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How to use timeouts in sessions?

bradsteele

Programmer

sleipnir214

Programmer

Kurt111780

Technical User

sleipnir214

Programmer

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