mirrors/Piwigo
1
0
Fork 0
mirror of https://github.com/Piwigo/Piwigo.git synced 2025-04-29 12:49:57 +03:00
Code Issues Projects Releases Packages Wiki Activity Actions

improve sessions: add comments to functions

Browse source 
git-svn-id: http://piwigo.org/svn/trunk@1010 68402e56-0260-453c-a942-63ccdbb3a9ee
This commit is contained in:
nikrou 2006-01-21 10:56:36 +00:00
parent 6ab5e21605
commit 0b28c9da75
1 changed files with 60 additions and 28 deletions
Download patch file Download diff file Expand all files Collapse all files

88
include/functions_session.inc.php
View file

@ -36,39 +36,46 @@ if (isset($conf['session_save_handler'])
'pwg_session_gc'
);
}
if (isset($conf['session_use_cookies']))
{
ini_set('session.use_cookies', $conf['session_use_cookies']);
}
if (isset($conf['session_use_only_cookies']))
{
ini_set('session.use_only_cookies', $conf['session_use_only_cookies']);
}
if (isset($conf['session_use_trans_sid']))
{
ini_set('session.use_trans_sid', intval($conf['session_use_trans_sid']));
}
if (isset($conf['session_name']))
{
ini_set('session.name', $conf['session_name']);
}
ini_set('session.use_cookies', $conf['session_use_cookies']);
ini_set('session.use_only_cookies', $conf['session_use_only_cookies']);
ini_set('session.use_trans_sid', intval($conf['session_use_trans_sid']));
ini_set('session.name', $conf['session_name']);
/**
* returns true; used when the session_start() function is called
*
* @params not use but useful for php engine
*/
function pwg_session_open($path, $name)
{
return true;
}
/**
* returns true; used when the session is closed (unset($_SESSION))
*
*/
function pwg_session_close()
{
pwg_session_gc();
return true;
}
/**
* this function returns
* a string corresponding to the value of the variable save in the session
* or an empty string when the variable doesn't exist
*
* @param string session id
*/
function pwg_session_read($session_id)
{
$query = '
SELECT data FROM '.SESSIONS_TABLE.'
WHERE id = \''.$session_id.'\'';
SELECT data
FROM '.SESSIONS_TABLE.'
WHERE id = \''.$session_id.'\'
;';
$result = pwg_query($query);
if ($result)
{
@ -81,46 +88,71 @@ SELECT data FROM '.SESSIONS_TABLE.'
}
}
/**
* returns true; writes set a variable in the active session
*
* @param string session id
* @data string value of date to be saved
*/
function pwg_session_write($session_id, $data)
{
$query = '
SELECT id FROM '.SESSIONS_TABLE.'
WHERE id = \''.$session_id.'\'';
SELECT id
FROM '.SESSIONS_TABLE.'
WHERE id = \''.$session_id.'\'
;';
$result = pwg_query($query);
if (mysql_num_rows($result))
{
$query = '
UPDATE '.SESSIONS_TABLE.' SET expiration = now()
WHERE id = \''.$session_id.'\'';
UPDATE '.SESSIONS_TABLE.'
SET expiration = now()
WHERE id = \''.$session_id.'\'
;';
pwg_query($query);
}
else
{
$query = '
INSERT INTO '.SESSIONS_TABLE.'(id,data,expiration)
VALUES(\''.$session_id.'\',\''.$data.'\',now())';
INSERT INTO '.SESSIONS_TABLE.'
(id,data,expiration)
VALUES(\''.$session_id.'\',\''.$data.'\',now())
;';
pwg_query($query);
}
return true;
}
/**
* returns true; delete the active session
*
* @param string session id
*/
function pwg_session_destroy($session_id)
{
$query = '
DELETE FROM '.SESSIONS_TABLE.'
WHERE id = '.$session_id;
DELETE
FROM '.SESSIONS_TABLE.'
WHERE id = \''.$session_id.'\'
;';
pwg_query($query);
return true;
}
/**
* returns true; delete expired sessions
* called each time a session is closed.
*/
function pwg_session_gc()
{
global $conf;
$query = '
DELETE FROM '.SESSIONS_TABLE.'
DELETE
FROM '.SESSIONS_TABLE.'
WHERE UNIX_TIMESTAMP(NOW()) - UNIX_TIMESTAMP(expiration) > '
.$conf['session_length'];
.$conf['session_length'].'
;';
pwg_query($query);
return true;
}