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optimization: in sessions write 1 less sql query (except during login)

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bug: corrected algorithm for pretty calendar month view

git-svn-id: http://piwigo.org/svn/trunk@1063 68402e56-0260-453c-a942-63ccdbb3a9ee
This commit is contained in:
rvelices
2006-03-03 04:32:21 +00:00
parent 2a3d501213
commit c4874071ba
2 changed files with 31 additions and 39 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/functions_session.inc.php
+28 -37
View File
@@ -54,11 +54,11 @@ function generate_key($size)
return $key;
}
if (isset($conf['session_save_handler'])
if (isset($conf['session_save_handler'])
and ($conf['session_save_handler'] == 'db')
and defined('PHPWG_INSTALLED'))
and defined('PHPWG_INSTALLED'))
{
session_set_save_handler('pwg_session_open',
session_set_save_handler('pwg_session_open',
'pwg_session_close',
'pwg_session_read',
'pwg_session_write',
@@ -79,7 +79,7 @@ if (isset($conf['session_save_handler'])
function cookie_path()
{
if ( isset($_SERVER['REDIRECT_URL']) )
{ // mod_rewrite is activated for upper level directories. we must set the
{ // mod_rewrite is activated for upper level directories. we must set the
// cookie to the path shown in the browser otherwise it will be discarded.
$scr = $_SERVER['REDIRECT_URL'];
}
@@ -95,7 +95,7 @@ function cookie_path()
*
* @params not use but useful for php engine
*/
function pwg_session_open($path, $name)
function pwg_session_open($path, $name)
{
return true;
}
@@ -104,82 +104,73 @@ function pwg_session_open($path, $name)
* returns true; used when the session is closed (unset($_SESSION))
*
*/
function pwg_session_close()
function pwg_session_close()
{
return true;
}
/**
* this function returns
* a string corresponding to the value of the variable save in the session
* 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($session_id)
function pwg_session_read($session_id)
{
$query = '
SELECT data
SELECT data
FROM '.SESSIONS_TABLE.'
WHERE id = \''.$session_id.'\'
;';
$result = pwg_query($query);
if ($result)
if ($result)
{
$row = mysql_fetch_assoc($result);
return $row['data'];
}
else
}
else
{
return '';
}
}
/**
* returns true; writes set a variable in the active session
*
* returns true; writes set a variable in the active session
*
* @param string session id
* @data string value of date to be saved
*/
function pwg_session_write($session_id, $data)
function pwg_session_write($session_id, $data)
{
$query = '
SELECT id
FROM '.SESSIONS_TABLE.'
WHERE id = \''.$session_id.'\'
;';
$result = pwg_query($query);
if (mysql_num_rows($result))
{
$query = '
UPDATE '.SESSIONS_TABLE.'
UPDATE '.SESSIONS_TABLE.'
SET expiration = now(),
data = \''.$data.'\'
WHERE id = \''.$session_id.'\'
;';
pwg_query($query);
}
else
;';
pwg_query($query);
if ( mysql_affected_rows()==0 )
{
$query = '
INSERT INTO '.SESSIONS_TABLE.'
INSERT INTO '.SESSIONS_TABLE.'
(id,data,expiration)
VALUES(\''.$session_id.'\',\''.$data.'\',now())
;';
pwg_query($query);
pwg_query($query);
}
return true;
}
/**
* returns true; delete the active session
*
* returns true; delete the active session
*
* @param string session id
*/
function pwg_session_destroy($session_id)
function pwg_session_destroy($session_id)
{
$query = '
DELETE
DELETE
FROM '.SESSIONS_TABLE.'
WHERE id = \''.$session_id.'\'
;';
@@ -191,12 +182,12 @@ DELETE
* returns true; delete expired sessions
* called each time a session is closed.
*/
function pwg_session_gc()
function pwg_session_gc()
{
global $conf;
$query = '
DELETE
DELETE
FROM '.SESSIONS_TABLE.'
WHERE UNIX_TIMESTAMP(NOW()) - UNIX_TIMESTAMP(expiration) > '
.$conf['session_length'].'