note 60316 modified in function.session-set-save-handler by bjori
| From: | bjori@php.net | Date: | Tue, 28 Mar 2006 13:04:12 +0000 |
| Subject: | note 60316 modified in function.session-set-save-handler by bjori | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-106843@lists.php.net to get a copy of this message | ||
object- and mysql-based session-handler, requires the following table:
CREATE TABLE
ws_sessions (
session_id varchar(255) binary NOT NULL default '',
session_expires int(10) unsigned NOT NULL default '0',
session_data text,
PRIMARY KEY (session_id)
) TYPE=InnoDB;
<?php
class session {
// session-lifetime
var $lifeTime;
// mysql-handle
var $dbHandle;
function open($savePath, $sessName) {
// get session-lifetime
$this->lifeTime = get_cfg_var("session.gc_maxlifetime");
// open database-connection
$dbHandle = @mysql_connect("server","user","password");
$dbSel = @mysql_select_db("database",$dbHandle);
// return success
if(!$dbHandle || !$dbSel)
return false;
$this->dbHandle = $dbHandle;
return true;
}
function close() {
$this->gc(ini_get('session.gc_maxlifetime'));
// close database-connection
return @mysql_close($this->dbHandle);
}
function read($sessID) {
// fetch session-data
$res = mysql_query("SELECT session_data AS d FROM ws_sessions
WHERE session_id = '$sessID'
AND session_expires > ".time(),$this->dbHandle);
// return data or an empty string at failure
if($row = mysql_fetch_assoc($res))
return $row['d'];
return "";
}
function write($sessID,$sessData) {
// new session-expire-time
$newExp = time() + $this->lifeTime;
// is a session with this id in the database?
$res = mysql_query("SELECT * FROM ws_sessions
WHERE session_id = '$sessID'",$this->dbHandle);
// if yes,
if(mysql_num_rows($res)) {
// ...update session-data
mysql_query("UPDATE ws_sessions
SET session_expires = '$newExp',
session_data = '$sessData'
WHERE session_id = '$sessID'",$this->dbHandle);
// if something happened, return true
if(mysql_affected_rows($this->dbHandle))
return true;
}
// if no session-data was found,
else {
// create a new row
mysql_query("INSERT INTO ws_sessions (
session_id,
session_expires,
session_data)
VALUES(
'$sessID',
'$newExp',
'$sessData')",$this->dbHandle);
// if row was created, return true
if(mysql_affected_rows($this->dbHandle))
return true;
}
// an unknown error occured
return false;
}
function destroy($sessID) {
// delete session-data
mysql_query("DELETE FROM ws_sessions WHERE session_id =
'$sessID'",$this->dbHandle);
// if session was deleted, return true,
if(mysql_affected_rows($this->dbHandle))
return true;
// ...else return false
return false;
}
function gc($sessMaxLifeTime) {
// delete old sessions
mysql_query("DELETE FROM ws_sessions WHERE session_expires <
".time(),$this->dbHandle);
// return affected rows
return mysql_affected_rows($this->dbHandle);
}
}
$session = new session();
session_set_save_handler(array(&$session,"open"),
array(&$session,"close"),
array(&$session,"read"),
array(&$session,"write"),
array(&$session,"destroy"),
array(&$session,"gc"));
session_start();
// etc...
?>
--was--
object- and mysql-based session-handler, requires the following table:
CREATE TABLE ws_sessions (
session_id varchar(255) binary NOT NULL default '',
session_expires int(10) unsigned NOT NULL default '0',
session_data text,
PRIMARY KEY (session_id)
) TYPE=InnoDB;
<?php
class session {
// session-lifetime
var $lifeTime;
// mysql-handle
var $dbHandle;
function open($savePath, $sessName) {
// get session-lifetime
$this->lifeTime = get_cfg_var("session.gc_maxlifetime");
// open database-connection
$dbHandle = @mysql_connect("server","user","password");
$dbSel = @mysql_select_db("database",$dbHandle);
// return success
if(!$dbHandle || !$dbSel)
return false;
return true;
}
function close() {
// close database-connection
return @mysql_close($this->dbHandle);
}
function read($sessID) {
// fetch session-data
$res = mysql_query("SELECT session_data AS d FROM ws_sessions
WHERE session_id = '$sessID'
AND session_expires > ".time(),$this->dbHandle);
// return data or an empty string at failure
if($row = mysql_fetch_assoc($res))
return $row['d'];
return "";
}
function write($sessID,$sessData) {
// new session-expire-time
$newExp = time() + $this->lifeTime;
// is a session with this id in the database?
$res = mysql_query("SELECT * FROM ws_sessions
WHERE session_id = '$sessID'",$this->dbHandle);
// if yes,
if(mysql_num_rows($res)) {
// ...update session-data
mysql_query("UPDATE ws_sessions
SET session_expires = '$newExp',
session_data = '$sessData'
WHERE session_id = '$sessID'",$this->dbHandle);
// if something happened, return true
if(mysql_affected_rows($this->dbHandle))
return true;
}
// if no session-data was found,
else {
// create a new row
mysql_query("INSERT INTO ws_sessions (
session_id,
session_expires,
session_data)
VALUES(
'$sessID',
'$newExp',
'$sessData')",$this->dbHandle);
// if row was created, return true
if(mysql_affected_rows($this->dbHandle))
return true;
}
// an unknown error occured
return false;
}
function destroy($sessID) {
// delete session-data
mysql_query("DELETE FROM ws_sessions WHERE session_id =
'$sessID'",$this->dbHandle);
// if session was deleted, return true,
if(mysql_affected_rows($this->dbHandle))
return true;
// ...else return false
return false;
}
function gc($sessMaxLifeTime) {
// delete old sessions
mysql_query("DELETE FROM ws_sessions WHERE session_expires <
".time(),$this->dbHandle);
// return affected rows
return mysql_affected_rows($this->dbHandle);
}
}
$session = new session();
session_set_save_handler(array(&$session,"open"),
array(&$session,"close"),
array(&$session,"read"),
array(&$session,"write"),
array(&$session,"destroy"),
array(&$session,"gc"));
session_start();
// etc...
?>
http://php.net/manual/en/function.session-set-save-handler.php