这不能在 PHP 级别而不是在 CakePHP 本身中完成吗？
所以你可以使用session_set_save_handler() (man page)以如下几种方式来实现会话存储在数据库中。以下代码来自对PHPmanual page by maria at junkies dot jp的评论，我没有专门测试过：
<?php
class Session
{
/**
* a database connection resource
* @var resource
*/
private $_sess_db;
/**
* Open the session
* @return bool
*/
public function open() {
if ($this->_sess_db = mysql_connect(SESSION_DB_HOST,
SESSION_DB_USER,
SESSION_DB_PASS)) {
return mysql_select_db(SESSION_DB_DATABASE, $this->_sess_db);
}
return false;
}
/**
* Close the session
* @return bool
*/
public function close() {
return mysql_close($this->_sess_db);
}
/**
* Close the session
* @return bool
*/
public function close() {
return mysql_close($this->_sess_db);
}
/**
* Read the session
* @param int session id
* @return string string of the sessoin
*/
public function read($id) {
$id = mysql_real_escape_string($id);
$sql = sprintf("SELECT `data` FROM `sessions` " .
"WHERE id = '%s'", $id);
if ($result = mysql_query($sql, $this->_sess_db)) {
if (mysql_num_rows($result)) {
$record = mysql_fetch_assoc($result);
return $record['data'];
}
}
return '';
}
/**
* Write the session
* @param int session id
* @param string data of the session
*/
public function write($id, $data) {
$sql = sprintf("REPLACE INTO `sessions` VALUES('%s', '%s', '%s')",
mysql_real_escape_string($id),
mysql_real_escape_string($data),
mysql_real_escape_string(time()));
return mysql_query($sql, $this->_sess_db);
}
/**
* Destoroy the session
* @param int session id
* @return bool
*/
public function destroy($id) {
$sql = sprintf("DELETE FROM `sessions` WHERE `id` = '%s'", $id);
return mysql_query($sql, $this->_sess_db);
}
/**
* Garbage Collector
* @param int life time (sec.)
* @return bool
* @see session.gc_divisor 100
* @see session.gc_maxlifetime 1440
* @see session.gc_probability 1
* @usage execution rate 1/100
* (session.gc_probability/session.gc_divisor)
*/
public function gc($max) {
$sql = sprintf("DELETE FROM `sessions` WHERE `timestamp` < '%s'",
mysql_real_escape_string(time() - $max));
return mysql_query($sql, $this->_sess_db);
}
}
//ini_set('session.gc_probability', 50);
ini_set('session.save_handler', 'user');
$session = new Session();
session_set_save_handler(array($session, 'open'),
array($session, 'close'),
array($session, 'read'),
array($session, 'write'),
array($session, 'destroy'),
array($session, 'gc'));
// below sample main
session_start();
session_regenerate_id(true);
?>
所以你可以在你的引导文件中引用它。