ecshop换用redis做缓存

<?php

/**
* ecshop SESSION 保存类
* ============================================================================
* 浣跨敤锛涗笉鍏佽?瀵圭▼搴忎唬鐮佷互浠讳綍褰㈠紡浠讳綍鐩?殑鐨勫啀鍙戝竷銆
* ============================================================================
* $Author: liubo $
* $Id: cls_session.php 17217 2011-01-19 06:29:08Z liubo $
*/

if (!defined('IN_ECTOUCH'))
{
die('Hacking attempt');
}

class cls_session
{
var $db = NULL;
var $session_table = '';

var $max_life_time = 1800; // SESSION 保存时间

var $session_name = '';
var $session_id = '';

var $session_expiry = '';
var $session_md5 = '';

var $session_cookie_path = '/';
var $session_cookie_domain = '';
var $session_cookie_secure = false;
var $redis='';
var $_ip = '';
var $_time = 0;

function __construct(&$db, $session_table, $session_data_table, $session_name = 'ECS_ID', $session_id = '')
{
$this->cls_session($db, $session_table, $session_data_table, $session_name, $session_id);
}

function cls_session(&$db, $session_table, $session_data_table, $session_name = 'ECS_ID', $session_id = '')
{
$this->redis = new Redis();
$this->redis->connect('127.0.0.1', 6379);
$GLOBALS['_SESSION'] = array();

if (!empty($GLOBALS['cookie_path']))
{
$this->session_cookie_path = $GLOBALS['cookie_path'];
}
else
{
$this->session_cookie_path = '/';
}

if (!empty($GLOBALS['cookie_domain']))
{
$this->session_cookie_domain = $GLOBALS['cookie_domain'];
}
else
{
$this->session_cookie_domain = '';
}

if (!empty($GLOBALS['cookie_secure']))
{
$this->session_cookie_secure = $GLOBALS['cookie_secure'];
}
else
{
$this->session_cookie_secure = false;
}

$this->session_name = $session_name;
$this->session_table = $session_table;
$this->session_data_table = $session_data_table;

$this->db = &$db;
//$this->_ip = real_ip();以下代码解决登陆问题
if(isset($_COOKIE['real_ipd']) && !empty($_COOKIE['real_ipd']))
{
$this->_ip = $_COOKIE['real_ipd'];
}
else
{
$this->_ip = real_ip();
setcookie("real_ipd", $this->_ip, time()+36000, $this->session_cookie_path);
}

if ($session_id == '' && !empty($_COOKIE[$this->session_name]))
{
$this->session_id = $_COOKIE[$this->session_name];
}
else
{
$this->session_id = $session_id;
}
if ($this->session_id)
{
$tmp_session_id = substr($this->session_id, 0, 32);
if ($this->gen_session_key($tmp_session_id) == substr($this->session_id, 32))
{
$this->session_id = $tmp_session_id;
}
else
{
$this->session_id = '';
}
}

$this->_time = time();

if ($this->session_id)
{
$this->load_session();
}
else
{
$this->gen_session_id();

setcookie($this->session_name, $this->session_id . $this->gen_session_key($this->session_id), 0, $this->session_cookie_path, $this->session_cookie_domain, $this->session_cookie_secure);
}
register_shutdown_function(array(&$this, 'close_session'));
}

function gen_session_id()
{
$this->session_id = md5(uniqid(mt_rand(), true));

return $this->insert_session();
}

function gen_session_key($session_id)
{
static $ip = '';

if ($ip == '')
{
$ip = substr($this->_ip, 0, strrpos($this->_ip, '.'));
}

return sprintf('%08x', crc32(ROOT_PATH . $ip . $session_id));
}

function load_session()
{
// $session = $this->db->getRow('SELECT userid, adminid, user_name, user_rank, discount, email, data, expiry FROM ' . $this->session_table . " WHERE sesskey = '" . $this->session_id . "'");
$session=$this->redis->get($this->session_id);
if ($session)
{
$this->insert_session();

$this->session_expiry = 0;
$this->session_md5 = '40cd750bba9870f18aada2478b24840a';
$GLOBALS['_SESSION'] = array();
}
else
{
$session=unserialize($session);
if (!empty($session['data']))
{
$this->session_expiry =$this->max_life_time;
$this->redis->expire($this->session_id,$max_life_time);
$this->session_md5 = md5($session['data']);
$GLOBALS['_SESSION'] = unserialize($session['data']);
$GLOBALS['_SESSION']['user_id'] = $session['userid'];
$GLOBALS['_SESSION']['admin_id'] = $session['adminid'];
$GLOBALS['_SESSION']['user_name'] = $session['user_name'];
$GLOBALS['_SESSION']['user_rank'] = $session['user_rank'];
$GLOBALS['_SESSION']['discount'] = $session['discount'];
$GLOBALS['_SESSION']['email'] = $session['email'];
}

}
}

function update_session()
{
$adminid = !empty($GLOBALS['_SESSION']['admin_id']) ? intval($GLOBALS['_SESSION']['admin_id']) : 0;
$userid = !empty($GLOBALS['_SESSION']['user_id']) ? intval($GLOBALS['_SESSION']['user_id']) : 0;
$user_name = !empty($GLOBALS['_SESSION']['user_name']) ? trim($GLOBALS['_SESSION']['user_name']) : 0;
$user_rank = !empty($GLOBALS['_SESSION']['user_rank']) ? intval($GLOBALS['_SESSION']['user_rank']) : 0;
$discount = !empty($GLOBALS['_SESSION']['discount']) ? round($GLOBALS['_SESSION']['discount'], 2) : 0;
$email = !empty($GLOBALS['_SESSION']['email']) ? trim($GLOBALS['_SESSION']['email']) : 0;
unset($GLOBALS['_SESSION']['admin_id']);
unset($GLOBALS['_SESSION']['user_id']);
unset($GLOBALS['_SESSION']['user_name']);
unset($GLOBALS['_SESSION']['user_rank']);
unset($GLOBALS['_SESSION']['discount']);
unset($GLOBALS['_SESSION']['email']);

$data = serialize($GLOBALS['_SESSION']);
// $this->_time = time();

// if ($this->session_md5 == md5($data) && $this->_time < $this->session_expiry + 10)
// {
// return true;
// }

$data = addslashes($data);

// if (isset($data{255}))
// {
// $this->db->autoReplace($this->session_data_table, array('sesskey' => $this->session_id, 'expiry' => $this->_time, 'data' => $data), array('expiry' => $this->_time,'data' => $data));

// $data = '';
// }
$sess=array();
//$sess["expiry"]=$this->_time;
$sess["ip"]=$this->_ip;
$sess["userid"]=$userid;
$sess["user_name"]=$user_name;
$sess["user_rank"]=$user_rank;
$sess["discount"]=$discount;
$sess["email"]=$email;
$sess["data"]=$data;
$session=serialize($sess);
$return=$this->redis->set($this->session_id, $session);
$this->redis->expire($this->session_id,$this->max_life_time);
return $return;
// return $this->db->query('UPDATE ' . $this->session_table . " SET expiry = '" . $this->_time . "', ip = '" . $this->_ip . "', userid = '" . $userid . "', adminid = '" . $adminid . "', user_name='" . $user_name . "', user_rank='" . $user_rank . "', discount='" . $discount . "', email='" . $email . "', data = '$data' WHERE sesskey = '" . $this->session_id . "' LIMIT 1");
}

function close_session()
{
$this->update_session();

/* 闅忔満瀵 sessions_data 鐨勫簱杩涜?鍒犻櫎鎿嶄綔 */
// if (mt_rand(0, 2) == 2)
// {
// $this->db->query('DELETE FROM ' . $this->session_data_table . ' WHERE expiry < ' . ($this->_time - $this->max_life_time));
// }

// if ((time() % 2) == 0)
// {
// return $this->redis->del()
// // return $this->db->query('DELETE FROM ' . $this->session_table . ' WHERE expiry < ' . ($this->_time - $this->max_life_time));
// }

return true;
}

function delete_spec_admin_session($adminid)
{
// if (!empty($GLOBALS['_SESSION']['admin_id']) && $adminid)
// {
// return $this->db->query('DELETE FROM ' . $this->session_table . " WHERE adminid = '$adminid'");
// }
// else
// {
return true;
// }
}

function destroy_session()
{
$GLOBALS['_SESSION'] = array();

setcookie($this->session_name, $this->session_id, 1, $this->session_cookie_path, $this->session_cookie_domain, $this->session_cookie_secure);

/* weifenxiao 删除购物车 */
if (!empty($GLOBALS['ecs']))
{
$this->db->query('DELETE FROM ' . $GLOBALS['ecs']->table('cart') . " WHERE session_id = '$this->session_id'");
}
/* weifenxiao 鑷?畾涔夋墽琛岄儴鍒 */

// $this->db->query('DELETE FROM ' . $this->session_data_table . " WHERE sesskey = '" . $this->session_id . "' LIMIT 1");
if (!$this->redis->exists($this->session_id)) {
return true;
}
return $this->redis->del($this->session_id);
// return $this->db->query('DELETE FROM ' . $this->session_table . " WHERE sesskey = '" . $this->session_id . "' LIMIT 1");
}

function get_session_id()
{
return $this->session_id;
}

function get_users_count()
{
return count($this->redis->key("*"));
}
}