php session 自定义的设置测试

浏览数：19 / 时间：2015年06月09日

<?php
 // ini_set(‘session.save_handler‘, ‘user‘);

 // 注意 set_session_save_handler() 一定要在 session_start()前执行
 // session.gc_probability =1 //session 回收机制的概率分子
 // session.gc_divisor = 1000 // session 回收机制的概率分母
 // session.gc_maxlifetime = 1440 // session 有效期
 // 当开启 session 时，如 session_start(),
 // 执行顺序为 sess_open() -> sess_read()->sess_write() -> sess_close() ->sess_destroy() -> sess_gc()

ini_set("session.save_handler", "user"); // 自定义保存方式

function sess_open($sess_path, $sess_name)
{
 echo "session 路径：" . $sess_path . " ";
 echo "session名称：" . $sess_name . " ";
 return true;
}

function sess_close()
{
 echo "session 关闭 ";
 return true;
}

function sess_read($sess_id)
{
 echo "读取session id ：" . $sess_id . " ";
 return true;
}

function sess_write($sess_id, $data)
{
 echo "写入数据 session id " . $sess_id . " ";
 echo "session 数据 " . $data . " ";
 return true;
}

function sess_destroy($sess_id)
{
 echo "销毁 session id " . $sess_id . " ";
 return true;
}

function sess_gc($sess_maxlifetime)
{
 echo "session 回时机制，每隔时间为 " . $sess_maxlifetime;
 return true;
}

session_set_save_handler("sess_open", "sess_close", "sess_read", "sess_write", "sess_destroy", "sess_gc");
session_start();
$_SESSION[‘lin‘] = ‘lin3615‘;
echo ‘hi, world ‘;
$_SESSION[‘long‘] = ‘good luck for you‘;
// 开启 cookie 时，默认时会以 session 名称 PHPSESSID 为了cookie 为记录
// 如 $_COOKIE[‘PHPSESSID‘] = session_id; 值即为session_id值
print_r($_COOKIE);

// 以下为保存在数据库中

<?php

数据库为 test

数据表结构

CREATE TABLE `ws_sessions` (
`session_id` varchar(255) NOT NULL default ‘‘,
`session_expires` int(11) unsigned NOT NULL default ‘0‘,
`session_data` text,
PRIMARY KEY (`session_id`)
)

class session
{
 public $lifeTime;
 public $dbHandler;

 function open($savePath, $sessName)
 {
 $this->lifeTime = get_cfg_var("session.gc_maxlifetime");
 $dbHandler = mysql_connect(‘localhost‘, ‘root‘, ‘rootlin3615‘);
 $dbSel = mysql_select_db(‘test‘, $dbHandler);
 if(!$dbHandler || !$dbSel)
 return false;
 $this->dbHandler = $dbHandler;
 return true;
 }

 function close()
 {
 $this->gc(ini_get("session.gc_maxlifetime"));
 return mysql_close($this->dbHandler);
 }

 function read($sessID)
 {
 $res = mysql_query("select session_data as d from ws_sessions
 where session_id=‘{$sessID}‘
 and session_expires > " . time(), $this->dbHandler);
 if($row = mysql_fetch_assoc($res))
 return $row[‘d‘];
 return ‘‘;
 }

 function write($sessID, $sessData)
 {
 $newExp = time()+$this->lifeTime;
 $res = mysql_query("select * from ws_sessions
 where session_id=‘{$sessID}‘", $this->dbHandler);

 if(mysql_num_rows($res))
 {
 mysql_query("update ws_sessions set session_data = ‘{$sessData}‘",$this->dbHandler);
 if(mysql_affected_rows($this->dbHandler))
 return true;
 }else
 {
 mysql_query("insert into ws_sessions (
 session_id, session_expires, session_data)
 values(‘{$sessID}‘, ‘{$newExp}‘, ‘{$sessData}‘)", $this->dbHandler);
 if(mysql_affected_rows($this->dbHandler))
 return true;
 }
 return false;
 }

 function destroy($sessID)
 {
 mysql_query("delete from ws_sessions where session_id = ‘{$sessID}‘", $this->dbHandler);
 if(mysql_affacted_rows($this->dbHandle))
 return true;
 return false;
 }

 function gc($sessMaxLifeTime)
 {
 mysql_query("delete from ws_sessions where session_expires < " . time(), $this->dbHandler);
 return mysql_affected_rows($this->dbHandler);
 }
}
ini_set("seession.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"));
session_start();