thinkphp3.2 session存到redis的方法

有两种方法

第一种:通过php.ini配置

在session_start()之前增加如下代码:

ini_set('session.save_handler', 'redis');ini_set('session.save_path', 'tcp://127.0.0.1:6379');

或者修改php.ini这两处为上面的值重启服务即可

第二种:通过session_set_save_handler函数

根据官方手册session驱动增加下面的驱动文件

<?php// +----------------------------------------------------------------------// | ThinkPHP [ WE CAN DO IT JUST THINK ]// +----------------------------------------------------------------------// | Copyright (c) 2006~2017 http://thinkphp.cn All rights reserved.// +----------------------------------------------------------------------// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )// +----------------------------------------------------------------------// | Author: liu21st <[e-mail]>// +----------------------------------------------------------------------namespace Think\Session\Driver;// use think\Exception;class Redis implements \SessionHandlerInterface{    /** @var \Redis */    protected $handler = null;    protected $config  = [        'host'         => '127.0.0.1', // redis主机        'port'         => 6379, // redis端口        'password'     => '', // 密码        'select'       => 0, // 操作库        'expire'       => 3600, // 有效期(秒)        'timeout'      => 0, // 超时时间(秒)        'persistent'   => true, // 是否长连接        'session_name' => 'session_', // sessionkey前缀    ];     public function __construct($config = [])     {         $this->config['host'] = C("SESSION_REDIS_HOST") ? C("SESSION_REDIS_HOST") : $this->config['host'];         $this->config['port'] = C("SESSION_REDIS_POST") ? C("SESSION_REDIS_POST") : $this->config['port'];         $this->config['password'] = C("SESSION_REDIS_PSW") ? C("SESSION_REDIS_PSW") : $this->config['password'];         $this->config['select'] = C("SESSION_REDIS_SELECT") ? C("SESSION_REDIS_SELECT") : $this->config['select'];         $this->config['expire'] = C("SESSION_REDIS_EXPIRE") ? C("SESSION_REDIS_EXPIRE") : $this->config['expire'];         $this->config['expire'] = C("SESSION_REDIS_EXPIRE") ? C("SESSION_REDIS_EXPIRE") : $this->config['expire'];         $this->config['session_name'] = C('SESSION_PREFIX') ? C('SESSION_PREFIX') : $this->config['session_name'];     }    /**     * 打开Session     * @access public     * @param string $savePath     * @param mixed  $sessName     * @return bool     * @throws Exception     */    public function open($savePath, $sessName)    {        // 检测php环境        if (!extension_loaded('redis')) {            // throw new Exception('not support:redis');            echo 'not support:redis';        }        $this->handler = new \Redis;        // 建立连接        $func = $this->config['persistent'] ? 'pconnect' : 'connect';        $this->handler->$func($this->config['host'], $this->config['port'], $this->config['timeout']);        if ('' != $this->config['password']) {            $this->handler->auth($this->config['password']);        }        if (0 != $this->config['select']) {            $this->handler->select($this->config['select']);        }        // var_dump($this->handler->get('array_category'));        return true;    }    /**     * 关闭Session     * @access public     */    public function close()    {        $this->gc(ini_get('session.gc_maxlifetime'));        $this->handler->close();        $this->handler = null;        return true;    }    /**     * 读取Session     * @access public     * @param string $sessID     * @return string     */    public function read($sessID)    {        return (string) $this->handler->get($this->config['session_name'] . $sessID);    }    /**     * 写入Session     * @access public     * @param string $sessID     * @param String $sessData     * @return bool     */    public function write($sessID, $sessData)    {        if ($this->config['expire'] > 0) {            return $this->handler->setex($this->config['session_name'] . $sessID, $this->config['expire'], $sessData);        } else {            return $this->handler->set($this->config['session_name'] . $sessID, $sessData);        }    }    /**     * 删除Session     * @access public     * @param string $sessID     * @return bool     */    public function destroy($sessID)    {        return $this->handler->delete($this->config['session_name'] . $sessID) > 0;    }    /**     * Session 垃圾回收     * @access public     * @param string $sessMaxLifeTime     * @return bool     */    public function gc($sessMaxLifeTime)    {        return true;    }}

然后修改框架的common\session函数

/** * session管理函数 * @param string|array $name session名称 如果为数组则表示进行session设置 * @param mixed $value session值 * @return mixed */function session($name='',$value='') {    $prefix   =  C('SESSION_PREFIX');    if(is_array($name)) { // session初始化 在session_start 之前调用        if(isset($name['prefix'])) C('SESSION_PREFIX',$name['prefix']);        if(C('VAR_SESSION_ID') && isset($_REQUEST[C('VAR_SESSION_ID')])){            session_id($_REQUEST[C('VAR_SESSION_ID')]);        }elseif(isset($name['id'])) {            session_id($name['id']);        }        if('common' == APP_MODE){ // 其它模式可能不支持            ini_set('session.auto_start', 0);        }        if(isset($name['name']))            session_name($name['name']);        if(isset($name['path']))            session_save_path($name['path']);        if(isset($name['domain']))          ini_set('session.cookie_domain', $name['domain']);        if(isset($name['expire']))          {            ini_set('session.gc_maxlifetime',   $name['expire']);            ini_set('session.cookie_lifetime',  $name['expire']);        }        if(isset($name['use_trans_sid']))   ini_set('session.use_trans_sid', $name['use_trans_sid']?1:0);        if(isset($name['use_cookies']))     ini_set('session.use_cookies', $name['use_cookies']?1:0);        if(isset($name['cache_limiter']))   session_cache_limiter($name['cache_limiter']);        if(isset($name['cache_expire']))    session_cache_expire($name['cache_expire']);        if(isset($name['type']))            C('SESSION_TYPE',$name['type']);        if(C('SESSION_TYPE')) { // 读取session驱动            $type   =   C('SESSION_TYPE');            $class  =   strpos($type,'\\')? $type : 'Think\\Session\\Driver\\'. ucwords(strtolower($type));            $hander =   new $class();            //注释掉源码//            session_set_save_handler(//                array(&$hander,"open"),//                array(&$hander,"close"),//                array(&$hander,"read"),//                array(&$hander,"write"),//                array(&$hander,"destroy"),//                array(&$hander,"gc"));            //这样使用            session_set_save_handler($hander,true);        }        // 启动session        if(C('SESSION_AUTO_START'))  session_start();    }elseif('' === $value){

优劣分析:

配置文件的方式快速简单,但是不够灵活,也无法在刷新页面的时候自动刷新过期时间,驱动方式改的多但是很灵活,可以自由修改各种配置参数,可以自动刷新过期时间