thinkphp3.2 session存到redis的方法

有兩種方法

第一種:通過php.ini配置

在session_start()之前增加如下代碼:

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

或者修改php.ini這兩處爲上面的值重啓服務即可

第二種:通過session_set_save_handler函數

根據官方手冊session驅動增加下面的驅動文件

<?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 <[email protected]>
// +----------------------------------------------------------------------
namespace Think\Session\Driver;
// use think\Exception;
class Redis implements \SessionHandlerInterface
{
    /** @var \Redis */
    protected $handler = null;
    protected $config  = [
        'host'         => '127.0.0.1', // redis主機
        'port'         => 6379, // redis端口
        'password'     => '', // 密碼
        'select'       => 0, // 操作庫
        'expire'       => 3600, // 有效期(秒)
        'timeout'      => 0, // 超時時間(秒)
        'persistent'   => true, // 是否長連接
        'session_name' => 'session_', // sessionkey前綴
    ];
     public function __construct($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'];

     }
    /**
     * 打開Session
     * @access public
     * @param string $savePath
     * @param mixed  $sessName
     * @return bool
     * @throws Exception
     */
    public function open($savePath, $sessName)
    {
        // 檢測php環境
        if (!extension_loaded('redis')) {
            // throw new Exception('not support:redis');
            echo 'not support:redis';
        }
        $this->handler = new \Redis;
        // 建立連接
        $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;
    }
    /**
     * 關閉Session
     * @access public
     */
    public function close()
    {
        $this->gc(ini_get('session.gc_maxlifetime'));
        $this->handler->close();
        $this->handler = null;
        return true;
    }
    /**
     * 讀取Session
     * @access public
     * @param string $sessID
     * @return string
     */
    public function read($sessID)
    {
        return (string) $this->handler->get($this->config['session_name'] . $sessID);
    }
    /**
     * 寫入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);
        }
    }
    /**
     * 刪除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;
    }
}

然後修改框架的common\session函數

/**
 * session管理函數
 * @param string|array $name session名稱 如果爲數組則表示進行session設置
 * @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 之前調用
        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')) { // 讀取session驅動
            $type   =   C('SESSION_TYPE');
            $class  =   strpos($type,'\\')? $type : 'Think\\Session\\Driver\\'. ucwords(strtolower($type));
            $hander =   new $class();
            //註釋掉源碼
//            session_set_save_handler(
//                array(&$hander,"open"),
//                array(&$hander,"close"),
//                array(&$hander,"read"),
//                array(&$hander,"write"),
//                array(&$hander,"destroy"),
//                array(&$hander,"gc"));
            //這樣使用
            session_set_save_handler($hander,true);
        }
        // 啓動session
        if(C('SESSION_AUTO_START'))  session_start();
    }elseif('' === $value){

優劣分析:

配置文件的方式快速簡單,但是不夠靈活,也無法在刷新頁面的時候自動刷新過期時間,驅動方式改的多但是很靈活,可以自由修改各種配置參數,可以自動刷新過期時間