PHP设置session保存到redis中

通过设置php.ini

session.save_handler=redis
session.save_path="tcp://xxx.rds.aliyuncs.com:6379?auth=redis密码"

验证是否成功 新建测试文件test.php

session_start();
$_SESSION['username'] = "bianpeijiang"

访问 curl -I http://localhost/test.php

HTTP/1.1 200 OK
Date: Fri, 20 Jan 2017 08:50:38 GMT
Server: Apache
Set-Cookie: PHPSESSID=tgt25hi24qfjs2f289941g8pm0; path=/
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Vary: Accept-Encoding
Content-Type: text/html; charset=UTF-8

连接redis查看

> get "PHPREDIS_SESSION:tgt25hi24qfjs2f289941g8pm0"
"username|s:12:\"bianpeijiang\";"

通过实现SessionHandlerInterface 接口自定义session存储

<?php
class MySessionHandler implements SessionHandlerInterface
{
    private $savePath;

    public function open($savePath, $sessionName)
    {
        $this->savePath = $savePath;
        if (!is_dir($this->savePath)) {
            mkdir($this->savePath, 0777);
        }

        return true;
    }

    public function close()
    {
        return true;
    }

    public function read($id)
    {
        return (string)@file_get_contents("$this->savePath/sess_$id");
    }

    public function write($id, $data)
    {
        return file_put_contents("$this->savePath/sess_$id", $data) === false ? false : true;
    }

    public function destroy($id)
    {
        $file = "$this->savePath/sess_$id";
        if (file_exists($file)) {
            unlink($file);
        }

        return true;
    }

    public function gc($maxlifetime)
    {
        foreach (glob("$this->savePath/sess_*") as $file) {
            if (filemtime($file) + $maxlifetime < time() && file_exists($file)) {
                unlink($file);
            }
        }

        return true;
    }
}

$handler = new MySessionHandler();
session_set_save_handler($handler, true);
session_start();