这里给自己做一个记录TP5 版本 thinkphp_5.0.19_with_ext
1. 创建数据库表
CREATE TABLE `session` (
`session_id` CHAR(40) NOT NULL COMMENT 'SESSION键',
`data` VARCHAR(255) NOT NULL COMMENT 'SESSION值',
`update_time` INT(10) UNSIGNED NOT NULL DEFAULT '0' COMMENT 'SESSION更新时间',
PRIMARY KEY (`session_id`),
UNIQUE KEY `session_id` (`session_id`)
) ENGINE=MEMORY DEFAULT CHARSET=utf8;2.创建DB文件
路径 /thinkphp/library/think/session/dirver/Db.php
'session', // 表名（不包含前缀）
'expire' => '3600',
];
public function __construct($config = [])
{
$this->config = array_merge($this->config, $config);
}
/**
* 打开Session
* @access public
* @param string $save_path
* @param mixed $session_name
* @return bool
*/
public function open($save_path, $session_name)
{
if ($this->config['database'] === '') {
$this->handler = \think\Db::name($this->config['table_name']);
} else {
$this->handler = \think\Db::connect($this->config['database'])->name($this->config['table_name']);
}
return true;
}
/**
* 关闭Session
* @access public
*/
public function close()
{
$this->gc(ini_get('session.gc_maxlifetime'));
$this->handler = null;
return true;
}
/**
* 读取Session
* @access public
* @param string $session_id
* @return bool|string
*/
public function read($session_id)
{
$map['session_id'] = ['eq', $this->config['prefix'] . $session_id];
if ($this->config['expire'] != 0) {
$map['update_time'] = ['gt', time() - $this->config['expire']];
}
return $this->handler->where($map)->value('data');
}
/**
* 写入Session
* @access public
* @param string $session_id
* @param String $session_data
* @return bool
*/
public function write($session_id, $session_data)
{
$result = $this->handler->where('session_id', $this->config['prefix'] . $session_id)->find();
$data = ['session_id' => $this->config['prefix'] . $session_id, 'update_time' => time(), 'data' => $session_data];
if ($result) {
$affect_rows = $this->handler->update($data);
} else {
$affect_rows = $this->handler->insert($data);
}
return $affect_rows ? true : false;
}
/**
* 删除Session
* @access public
* @param string $session_id
* @return bool
*/
public function destroy($session_id)
{
$result = $this->handler->where('session_id', $this->config['prefix'] . $session_id)->delete();
return $result ? true : false;
}
/**
* Session 垃圾回收
* @access public
* @param string $sessMaxLifeTime
* @return bool
*/
public function gc($sessMaxLifeTime)
{
if ($this->config['expire'] != 0) {
$map['update_time'] = ['lt', time() - $this->config['expire']];
} else {
$map['update_time'] = ['lt', time() - $sessMaxLifeTime];
}
$result = $this->handler->where($map)->delete();
return $result ? true : false;
}
}3.配置文件
// +----------------------------------------------------------------------
// | 会话设置
// +----------------------------------------------------------------------
'session' => [
'id' => '',
// SESSION_ID的提交变量,解决flash上传跨域
'var_session_id' => '',
// SESSION 前缀
'prefix' => 'think',
// 驱动方式 支持redis memcache memcached
'type' => 'Db',
// 是否自动开启 SESSION
'auto_start' => true,
//如果需要Session到数据库配置数据库参数
'database' => [
'type' => 'mysql',
// 服务器地址
'hostname' => '127.0.0.1',
// 数据库名
'database' => 'shop',
// 用户名
'username' => 'root',
// 密码
'password' => 'root',
// 端口
'hostport' => '3306',
],
],4.controller 使用 session
'admin','password'=>'654321'));
dump(Session::get('username'));
exit;
}
public function delSession()
{
Session::delete('username');
dump(Session::get('username'));
exit;
}
}
数据库效果
备注：因为我的数据库session表data字段长度是varchar(255),在超出长度的时候就会报错
Session启动失败，并且清空数据库的Session
所以项目中 Session 要节约点用（新手喜欢把上面都往Session中丢）。