vendor/topthink/framework/src/think/cache/Driver.php

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<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006~2021 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
declare (strict_types = 1);

namespace think\cache;

use Closure;
use DateInterval;
use DateTime;
use DateTimeInterface;
use Exception;
use Psr\SimpleCache\CacheInterface;
use think\Container;
use think\contract\CacheHandlerInterface;
use think\exception\InvalidArgumentException;
use throwable;

/**
 * 缓存基础类
 */
abstract class Driver implements CacheInterface, CacheHandlerInterface
{
    /**
     * 驱动句柄
     * @var object
     */
    protected $handler = null;

    /**
     * 缓存读取次数
     * @var integer
     */
    protected $readTimes = 0;

    /**
     * 缓存写入次数
     * @var integer
     */
    protected $writeTimes = 0;

    /**
     * 缓存参数
     * @var array
     */
    protected $options = [];

    /**
     * 缓存标签
     * @var array
     */
    protected $tag = [];