vendor/topthink/think-orm/src/DbManager.php

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<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006~2019 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;

use InvalidArgumentException;
use Psr\Log\LoggerInterface;
use Psr\SimpleCache\CacheInterface;
use think\db\BaseQuery;
use think\db\ConnectionInterface;
use think\db\Query;
use think\db\Raw;

/**
 * Class DbManager
 * @package think
 * @mixin BaseQuery
 * @mixin Query
 */
class DbManager
{
    /**
     * 数据库连接实例
     * @var array
     */
    protected $instance = [];

    /**
     * 数据库配置
     * @var array
     */
    protected $config = [];

    /**
     * Event对象或者数组
     * @var array|object
     */
    protected $event;

    /**
     * SQL监听
     * @var array
     */
    protected $listen = [];

    /**
     * SQL日志
     * @var array
     */
    protected $dbLog = [];