thinkphp/library/think/Container.php

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<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006~2018 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------

namespace think;

use ArrayAccess;
use ArrayIterator;
use Closure;
use Countable;
use InvalidArgumentException;
use IteratorAggregate;
use ReflectionClass;
use ReflectionException;
use ReflectionFunction;
use ReflectionMethod;
use think\exception\ClassNotFoundException;

/**
 * @package think
 * @property Build          $build
 * @property Cache          $cache
 * @property Config         $config
 * @property Cookie         $cookie
 * @property Debug          $debug
 * @property Env            $env
 * @property Hook           $hook
 * @property Lang           $lang
 * @property Middleware     $middleware
 * @property Request        $request
 * @property Response       $response
 * @property Route          $route
 * @property Session        $session
 * @property Template       $template
 * @property Url            $url
 * @property Validate       $validate
 * @property View           $view
 * @property route\RuleName $rule_name
 * @property Log            $log
 */
class Container implements ArrayAccess, IteratorAggregate, Countable
{
    /**
     * 容器对象实例
     * @var Container
     */
    protected static $instance;

    /**
     * 容器中的对象实例
     * @var array
     */
    protected $instances = [];