terrylinooo
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<?php
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/**
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* This file is part of the Shieldon package.
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*
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* (c) Terry L. <contact@terryl.in>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*
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* php version 7.1.0
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*
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* @category Web-security
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* @package Shieldon
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* @author Terry Lin <contact@terryl.in>
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* @copyright 2019 terrylinooo
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* @license https://github.com/terrylinooo/shieldon/blob/2.x/LICENSE MIT
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* @link https://github.com/terrylinooo/shieldon
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* @see https://shieldon.io
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*/
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declare(strict_types=1); |
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namespace Shieldon\Firewall; |
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/**
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* This is a very, very simple container.
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* For storing Shieldon releated instances and variables..
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*/
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class Container |
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{
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/**
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* The container.
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*
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* @var array
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*/
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private static $instances = []; |
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/**
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* Find an entry of the container by its identifier and returns it.
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*
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* @param string $id Identifier of the entry to look for.
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*
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* @return mixed Entry.
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*/
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public static function get(string $id) |
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{
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if (self::has($id)) { |
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return self::$instances[$id]; |
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}
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return null; |
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}
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/**
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* Return true if the container can return an entry for the given identifier.
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* Return false otherwise.
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*
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* @param string $id Identifier of the entry to look for.
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*
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* @return bool
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*/
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public static function has(string $id): bool |
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{
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return isset(self::$instances[$id]); |
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}
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/**
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* Set an entry into container.
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*
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* @param object $id Identifier of the entry to look for.
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* @param mixed $entry Entry.
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* @param bool $overwrite Overwrite it even exists.
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*
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* @return void
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*/
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public static function set(string $id, $entry, bool $overwrite = true): void |
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{
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if (!self::has($id) || $overwrite) { |
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self::$instances[$id] = $entry; |
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}
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}
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/**
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* Unset an entry of the Container.
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*
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* @param string $id Identifier of the entry to look for.
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*
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* @return void
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*/
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public static function remove(string $id): void |
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{
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if (self::has($id)) { |
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self::$instances[$id] = null; |
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unset(self::$instances[$id]); |
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}
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}
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}
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