CHIEFSOFT\ameye
82 lines
1.9 KiB
PHP
82 lines
1.9 KiB
PHP
<?php
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/**
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* @file classes/core/Registry.php
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*
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* Copyright (c) 2014-2021 Simon Fraser University
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* Copyright (c) 2000-2021 John Willinsky
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* Distributed under the GNU GPL v3. For full terms see the file docs/COPYING.
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*
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* @class Registry
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*
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* @ingroup core
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*
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* @brief Maintains a static table of keyed references.
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* Used for storing/accessing single instance objects and values.
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*/
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namespace PKP\core;
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class Registry
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{
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/**
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* Get a static reference to the registry data structure.
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*
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*/
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public static function &_getRegistry(): array
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{
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static $registry = [];
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return $registry;
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}
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/**
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* Get the value of an item in the registry (optionally setting a default).
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*
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* @param bool $createIfEmpty Whether or not to create an entry if none exists
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* @param mixed $default If $createIfEmpty, this value will be used as a default
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*/
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public static function &get(string $key, bool $createIfEmpty = false, mixed $default = null): mixed
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{
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$registry = & self::_getRegistry();
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if (isset($registry[$key])) {
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return $registry[$key];
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}
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if ($createIfEmpty) {
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self::set($key, $default);
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}
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return $default;
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}
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/**
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* Set the value of an item in the registry.
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*/
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public static function set(string $key, mixed &$value): void
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{
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$registry = & self::_getRegistry();
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$registry[$key] = & $value;
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}
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/**
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* Remove an item from the registry.
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*/
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public static function delete(string $key): void
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{
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$registry = & self::_getRegistry();
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if (isset($registry[$key])) {
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unset($registry[$key]);
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}
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}
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/**
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* Clear the registry of all contents.
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*/
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public static function clear(): void
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{
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$registry = & self::_getRegistry();
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foreach (array_keys($registry) as $key) {
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unset($registry[$key]);
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}
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}
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}
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