150 lines
2.5 KiB
PHP
150 lines
2.5 KiB
PHP
<?php
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/**
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* Registry class for storing collections of data.
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*
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* @package Members
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* @subpackage Admin
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* @author Justin Tadlock <justintadlock@gmail.com>
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* @copyright Copyright (c) 2009 - 2018, Justin Tadlock
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* @link https://themehybrid.com/plugins/members
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* @license http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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*/
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namespace Members;
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/**
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* Base registry class.
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*
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* @since 2.0.0
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* @access public
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*/
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class Registry {
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/**
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* Registry instances.
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*
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* @since 2.0.0
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* @access private
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* @var array
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*/
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private static $instances = array();
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/**
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* Array of items in the collection.
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*
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* @since 2.0.0
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* @access protected
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* @var array
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*/
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protected $collection = array();
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/**
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* Constructor method.
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*
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* @since 2.0.0
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* @access protected
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* @return void
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*/
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protected function __construct() {}
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/**
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* Lock down `__clone()`.
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*
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* @since 2.0.0
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* @access private
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* @return void
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*/
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private function __clone() {}
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/**
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* Lock down `__wakeup()`.
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*
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* @since 2.0.0
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* @access private
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* @return void
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*/
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private function __wakeup() {}
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/**
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* Register an item.
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*
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* @since 2.0.0
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* @access public
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* @param string $name
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* @param mixed $value
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* @return void
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*/
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public function register( $name, $value ) {
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if ( ! $this->exists( $name ) )
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$this->collection[ $name ] = $value;
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}
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/**
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* Unregisters an item.
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*
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* @since 2.0.0
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* @access public
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* @param string $name
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* @return void
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*/
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public function unregister( $name ) {
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if ( $this->exists( $name ) )
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unset( $this->collection[ $name ] );
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}
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/**
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* Checks if an item exists.
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*
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* @since 2.0.0
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* @access public
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* @param string $name
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* @return bool
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*/
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public function exists( $name ) {
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return isset( $this->collection[ $name ] );
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}
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/**
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* Returns an item.
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*
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* @since 2.0.0
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* @access public
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* @param string $name
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* @return mixed
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*/
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public function get( $name ) {
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return $this->exists( $name ) ? $this->collection[ $name ] : false;
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}
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/**
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* Returns the entire collection.
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*
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* @since 2.0.0
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* @access public
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* @return array
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*/
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public function get_collection() {
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return $this->collection;
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}
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/**
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* Returns the instance.
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*
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* @since 2.0.0
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* @access public
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* @return object
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*/
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final public static function get_instance( $name = '' ) {
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if ( ! isset( self::$instances[ $name ] ) )
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self::$instances[ $name ] = new static();
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return self::$instances[ $name ];
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}
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}
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