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