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<?php
/**
* An abstract base class to make Singleton class
*
* @package Tutor\Classes
* @author Themeum <support@themeum.com>
* @link https://themeum.com
* @since 3.0.0
*/
namespace TUTOR;
if ( ! defined( 'ABSPATH' ) ) {
exit;
}
/**
* Class Singleton
*/
abstract class Singleton {
/**
* Store instances for each child class.
*
* @var array
*/
private static $instances = array();
/**
* Constructor prevent for new instance.
*
* @access protected
*/
protected function __construct() { }
/**
* Prevent object clone
*
* @access protected
*/
protected function __clone() { }
/**
* Get instance of class.
*
* @return static
*/
public static function get_instance() {
$class = static::class;
if ( ! isset( self::$instances[ $class ] ) ) {
self::$instances[ $class ] = new static();
}
return self::$instances[ $class ];
}
/**
* Reset a class instance
*
* @return void
*/
public static function reset_instance() {
$class = static::class;
if ( isset( self::$instances[ $class ] ) ) {
unset( self::$instances[ $class ] );
}
}
}
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