mirror of
https://github.com/yiisoft/yii2.git
synced 2025-11-04 06:37:55 +08:00
42 lines
1.1 KiB
PHP
42 lines
1.1 KiB
PHP
<?php
|
|
/**
|
|
* @link https://www.yiiframework.com/
|
|
* @copyright Copyright (c) 2008 Yii Software LLC
|
|
* @license https://www.yiiframework.com/license/
|
|
*/
|
|
|
|
namespace yii\base;
|
|
|
|
use Yii;
|
|
|
|
/**
|
|
* StaticInstanceTrait provides methods to satisfy [[StaticInstanceInterface]] interface.
|
|
*
|
|
* @see StaticInstanceInterface
|
|
*
|
|
* @author Paul Klimov <klimov.paul@gmail.com>
|
|
* @since 2.0.13
|
|
*/
|
|
trait StaticInstanceTrait
|
|
{
|
|
/**
|
|
* @var static[] static instances in format: `[className => object]`
|
|
*/
|
|
private static $_instances = [];
|
|
|
|
|
|
/**
|
|
* Returns static class instance, which can be used to obtain meta information.
|
|
* @param bool $refresh whether to re-create static instance even, if it is already cached.
|
|
* @return static class instance.
|
|
*/
|
|
public static function instance($refresh = false)
|
|
{
|
|
$className = get_called_class();
|
|
if ($refresh || !isset(self::$_instances[$className])) {
|
|
self::$_instances[$className] = Yii::createObject($className);
|
|
}
|
|
return self::$_instances[$className];
|
|
}
|
|
}
|