50 lines
727 B
PHP
50 lines
727 B
PHP
<?php
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/**
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* Singleton class trait.
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*
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* @package WooCommerce\Utilities
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*/
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namespace Automattic\WooCommerce\RestApi\Utilities;
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/**
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* Singleton trait.
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*/
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trait SingletonTrait {
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/**
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* The single instance of the class.
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*
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* @var object
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*/
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protected static $instance = null;
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/**
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* Constructor
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*
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* @return void
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*/
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protected function __construct() {}
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/**
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* Get class instance.
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*
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* @return object Instance.
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*/
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final public static function instance() {
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if ( null === static::$instance ) {
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static::$instance = new static();
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}
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return static::$instance;
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}
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/**
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* Prevent cloning.
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*/
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private function __clone() {}
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/**
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* Prevent unserializing.
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*/
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private function __wakeup() {}
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}
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