wpfunnels / includes / core / traits / singleton-trait.php

singleton-trait.php in WPFunnels – Funnel Builder for WooCommerce with Checkout & One Click Upsell 3.13.1, at includes/core/traits/singleton-trait.php

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1	<?php
2	/**
3	* Singleton trait
4	*
5	* @package WPFunnels\Traits
6	*/
7	namespace WPFunnels\Traits;
8
9	trait SingletonTrait {
10
11	private static $instance;
12
13	protected function __construct() {}
14
15	/**
16	* Get class instance.
17	*
18	* @return object Instance.
19	*/
20	public static function getInstance() {
21	if (!self::$instance) {
22	// new self() will refer to the class that uses the trait
23	self::$instance = new self();
24	}
25
26	return self::$instance;
27	}
28
29	/**
30	* Prevent cloning.
31	*/
32	public function __clone() {}
33
34
35	public function __wakeup() {
36	wc_doing_it_wrong( __FUNCTION__, __( 'Unserializing instances of this class is forbidden.', 'wpfnl' ), '4.6' );
37	die();
38	}
39	}
40