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mnapoli/optional singleton pattern.php

Last active December 15, 2015 07:09
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"Optional singleton" pattern
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optional singleton pattern.php
<?php
// See also http://en.mnapoli.fr/the-optional-singleton-pattern/
class MyService
{
private static $singletonInstance = null;
/**
* Keep the constructor public
*/
public function __construct() {
}
/**
* Returns an instance of the class (Singleton design pattern)
* @return MyService
*/
public static function getInstance() {
if (self::$singletonInstance === null) {
self::$singletonInstance = new self();
}
return self::$singletonInstance;
}
}
// Singleton usage
$myService = MyService::getInstance();
// Classic usage
$myService = new MyService();
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