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Merge pull request #35 from olekhy/patch-1

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use static class property instead of static variable for Singleton
This commit is contained in:
Dominik Liebler
2013-09-21 15:10:07 -07:00
parent 9e624afc26 52ef48fd28
commit 3d8098c5e4
1 changed files with 9 additions and 5 deletions
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14
Singleton/Singleton.php
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@@ -19,6 +19,11 @@ namespace DesignPatterns\Singleton;
*/ */
class Singleton class Singleton
{ {
/**
* @var cached reference to singleton instance
*/
protected static $instance;
/** /**
* gets the instance via lazy initialization (created on first usage) * gets the instance via lazy initialization (created on first usage)
* *
@@ -26,13 +31,12 @@ class Singleton
*/ */
public static function getInstance() public static function getInstance()
{ {
static $instance;
if (null === static::$instance) {
if (null === $instance) { static::$instance = new static;
$instance = new self();
} }
return $instance; return static::$instance;
} }
/** /**