Posted by Jerry Stuckle on 11/14/07 03:19

Rob Wilkerson wrote:
> Hey all -
>
> Not being a seasoned PHP developer, tonight I started playing with the
> use of the Singleton pattern to store configuration information. What
> I was surprised to find was that the instance - at least the one I'm
> creating - isn't really a singleton. With each request, the
> constructor is called. Isn't that very much *not* a singleton or am I
> misunderstanding or doing something wrong? I'm using a pretty simple
> case:
>
> class Config
> {
> private static $instance;
>
> private function __construct() {
> echo '<p>Constructing</p>';
> }
>
> public static function getInstance()
> {
> if (!self::$instance)
> {
> self::$instance = new self();
> }
>
> return self::$instance;
> }
> public function clear() {
> echo '<p>clearing...</p>';
> self::$instance = null;
> }
> }
>
> What am I not doing or not understanding?
>
> Any insight would be greatly appreciated.
>
> Rob
>
>

How about the code you're using to call it, Rob?

But one thing you need to be careful of - use references wherever
necessary. Otherwise it will make a copy, which calls the constructor.

--
==================
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Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attglobal.net
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