Building a Singleton Trait with PHP 5.4

Question

We recently had a discussion if it was possible to build a trait Singleton PHP Traits and we played around with it a possible Implementation but ran into issues

Answer 1

This is guys all what you need. If you wish you could use private static member, but there is no a real need... Tested, works despite the fact that you might think that static will be global or something :)

trait Singleton
{
    /**
     * Singleton pattern implementation
     * @return mixed
     */
    public static function Instance()
    {
        static $instance = null;
        if (is_null($instance)) {
            $instance = new self();
        }
        return $instance;
    }
}

usage:

class MyClass
{
 use Singleton;
}