Static class initializer in PHP

Question

I have an helper class with some static functions. All the functions in the class require a ‘heavy’ initialization function to run once (as if it were a constructor).

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Answer 1

Note - the RFC proposing this is still in the draft state.

---

class Singleton
{
    private static function __static()
    {
        //...
    }
    //...
}

proposed for PHP 7.x (see https://wiki.php.net/rfc/static_class_constructor )