Re: abstract static function

Sorry, I've forgotten the "extends" keywords in the example codes: <?php abstract class Dispatcher { abstract public static function dispatch(); public static function exampleMethod() {

       ...

} } final class ActionDispatcher extends Dispatcher { public static function dispatch() {

       parent::exampleMethod();
       // other code...

} } final class AjaxDispatcher extends Dispatcher { public static function dispatch() {

       parent::exampleMethod();
       // other code...

} } ?> 2007/4/5, Jingcheng Zhang <diogin@gmail.com>:

Hi internals,

    I used to use abstract static function prior to php 5.2, because when

I consider static class as a singleton, I can use abstract static function to delay the implementation of some methods to the derived classes. This happens, for example, when I declare a parent dispatcher, and extend it into two classes - action dispatcher and ajax dispatcher - and declare them static as I want to keep them a singleton because they are just application models, not domain models: <?php abstract class Dispatcher {

    abstract public static function dispatch();
    public static function exampleMethod() {
        ...
    }

} final class ActionDispatcher {

    public static function dispatch() {
        parent::exampleMethod();
        // other code...
    }

} final class AjaxDispatcher {

    public static function dispatch() {
        parent::exampleMethod();
        // other code...
    }

} ?>

    Unfortunately, since php 5.2, although it does still allow declaring

static methods in an interface, it simply generates a message when declaring abstract static functions with error_reporting set to E_ALL | E_STRICT.

    PHP is a dynamic language, not static as C++ and Java. So, why not

allow abstract static functions? It is also a good way to support singleton natively.

    Waiting for explanations. Thanks :)

-- Best regards, Jingcheng Zhang Room 304, Dormitory 26 of Yuquan Campus, Zhejiang University P.R.China

-- Best regards, Jingcheng Zhang Room 304, Dormitory 26 of Yuquan Campus, Zhejiang University P.R.China