class defined as static member of another class

Question

I do this type of thing in Java all the time, and I'm trying to figure out if it's possible in PHP. This is what I would expect the syntax to look like if it was possible, but I'm wondering if there's some special way to do it (if it's possible, that is).

class Foo { public static class FooBarException extends Exception { } public static class BarBazException extends Exception { } public function DoSomething() { try { // Calls to other class methods that can // throw FooBarException and BarBazException } catch (self::FooBarException $e) { // Stuff.. } } } $bang = new Foo(); try { $bang->DoSomething(); } catch (Foo::BarBazException $e) { // Stuff.. }

As an aside, I forgot if there's an actual name for doing this, in any language. I thought it was "subclass", but that would be used as "FooBarException is a subclass of Exception"... — Izkata
– Izkata, Commented Feb 22, 2012 at 21:16
Aside for your aside, I think you are looking for 'inner class', and here is a link to a similar question: stackoverflow.com/questions/4351782/… Short answer is 'No' — Jeff Lambert
– Jeff Lambert, Commented Feb 22, 2012 at 21:19
@watcher and linepogl - thanks, that would be why I couldn't find duplicates. "Member class" kept getting treated as "class members" in searches... — Izkata
– Izkata, Commented Feb 22, 2012 at 21:28

Vitamin · Accepted Answer · 2012-02-22 21:23:56Z

No, you can not. However, introduced in PHP 5.3 are namespaces. With namespaces you could similarly do:

<?php namespace MyNamespace { use Exception; class FooBarException extends Exception { } class FooBazException extends Exception { } class Foo { public function doSomething() { throw new FooBarException; } } } namespace AnotherNamespace { $bang = new \MyNamespace\Foo; try { $bang->doSomething(); } catch(\MyNamespace\FooBarException $up) { throw $up; // :) } }

Disappointing, but +1 and accept because I didn't even know about namespaces.

linepogl · Accepted Answer · 2012-02-22 21:19:43Z

1

No, it is not possible.

You can use namespaces for a similar effect, however.

answered Feb 22, 2012 at 21:19

linepogl

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Comments

Electronick · Accepted Answer · 2012-02-22 21:22:01Z

You cann't do it in PHP, but in php 5.3 you can use namespaces for similar functionality

http://php.net/namespace

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