Re: $result = $className::$methodName(); - possible?

From: Ashmodai (ashmodai_at_mushroom-cloud.com)
Date: 01/30/05 

Date: Sun, 30 Jan 2005 03:39:25 +0100
To: Joshua Beall <jbeall@donotspam.remove.me.heraldic.us>

Joshua Beall scribbled something along the lines of:
> Hi All,
>
> I have been trying to dynamically call a static member function, as follows:
>
> $className = 'MyClass';
> $methodName = 'MyMethod'
> $result = $className::$methodName();
>
> However, I get a parse error when I do this:
>
> Parse error: parse error, unexpected T_PAAMAYIM_NEKUDOTAYIM in
> /home/HE/web_develop/ghea/www/cgi-bin/lib/EventRegistrationBridgerClasses.inc
> on line 28
>
> Line 28 is indeed the line in which $result = $className::$methodName();
> appears.
>
> Is there any way to do what I am trying to do? I have had success
> dynamically calling methods on known classes. E.g.,
>
> $methodName = 'MyMethod';
> $result = MyClass::$methodName();
>
> This works fine. What if I want to have the class name dynamically defined
> as well? Is there any way to do that?
>
> Thanks for any pointers!
>
>

The problem is that $className::$methodName() results in an error simply
because $className is a string, not an object.
$$className won't work because $MyClass is an undefined variable and not
an object.

I think eval() might solve that.
Try something like

eval($className.'::'.$methodName.'();');

This *should* translate the string into

MyClass::MyMethod();

and execute it.

I'm sure that eval() will help you out but I haven't tested this. 

--
Ashmo

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