$classname::a_static_func() won't work!!

[http://www.douglassdavis.com]

Why is it that I can do this:

$obj= new $classname();

But not this:

$classname::ast aticfunc()

I would like to call a static function when I only have the class name
in a variable and the function name. It seems like the above code
should work, but it doesn't. I get:

Parse error: syntax error, unexpected T_PAAMAYIM_NEKU DOTAYIM

What is the correct syntax to do this please?

[Alvaro G Vicario]

Re: $classname::a_s tatic_func() won't work!!

*** http://www.douglassdavis.com wrote/escribió (28 Aug 2005 20:25:19
-0700):[color=blue]
> Why is it that I can do this:
>
> $obj= new $classname();
>
> But not this:
>
> $classname::ast aticfunc()[/color]

Because the second syntax is not correct:

http://php.grn.es/manual/en/keyword.paamayim-nekudotayim.php

--
-- Álvaro G. Vicario - Burgos, Spain
-- http://bits.demogracia.com - Mi sitio sobre programación web
-- Don't e-mail me your questions, post them to the group
--

[http://www.douglassdavis.com]

Re: $classname::a_s tatic_func() won't work!!


Alvaro G Vicario wrote:[color=blue]
> *** http://www.douglassdavis.com wrote/escribió (28 Aug 2005 20:25:19
> -0700):[color=green]
> > Why is it that I can do this:
> >
> > $obj= new $classname();
> >
> > But not this:
> >
> > $classname::ast aticfunc()[/color]
>
> Because the second syntax is not correct:
>
> http://php.grn.es/manual/en/keyword....ekudotayim.php[/color]


I am using PHP5, but thanks for that manual reference.

A better question is, does any one know how to call a static function
on a class that you only have the name of in a variable?

Since this $classname::ast aticfunc() doesn't work.

I don't think theres any reason why it couldn't work, but that's a
conversation that the PHP designers need to have.

How do i do this?

[Andy Hassall]

Re: $classname::a_s tatic_func() won't work!!

On 29 Aug 2005 04:17:38 -0700, "http://www.douglassdav is.com"
<doug@douglassd avis.com> wrote:
[color=blue]
>A better question is, does any one know how to call a static function
>on a class that you only have the name of in a variable?
>
>Since this $classname::ast aticfunc() doesn't work.[/color]

http://uk2.php.net/call_user_func

--
Andy Hassall :: andy@andyh.co.u k :: http://www.andyh.co.uk
http://www.andyhsoftware.co.uk/space :: disk and FTP usage analysis tool

[Hero Wanders]

Re: $classname::a_s tatic_func() won't work!!

Hello!
[color=blue]
> I would like to call a static function when I only have the class name
> in a variable and the function name.
>
> What is the correct syntax to do this please?[/color]

You can use this:

$class = 'MyClass';
$function = 'aStaticFunc';
call_user_func( array($class, $function), 'a', 'b', 'c');

If you have dynamic parameter lists, use call_user_func_ array().

Greetings,
Hero Wanders

[Michael Winter]

Re: $classname::a_s tatic_func() won't work!!

On 29/08/2005 12:17, http://www.douglassdavis.com wrote:

[snip]
[color=blue]
> A better question is, does any one know how to call a static function
> on a class that you only have the name of in a variable?[/color]

Use the function handling functions[1].

The first argument to the call_user_func function is the callback
pseudo-type. This means you can pass an array that specifies a method of
either a class or an instance (examples included in documentation of
callback type[2]).

You could use the class/object functions[3], such as get_class_vars, to
do a similar thing with members. However, only the class name is
necessary in this case, and the return value is an array of all public
members (static and otherwise).

Mike


[1] <URL:http://uk2.php.net/manual/en/ref.funchand.ph p>
[2]
<URL:http://uk2.php.net/manual/en/language.pseudo-types.php#langu age.types.callb ack>
[3] <URL:http://uk2.php.net/manual/en/ref.classobj.ph p>

--
Michael Winter
Prefix subject with [News] before replying by e-mail.