Hi,

i'm trying to build a class that sorts a multidimensional array.
I'm using the php function "usort".

I declared the comparision function as a method of my class but i'm unable to give it as argument to the function usort.

this "usort($this->arr, $this->cmpi)" gaves the following error: usort() [function.usort]: Invalid comparison function

i tried to do "usort($this->arr, 'cmpi')" but it does not work either.

Thanks


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> i'm trying to build a class that sorts a multidimensional array.
> I'm using the php function "usort".
>
> I declared the comparision function as a method of my class but i'm unable to give it as argument to the function usort.
>
> this "usort($this->arr, $this->cmpi)" gaves the following error: usort() [function.usort]: Invalid comparison function
>
> i tried to do "usort($this->arr, 'cmpi')" but it does not work either.

If it's anything like other functions, try this:

usort($this->arr, array($this, 'cmpi'));

--
Richard Heyes

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It works thanks a lot!


--- On Fri, 5/9/08, Richard Heyes <richardh@phpguru.org> wrote:

> From: Richard Heyes <richardh@phpguru.org>
> Subject: Re: [php] usort inside a class
> To: itmaqurfe@yahoo.com
> Cc: php-general@lists.php.net
> Date: Friday, May 9, 2008, 8:47 PM
> > i'm trying to build a class that sorts a
> multidimensional array.
> > I'm using the php function "usort".
> >
> > I declared the comparision function as a method of my
> class but i'm unable to give it as argument to the
> function usort.
> >
> > this "usort($this->arr, $this->cmpi)"
> gaves the following error: usort() [function.usort]:
> Invalid comparison function
> >
> > i tried to do "usort($this->arr,
> 'cmpi')" but it does not work either.
>
> If it's anything like other functions, try this:
>
> usort($this->arr, array($this, 'cmpi'));
>
> --
> Richard Heyes
>
> +----------------------------------------+
> | Access SSH with a Windows mapped drive |
> | http://www.phpguru.org/sftpdrive |
> +----------------------------------------+


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