[pmwiki-users] show random image

Dominique Faure dominique.faure at gmail.com
Thu Nov 22 09:21:07 CST 2007


On Nov 22, 2007 1:12 PM, Hans <design5 at softflow.co.uk> wrote:
> Thursday, November 22, 2007, 11:48:53 AM, Petko Yotov wrote:
>
> > One of them is Thumblist :
> >   (:thumblist shuffle=1:)
>
> > A demonstration can be seen here:
> >   http://galleries.accent.bg/Thumblist/Shuffle
>
> Thank you! But maybe I don't need to install a whole gallery script
> for the task of a rotating image on a home page.
>
> I just come up with this simple solution, based on the rand function:
>
> # Create a  markup expression {(random xx zz)}
> $MarkupExpr['random'] = 'MakeRandomNumber( $args[0], $args[1])';
> function MakeRandomNumber( $n1, $n2) {
>         $l = strlen($n2);
>         $rn = rand($n1, $n2);
>         return sprintf("%0{$l}d",$rn);
> }
>
> This returns a formatted random number, with a number of digits
> according to the second argument:
> so {(random 1 30)} will return a random number between 01 and 30
> (inclusive). Note it starts at 01, not 1. I want the leading zeros so
> I can use it in standard image file names for the page markup:
>
>    Attach:image_{(random 1 30)}.jpg
>
> and it will display an image from a collection from
> image_01.jpg to image_30.jpg
>
> BTW: anyone knows why the {(rand)} markup expression does not work?
> see http://www.pmwiki.org/wiki/Cookbook/MarkupExpressions-Sandbox
>

It works in the regular http://www.pmwiki.org/wiki/Main/WikiSandbox

-- 
Dominique



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