[pmwiki-users] MarkupExpressionsExtensions

[Petko Yotov]

On Tuesday 17 April 2007 10:11, you wrote:
> > It is not safe because if the expression is not mathematically correct,
> > it will however try to execute it, and this will result in a Fatal Error.
> > Try with
> >   {(math '12+(*')}
> > But you can tell your users not to write such incorrect expressions.
>
> Is there a way to avoid this by doing something like,
>
> onerr return '';

Only in PHP 5 AFAIK. Explore http://php.net/try (an advanced PHP topic).