[pmwiki-devel] preg dot question...

The Editor editor at fast.st
Fri Dec 8 02:20:34 CST 2006

On 12/7/06, Patrick R. Michaud <pmichaud at pobox.com> wrote:
> On Thu, Dec 07, 2006 at 07:21:32PM -0500, The Editor wrote:
> > I have a pattern matching I'm using for a redirect markup called (:forward:).
> >
> > It looks like this:
> >
> > $x = preg_replace('/\(\:forward ([-.\\w]+)\:\)/e', 'Redirect($1)', $x);
> >
> > It works fine BUT
> >
> >  when I put (:forward Group.Page:) the value passed to Redirect is
> > GroupPage.  The dot disappears.
> You don't have quotes around your $1.  Thus after doing the match,
> PHP replaces the $1 with the part in parentheses and sees
>  Redirect(Group.Page)
> and since Group.Page isn't a string, the dot gets lost.  You really
> want:
>  $x = preg_replace('/\(\:forward ([-.\\w]+)\:\)/e', "Redirect('$1')", $x);
> BTW, I've noticed this throughout the ZAP code, where things that
> ought to be strings aren't placed in quotes.  That's generally not
> a good idea, because one never knows when a word will accidentally
> end up being a PHP function or having a meaning other than being
> a bareword string.

Ahhh, great Pm!  Thank you so much.  Makes sense now.  Could you be a
bit more specific about the kinds of places things ought to be in
quotes, and I'll plow my way through and try to make the corrections?

Thanks again in advance.


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