On 13/11/06, Roman Neuhauser <neuhauser@xxxxxxxxxx> wrote:
# dotancohen@xxxxxxxxx / 2006-11-13 01:35:44 +0200:
> On 13/11/06, Chris <dmagick@xxxxxxxxx> wrote:
> >
> ><?php
> >function makeLink($matches) {
> > $returnString="<b>" . $matches[1] . "</b>";
> > return $returnString;
> >}
> >
> >$articleText="This is a very [long] string.";
> >$articleText=preg_replace_callback('/\[([a-z]+)\]/i' , "makeLink",
> >$articleText);
> >print $articleText . "\n";
> >?>
> >
> >
> >The callback takes whatever the regular expressions returns (alpha
> >characters between [ and ]) and runs it through function "makeLink".
> >
> >Not sure how that will go with multiple []'s etc in the same string but
> >it should get you started.
> >
>
> I didn't know that I had to call the function like that- I don't
> remember ever seeing it called that way.
It's done this way in all the examples on
http://cz.php.net/manual/en/function.preg-replace-callback.php
What documentation did you read?
In the first example on that page, it looks to me like it should just
return the text "next_year", and not call that function. Obviously, it
is my misunderstanding of the way that the funciton works, and not in
the function itself. I do learn php from TFM and this list, not from a
course. Just like in any learning environment, I could misinterpret
what is taught to me and need to ask a question, or not even know that
I misinterpreted and not know that I need to ask a question. This is a
case of the latter, clearly, because I have never needed to do
anything other than a simple str_replace until now.
> Also, I must google the meaning of the (~+) in the regex.
No need to google:
http://cz.php.net/manual/en/reference.pcre.pattern.syntax.php
Skip the Differences From Perl section.
That I have read at least three or four times. I still don't capture
all of it, but I try. You are correct, I should have referenced that
right away. It won't hurt for me to read it again, too. Thank you.
Dotan Cohen
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