Re: Unexplained Issue Using Regex

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On Sat, Mar 7, 2009 at 2:37 PM, Jochem Maas <jochem@xxxxxxxxxxxxx> wrote:

> Nitsan Bin-Nun schreef:
> > Hi lista,
> >
> > I have been trying to figure this out for the last couple of hours but
> I'm
> > lack of luck.
> > Take a look at these regex's, the string that was inputed into the
> > preg_replace (using Uis modificators) and the results:
> > (the lists have correspondence to each other)
> >
> > ORIGINAL STRING
> > ----
> >
> > http://www.zshare.net/video/541070871c7a8d9c
> > http://www.guba.com/watch/2000821351
> > http://www.veoh.com/videos/v4609719YfsCFpf
> >
> >
> > REGEX USED (with Uis modificators)
> > ----
> > http:\/\/(www\.|)zshare\.net\/video\/([^\/]+)               $3
> > http:\/\/(www\.|)guba\.com\/watch\/([0-9]+)              $3
> > http:\/\/(www\.|)veoh\.com\/videos\/([^\/]+)
> >
> > THE RETURNED STRING
> > ----
> > 41070871c7a8d9c
> > 000821351
> > 4609719YfsCFpf
> >
> > If you will go through this carefully you will notice that the first
> > character of each matching group is being deleted.
> > The regex's and the replacements string are being fetched from the
> database
> > (mysql) and goes straight to the preg_replace function with the original
> > string.
> >
> > I have no idea why this happens.
> > I'm looking forward for your opinions and suggestions.
>
> php -r '
> var_dump(preg_replace("#http:\/\/(www\.|)zshare\.net\/video\/([^\/]+)#Ui",
> "\\2", "http://www.zshare.net/video/541070871c7a8d9c";));
> '
> string(16) "541070871c7a8d9c"
>
> given the above test I don't see the problem with the regexp
> (but you don't actually show the code so it's hard to tell), I'd
> probably look else where for the char munching culprit.


Well, yes if Nitsun is not sharing his piece of code we will have to guess
wildly... but why? :)

>
>
> >
> > Regards,
> > Nitsan
> >
>
>
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