Re: [PHP] Deleting multiple backslashes; regex?

On Mon, 2010-03-15 at 15:35 -0400, Al Rider wrote:

> 
> 
> On 3/15/2010 3:11 PM, Ashley Sheridan wrote: 
> 
> > On Mon, 2010-03-15 at 15:03 -0400, Al wrote: 
> > 
> > > Anyone have a regex pattern for deleting multiple backslashes e.g., \\\\\\\
> > > 
> > > I pretty good with regex; but, be damned if I can delete them with preg_replace()
> > > 
> > > I've tried "\\\\" as the manual says
> > > 
> > > preg_replace("/\\\\/", '', $str);
> > > 
> > > preg_replace("/(\\\\)+/", '', $str);
> > > 
> > > preg_replace("/\x5C/", '', $str);
> > > 
> > > preg_replace("/\\x5c/", '', $str);
> > > 
> > > And lots of others.
> > > 
> > > stripslashes() and stripcslashes() are limited.
> > > 
> > > 
> > > 
> > >     
> > 
> > 
> > What about this:
> > 
> > $str = 'text\\dfnfg\\dhdsg\\\\';
> > echo preg_replace('/\\\{2,}/', '', $str);
> > 
> > I think what was catching you out was that you were escaping the \
> > once for the regex, but then it needed it again because it was in a
> > single quoted string, meaning 3 slashes in total. Took me a little
> > while to figure that out as well!
> > 
> > The {2,} part just tells it to only remove the slashes where they
> > occur in runs of two or more.
> > 
> 
> 
> I agree, it should work; but, it doesn't.  
> 
> Most everything that looks reasonable works in The Regex Coach,
> including you suggestion.  
> 
> I'm starting to think there is a bug in the regex engine; haven't
> looked yet.  It's doubtful though because the bug would screw existing
> code.  
> 
> > Thanks,
> > Ash
> > http://www.ashleysheridan.co.uk
> > 
> > 
> > 


I tried the code I just gave you and it's working, so I'm not sure now
what issue you're having with it?

Thanks,
Ash
http://www.ashleysheridan.co.uk