Re: Deleting multiple backslashes; regex?

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On 3/15/2010 3:30 PM, Ashley Sheridan wrote:
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




Thanks ever so much guys. Sometimes it's helpful when someone else confirms something must work.

Problem was that I had a series of cleanup and security checks on a POST array and inadvertently used the original POST array in one of the steps following the backslash remove step, so obviously it didn't work.

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