Re: [PHP] Write multiple backslashes
- Date: Wed, 8 Mar 2017 08:58:38 -0500
- From: Aziz Saleh <azizsaleh@xxxxxxxxx>
- Subject: Re: [PHP] Write multiple backslashes
On Wed, Mar 8, 2017 at 8:40 AM, Danny <mynixmail@xxxxxxxxx> wrote:
> As a matter of interest I got it solved using 8 backslashes ... one would
> that 1 backlash will escape 1 more backlash, but it doesn't. Somehow 8
> backlashes did the job ... don't ask me how ...
> Thank you for everyone's input ...
> > I'm no regard expert but don't you have to escape it for each one?
> > Something like $second_rexexp = "ignore_tmp=^(\\\\*.*\\\\*)$";
> > I could be way off base though...
> > Yes that's true but only because it is a double quoted string, meaning
> > backslashes are treated as escape sequences.
> > You could also just use a single quoted string.
> > $second_regexp = 'IGNORE_TMP=^(\\*.*\\*)$';
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You do need 4 slashes for each slash. The way it works is the \\\\ becomes
\\ (PHP escapes each \ with \ before sending it to regular expression) then
regular expression treats \\ as \.
If you were outputting it without sending it to regular expression then \\
would be sufficent.