[TYPO3-core] RFC: Bug / Feature #5838: Get cli_dispatch.phpsh to work on windows platforms

[Dmitry Dulepov [typo3]]

Hi!

Martin Kutschker wrote:
> Odd. I tried to match a \. In the shell I need \\\ (within the regexp) 
> to match a single \ in the path string:
> 
> preg_match('/^([A-Z]:)?\\\/', $temp_PATH_thisScript)
> 
> Why do I need three? Any other number raises the mentioned error.

Because two slashes inside PHP's quotes give one single slash in the string:

echo '\\'

outputs a single slash.

So, after PHP processing of quotes, you get two slashes passed to preg_match. Slash is treated as escape character inside regexp, so to escape the slash itself, you have to put it twice. As a result you get a single slash in the searched string.

\\\ =quotes=> \\ =regexp=> \ 

-- 
Dmitry Dulepov
TYPO3 core team
Web: http://typo3bloke.net/
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