[PHP] (Perl) Regular Expressions - oposite match or get the non-matches of a substring
Hi all,
I consider myself quite good with Regular Expression, but i could never find
out how to match something like:
"match this but not this and that"
so i would like to match the first "match this" (or "another this") but not
"not this".
Seems pretty straight forward but i haven't found a (good) solution yet.
Please no solutions with extra code, i know how to do that. I need a regular
expression that can do it, preferably Perl compatible. Surprisingly i
couldn't figure out how to say '/!(not) this/'. Seems like there must be a
simple way, but i can't seem to figure it out.
Tried things like: '/[^n][^o][^t] this/', '/[^not]{3} this/' etc but all of
those don't work. Looked in various books and websites but didn't find what
i was looking for...
Please enlighten me if you can.
Regards,
Tim
Tim-Hinnerk Heuer
http://www.ihostnz.com
Bob Hope - "I have a wonderful make-up crew. They're the same people
restoring the Statue of Liberty."
Re: [PHP] (Perl) Regular Expressions - oposite match or get the non-matches of a substring
German Geek wrote: > I consider myself quite good with Regular Expression, but i could > never find out how to match something like: > > "match this but not this and that" > > so i would like to match the first "match this" (or "another this") > but not "not this". > > Seems pretty straight forward but i haven't found a (good) solution > yet. Check out "look-around" (-behind, -ahead), here for instance: http://www.regular-expressions.info/refadv.html > Surprisingly i couldn't figure out how to say '/!(not) this/'. Seems !/this/ /Per -- Per Jessen, Zürich (0.4°C) -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] (Perl) Regular Expressions - oposite match or get the non-matches of a substring
> Hi all,
>
> I consider myself quite good with Regular Expression, but i could never find
> out how to match something like:
>
> "match this but not this and that"
>
> so i would like to match the first "match this" (or "another this") but not
> "not this".
>
> Seems pretty straight forward but i haven't found a (good) solution yet.
> Please no solutions with extra code, i know how to do that. I need a regular
> expression that can do it, preferably Perl compatible. Surprisingly i
> couldn't figure out how to say '/!(not) this/'. Seems like there must be a
> simple way, but i can't seem to figure it out.
>
> Tried things like: '/[^n][^o][^t] this/', '/[^not]{3} this/' etc but all of
> those don't work. Looked in various books and websites but didn't find what
> i was looking for...
>
try this
/match this but (?!not this and that)/
goodluck!
Virgil
http://www.jampmark.com
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