Regex to exclude 1 word out of a regex code

Question

I need a regex expert to help out on this one. Examples I've found on here and the net I cant seem to get right. I'm using PHP and I have the following regex expression

/([^a-zA-Z0-9])GC([A-Z0-9]+)/

This matches items like GCABCD GC123A, etc. What i need to do is EXCLUDE GCSTATS from this. So basically I want it to work just as it has, except, ignore GCSTATS in the regex.

Your regex does not work if the search text starts with GC... — OIS
– OIS, Commented Apr 7, 2010 at 18:34

T.Todua · Accepted Answer · 2016-03-30 19:06:23Z

10

Try to add this after GC: (?!STATS). It's a negative lookahead construction. So your regex should be

/([^a-zA-Z0-9]*)GC(?!STATS)([A-Z0-9]+)/

p.s. or try ?<!

edited Mar 30, 2016 at 19:06

T.Todua

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answered Apr 7, 2010 at 18:24

Hun1Ahpu

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OIS · Accepted Answer · 2010-04-07 18:30:50Z

0

Regex assertions is what you need. This also works if the search text starts with GC...

/(?<![A-Za-z0-9])GC(?!STATS)[A-Z0-9]+/

edited Apr 7, 2010 at 18:30

answered Apr 7, 2010 at 18:24

OIS

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Audie · Accepted Answer · 2010-04-07 18:33:03Z

0

See if this works:

([^a-zA-Z0-9])GC((?!STATS)[A-Z0-9]+)

More Information is available at lookaround

answered Apr 7, 2010 at 18:33

Audie

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