Regex exclude 1 word from regex code

Question

I need a regex specialist to help with this. The examples I found here and the network that I seem to be wrong. I am using PHP and I have the following regex expression

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

This corresponds to elements such as GCABCD GC123A, etc. What I need to do is to exclude GCSTATS from this. So basically I want it to work the same way it does, except by ignoring the GCSTATS in the regex.

Answer 1

Try adding this after GC: (?! STATS). This is a negative design. Therefore your regular expression should be

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

ps or try it ?<!

Answer 2

Regex statements are what you need. This also works if the search text starts with GC ...

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

Answer 3

See if this works:

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

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