Question

How can you match the following words by PHP, either by regex/globbing/…?

Examples

INNO, heppeh, isi, pekkep, dadad, mum

My attempt would be to make a regex which has 3 parts:

1. 1st match match [a-zA-Z]*
2. [a-zA-Z]?
3. rotation of the 1st match // Problem here!

The part 3 is the problem, since I do not know how to rotate the match.
This suggests me that regex is not the best solution here, since it is too very inefficient for long words.

Answer 1

I think regex are a bad solution. I’d do something with the condition like: ($word == strrev($word)).