You need to change your logic such that the "does not match" message is printed AFTER the WHILE loop completes.
in reply to [SOLVED] Checking username and password but cant break whileloop!
This means, you need a flag inside the while loop that determines whether or not a match was found.
Typically, this would be something like a $match_count, which initializes to zero, and is incremented on each match.
This counter could also be used to exit the loop early, if a match is found (using the 'last' verb).
At the end of the loop, if it is still zero, you print the message.
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