I'm trying to validate a GUID in PHP with the following line.
$case_number = "088169ed-7a9d-4f78-b999-170971247642\n";
$GUID_validation_RegEx = '/^[A-Fa-f\d]{8}-[A-Fa-f\d]{4}-[A-Fa-f\d]{4}-[A-Fa-f\d]{4}-[A-Fa-f\d]{12}$/';
print(preg_match($GUID_validation_RegEx, $case_number));
It returns 1 (true)
I've narrowed down the problem to the following ...
^[A-Fa-f\d]{8}-[A-Fa-f\d]{4}-[A-Fa-f\d]{4}-[A-Fa-f\d]{4}-[A-Fa-f\d]{12}$
^^^ these A-F (if I remove them the new line does not match)
Why is this happening and how can I fix it?
