PHP检查邮政编码

Question

I need to verify the postal code inserted in a text box and stored in a variable: "$code".

iIf the format is like this: XXXX – XXX it's valid. If not, it's invalid (the X's are numbers).

Someone told me to make a regex like this one but applied to my needs:

$regex = "/^[ABCEGHJKLMNPRSTVXY]{1}\d{1}[A-Z]{1} *\d{1}[A-Z]{1}\d{1}$/";

Not only do I not know how to make that, but I also don't know what to do after.

Do you guys have any idea on how to solve my problem?

Answer 1

You could try something like :

/^[0-9]{4}\s-\s[0-9]{3}$/

Or :

/^\d{4}\s-\s\d{3}$/

EDIT : If you have 0 or more space between the - and the digits :

/^\d{4}\s*-\s*\d{3}$/

If you have 0 or only one space between the - and the digits :

/^\d{4}\s?-\s?\d{3}$/

If you haven't any spaces between the - and the digits :

/^\d{4}-\d{3}$/