| Zip Codes ctype? Pregmatch? [message #182634] |
Tue, 20 August 2013 17:27  |
bill
Messages: 310
Registered: October 2010
Karma:
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Senior Member |
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Hi all,
I'm attempting to check for US and Canadian zip codes (postal codes).
The US is easy; mostly just be sure it's five numerics and except
"00000" and "99999". But Canadian is a different story because:
It consists of alternating alpha and numeric characters (AnAnAn) but
not the entire alphabet. 8 N.A. English letters are not used, as in
DFIOQUW AND Z or put another way, they only use 18 letters in their
postal codes.
I haven't see a single example in all my research to check if the
1st, 3rd, and 5th characters are alpha and th 2nd, 4th and 6th
characters are numeric.
I've tried preg_match and strpos without succees, likely due to my own
weakness with preg_match, and regex creates an incredibly long statement
I'm sure it's not right to put upon the servers; they slow down even my
local server XAMPP & PHP 5.3 on win 7.
Might anyone have a better method?
Or know of any functions anywhere that could be modified to be used?
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