Validating uk postcodes adultdatingnewyork net
They are widely used to link individuals to various types of geographical, demographic and marketing data, and it's especially important that they are recorded and processed accurately.Unlike with US zip codes, you can't download a simple text file containing all known postcodes for use in validation routines.Do not use code, components or techniques unless you are satisfied that they will work correctly in your applications. If your application processes UK postcodes, you'll need an effective way of validating them.Postcodes in the UK do much more than speed the mail.The official Postcode Address File (PAF) contains around 27 million codes, and is subject to strict copyright and licensing controls.The only practical way to access it is by purchasing specialised address management software, and this is inevitably an expensive option.However, UK postcodes follow strict formatting rules.
(For an equivalent SQL Server function, see Parsing and validating UK postcodes in SQL Server.) The formatting rules for postcodes appear complex at first, but are in fact straightforward.
Feel free to copy and paste it into your application. lc Test = ; CHRTRAN(tc Code, "ABCDEFGHIJKLMNOPQRSTUVWXYZ", ; REPLICATE("A", 26)) lc Test = ; CHRTRAN(lc Test, "0123456789", ; REPLICATE("9", 10)) * Separate out the test string into outward and * inward portions lc Outward = ALLTRIM(LEFT(lc Test, LEN(tc Code)-4)) lc Inward = RIGHT(lc Test, 3) * The inward portion must be in the format 9AA IF lc Inward CHRTRAN(lc In Letters, "CIKMOV", "") RETURN . ENDIF * The outward portion must be in one of the * following formats: * A9, AA9, A99, AA99, A9A, AA9A IF NOT INLIST(lc Outward, ; "A9", "AA9", "A99", "AA99", "A9A", "AA9A") RETURN . It then become an easy matter to test the code against a list of valid patterns.
To use it, simply call the Check Postcode function, passing the postcode as a parameter. This form of pattern matching can be applied to many other types of validation.
So, in the postcode RG6 1WG (which happens to be that of Microsoft's UK headquarters), RG6 is the outward code and 1WG is the inward code.
The inward code always consists of exactly one digit followed by exactly two letters.