Re: retreiving postal/zip codes with PHP

ive used royal mail before for my ebay sales, they give so many lookups per day for free, not enough for a website to use, im not sure any other service would be accurate or free but let us know if you do find any which are because I need something like this also. I. Gray wrote:

Hi. I was wandering whether anyone knew how i can use php to retrieve info from a postal code (probably mainly in the UK) so that when a person enters the post code it comes up with the address or I can do other things with the info. Is there a php class that can do this? Would I need to use a database of postal info? If so are there any (preferably free) ones?