Get U.S. state from IP address [duplicate]

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is there a good PHP geolocation service?

Is it possible to determine which state a visitor to a web page is from based on their IP address? I know you can get this data (and relative location data) from开发者_JAVA技巧 searching their IP addresses using the various WHOIS tools out there, but I'm not sure how I would achieve this on a single web page. I want to display some contextual information to visors on my site.

You can install the GeoIP extension.

You can use Maxmind's PHP API for Geo IP lookup with their GeoLiteCity free database.