Convert DRUPAL module to WordPress PLUGIN
This module redirects users based on a zipcode that is entered on a site. This module provides a block with a field to enter in your zipcode and then determines the proximity of the zipcode to zipcodes you have specified in the module configuration. You can setup any number of zipcodes to check proximity against. You also add a URL for the TRUE and FALSE responses in the module settings page.

This module sets a cookie to remember your zipcode so you dont have to constantly put in a zipcode whenever you visit the site. Once you put in a zipcode, say on the front page of a site, youll never get the "real" front page again, because it will automatically redirect you based on a cookie that was set to one of the URLs you specified on the module configuration. This module is also set up so you dont get sent into a redirect loop if configured improperly, if the block is placed on a page that was redirected to, the redirect stops and an error is sent to screen.

You can configure distance in kilometers and miles.

I do not know what budget scale to apply to this project.

http://drupal.org/node/360895

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