Find all the zip codes in a radius of x miles from a another zip code, or find the distance between two zip codes. The script uses the most up-to-date database provided by the U.S government with 42,000+ records. Using it is as simple as calling a PHP function. This program was written with simplicity in mind. It is very easy to use and install. This script can be used alone or easily integrated with other projects such as a store locator. Instalation instructions 1. Open phpMyAdmin and import the file named "zip_codes_database". 2. Edit zipcode.php and enter your database username and password. 3. Customize zipcode.php to work with your application ---- find_close_zipcodes($origin_zipcode, $distance, $unit)($zipcode, $distance, $unit) $origin_zipcode is the origin zipcode from which you are finding neighboring codes $distance is the radius you want to search $unit is the unit you want your result returned. $unit can be "K" for kilometers, "M" for miles, The results are returned in a multi-dimensional array. [result number] [zipcode][distance] ---- distance_between_zipcodes($zipone, $ziptwo, $unit) $zipone is the first zipcode $ziptwo is the second zipcode $unit is the unit you want your result returned. $unit can be "K" for kilometers, "M" for miles,