Zip Code Range and Distance Calculation classThis is a PHP class to do various calculations with zip codes. It`s primary purposes are to calculate the distance between ...
This is a PHP class to do various calculations with zip codes. It`s primary purposes are to calculate the distance between two zip codes and to extract all the zip codes that are within a range of a given zip code. All calculations are based on lattitude and longitude coordinates stored in the database. Included is a class file, demonstration file, and the sql files required to create and populate the MySQL tables. ** UPDATE ** Added code to make the function which get`s a range of zip codes execute ALOT faster. Went from 3.2 seconds to 0.42 seconds! Modification was submitted by Jeff Bearer
