Charting Your Course Using the Google Maps API
This ongoing series regarding building location-based web sites using PHP and the Google Maps API has covered quite a bit of ground, no pun intended, showing you how to plot locations on maps, convert addresses into their corresponding coordinates using a variety of solutions, and even build your own geocoding web service for fun and profit.
This installment tackles another fascinating aspect you'll undoubtedly encounter when building location-based solutions, namely distance calculation. Whether you want to simply plot the distance separating two points on the map, or perform more complex operations involving measuring the total distance spanning a more complex route, understanding how to perform these sorts of calculations will prove invaluable time and again. Along the way, you'll also learn how to enhance the user-friendliness of your maps using Ajax and various compelling features of the Google Maps API .
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