Calculate distances and sort them
- by Emir
Hi guys,
I wrote a function that can calculate the distance between two addresses using the Google Maps API.
The addresses are obtained from the database. What I want to do is calculate the distance using the function I wrote and sort the places according to the distance. Just like "Locate Store Near You" feature in online stores.
I'm going to specify what I want to do with an example:
So, lets say we have 10 addresses in database. And we have a variable $currentlocation. And I have a function called calcdist(), so that I can calculate the distances between 10 addresses and $currentlocation, and sort them. Here is how I do it:
$query = mysql_query("SELECT name, address FROM table");
while ($write = mysql_fetch_array($query)) {
$distance = array(calcdist($currentlocation, $write["address"]));
sort($distance);
for ($i=0; $i<1; $i++) {
echo "<tr><td><strong>".$distance[$i]." kms</strong></td><td>".$write['name']."</td></tr>";
}
}
But this doesn't work very well. It doesn't sort the numbers.
Another challenge:
How can I do this in an efficient way? Imagine there are infinite numbers of addresses; how can I sort these addresses and page them?
