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07/08/2008 at 05:31PM PDT, ID: 23548760
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9.1

Using Google Maps API to determine the driving distance between two locations

Asked by Ray_Paseur in Extensible Markup Language (XML), JavaScript, PHP Scripting Language

Tags: Google Maps API, XHTML, XML

Building on this question:
http://www.experts-exchange.com/Web_Development/Web_Languages-Standards/PHP/Q_23531323.html

Visit this page and you will see that Google says the driving distance is 237 miles
http://maps.google.com/maps?f=d&hl=en&geocode=&saddr=20016&daddr=15222&sll=39.693615,-78.54249&sspn=1.608247,3.633728&ie=UTF8&z=9

If you use the code snippet, Google says the driving distance is 245 miles.  You will need a Google API key to test it out.  Link here: http://code.google.com/apis/maps/signup.html

Those two answers are pretty close, and in fact, either answer is OK.  The central issue is getting the answer in a way that is programatically useful.

I want to know how to get step-wise driving distances from Google in a way that can be parsed in a PHP script.  If there is an HTTP solution that calls Google and returns a CSV or an XML string that would be ideal.  If you can show me the PHP code to "scrape" the answer out of the script below, that would be OK, too.

Thanks for your help,
Ray 
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<link href="/style.css" rel="stylesheet" type="text/css" />
<title>Miles to ... using Maps API</title>
<script type="text/javascript" src="http://www.google.com/jsapi?key=[your Google API Key]"></script>
<script type="text/javascript">
//<![CDATA[
google.load("maps", "2");
var gdir;
function load() {
        if (GBrowserIsCompatible()) {
                gdir = new google.maps.Directions();
                google.maps.Event.addListener(gdir, "load", handleLoad);
                gdir.load("from: Washington, DC to: Pittsburgh, PA", {getSteps: true});
        }
}
function handleLoad() {
        document.getElementById("totalMiles").innerHTML = gdir.getDistance().html;
}
window.onload = load;
window.onunload = google.maps.Unload;
//]]>
</script>
</head>
 
<body>
<h3>Miles to ... </h3>
 
<div id="totalMiles"></div>
 
</body>
</html>
Related Solutions: Simple Google Distance Calculation giving error
[+][-]07/08/08 11:24 PM, ID: 21960989

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About this solution

Zones: Extensible Markup Language (XML), JavaScript, PHP Scripting Language
Tags: Google Maps API, XHTML, XML
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Solution Provided By: fibo
Participating Experts: 4
Solution Grade: A
 
 
[+][-]07/09/08 08:15 PM, ID: 21970205

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