How to use Amap API in php to get the shortest driving path between two points

How to use Amap API in php to get the shortest driving path between two points

Introduction:
With the rapid development of the mobile Internet, map applications have become indispensable in our daily lives. Tool of. Amap is one of the most popular map service providers in China. This article will introduce how to use the Amap API in PHP to obtain the shortest driving route between two points, and attach corresponding code examples. I hope it can help you better utilize the Amap API for development.

1. Apply for Amap API key
First, we need to apply for an API key on the Amap open platform. The specific steps are as follows:

1. Visit the official website of Amap Open Platform: https://lbs.amap.com/
2. Click the "Console" button in the upper right corner to enter the developer console.
3. If you don’t have an AutoNavi account, you need to register an account first.
4. After registration is completed, click "My Applications" in the developer console, and then click "Create New Application".
5. Fill in the corresponding application information and select "Web Service API".
6. After successful creation, you can see the corresponding application information, including API key, in the application list.

2. Write PHP code
After applying for the API key, we can start writing PHP code to achieve the function of obtaining the shortest driving path between two points. The specific steps are as follows:

1. Create a php file, for example: get_driving_route.php.
2. Use the following code to introduce the Amap API:

<?php
$api_key = "你申请到的API密钥";
$url = "https://restapi.amap.com/v3/direction/driving?parameters";

3. Set the latitude and longitude coordinates of the starting point and end point as needed. For example, set the starting point to the coordinates of Beijing Tiananmen Square (116.397428, 39.90923), and the end point to the coordinates of Beijing Capital Airport (116.497635, 39.938811).

$origin = "116.397428,39.90923";
$destination = "116.497635,39.938811";

4. Construct the request URL and set the corresponding parameters.

$url .= "&origin=" . $origin . "&destination=" . $destination . "&key=" . $api_key;

5. Send a request and get the return result.

$result = file_get_contents($url);
$result = json_decode($result, true);

6. Process the returned results and extract the required information. For example, get the shortest route distance and estimated driving time.

$distance = $result['route']['paths'][0]['distance'];
$duration = $result['route']['paths'][0]['duration'];

7. Print the results.

echo "最短驾车路径距离：" . $distance . "米";
echo "预计驾车时间：" . $duration . "秒";

3. Run the code and test
Save the above code, open the browser, and access the URL of the php file to get the shortest driving path distance and estimated driving time between two points.

Summary:
This article introduces how to use the Amap API in PHP to obtain the shortest driving path between two points. By applying for an API key and writing the corresponding php code, we can quickly obtain the required driving route information. Using the Amap API, we can implement more interesting and practical functions in development, such as navigation, path planning, etc. Hope this article can be helpful to you.

Appendix: get_driving_route.php complete code

<?php
$api_key = "你申请到的API密钥";
$url = "https://restapi.amap.com/v3/direction/driving?parameters";

$origin = "116.397428,39.90923";
$destination = "116.497635,39.938811";

$url .= "&origin=" . $origin . "&destination=" . $destination . "&key=" . $api_key;

$result = file_get_contents($url);
$result = json_decode($result, true);

$distance = $result['route']['paths'][0]['distance'];
$duration = $result['route']['paths'][0]['duration'];

echo "最短驾车路径距离：" . $distance . "米";
echo "预计驾车时间：" . $duration . "秒";
?>

The starting point and end point coordinates in the above code can be modified according to actual needs. In addition, you can also make more detailed parameter settings according to the instructions in the Amap API document to meet your needs.

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