如何从php中的json输出中提取数据

Question

In my PHP code i have to launch something like this command:

"http://router.project-osrm.org/table?loc=$lat,$lon&loc=$lat2,$lon2"

The response is, for example:

{"distance_table":[[0,1047],[1046,0]]}

So how can i do this in php(I have seen something similar with google maps api but with this kind of command I am not able to do what i want) and how can I print as result the number 1047 (in this case). Thanks very much in advance! It is very important!

Answer 1

You can use file_get_contents to download from the URL. Then use json_decode to parse the JSON into a PHP object or array. Then you access it just like ordinary PHP data.

$response = file_get_contents("http://router.project-osrm.org/table?loc=$lat,$lon&loc=$lat2,$lon2");
$data = json_decode($response);
$num = $data->distance_table[0][1];
echo $num; // prints 1047