Getting data out of a JSON API with PHP - php

Question

Im having trouble extracting data from a API, i would like to use for a school project..
The link to the API i here
Or here's a sample of the API output
{
"help": "http://www.odaa.dk/api/3/action/help_show?name=datastore_search",
"success": true,
"result": {
"resource_id": "2a82a145-0195-4081-a13c-b0e587e9b89c",
"fields": [
{
"type": "int4",
"id": "_id"
},
{
"type": "text",
"id": "date"
},
{
"type": "text",
"id": "garageCode"
},
{
"type": "int4",
"id": "totalSpaces"
},
{
"type": "int4",
"id": "vehicleCount"
}
],
"records": [
{
"date": "2015/11/11 03:50:07",
"vehicleCount": 62,
"_id": 1,
"totalSpaces": 65,
"garageCode": "NORREPORT"
},
{
"date": "2015/11/11 03:50:07",
"vehicleCount": 512,
"_id": 2,
"totalSpaces": 512,
"garageCode": "SKOLEBAKKEN"
},
{
"date": "2015/11/11 03:50:07",
"vehicleCount": 236,
"_id": 3,
"totalSpaces": 1240,
"garageCode": "SCANDCENTER"
},
{
"date": "2015/11/11 03:50:07",
"vehicleCount": 40,
"_id": 4,
"totalSpaces": 953,
"garageCode": "BRUUNS"
},
{
"date": "2015/11/11 03:50:07",
"vehicleCount": 2932,
"_id": 5,
"totalSpaces": 142,
"garageCode": "BUSGADEHUSET"
},
{
"date": "2015/11/11 03:50:07",
"vehicleCount": 18,
"_id": 6,
"totalSpaces": 383,
"garageCode": "MAGASIN"
},
{
"date": "2015/11/11 03:50:07",
"vehicleCount": 3,
"_id": 7,
"totalSpaces": 210,
"garageCode": "KALKVAERKSVEJ"
},
{
"date": "2015/11/11 03:50:07",
"vehicleCount": 255,
"_id": 8,
"totalSpaces": 700,
"garageCode": "SALLING"
},
{
"date": "2015/11/11 03:50:07",
"vehicleCount": 0,
"_id": 9,
"totalSpaces": 0,
"garageCode": "DOKK1"
},
{
"date": "2015/11/11 03:50:07",
"vehicleCount": 34,
"_id": 10,
"totalSpaces": 449,
"garageCode": "Navitas"
},
{
"date": "2015/11/11 03:50:07",
"vehicleCount": 105,
"_id": 11,
"totalSpaces": 105,
"garageCode": "NewBusgadehuset"
},
{
"date": "2015/11/11 03:50:07",
"vehicleCount": 9,
"_id": 12,
"totalSpaces": 319,
"garageCode": "Urban Level 1"
},
{
"date": "2015/11/11 03:50:07",
"vehicleCount": 15,
"_id": 13,
"totalSpaces": 654,
"garageCode": "Urban Level 2+3"
}
],
"_links": {
"start": "/api/action/datastore_search?resource_id=2a82a145-0195-4081-a13c-b0e587e9b89c",
"next": "/api/action/datastore_search?offset=100&resource_id=2a82a145-0195-4081-a13c-b0e587e9b89c"
},
"total": 13
}
}
I would like to extract the cells called "vehicleCount" and "_id", but i seems I can't figure out how to do it :(
$json = file_get_contents('http://www.odaa.dk/api/action/datastore_search?resource_id=2a82a145-0195-4081-a13c-b0e587e9b89c');
$json = json_decode($json);
echo $json->fields->_id;
I have tried many different ways, but now loss of ideas and its 4 o'clock in the morning, so hopefully someone can help me.

Answer 1

if you want to extract the cells vehicleCount and _id
This is my solution for you:
<?php
$json = file_get_contents('http://www.odaa.dk/api/action/datastore_search?resource_id=2a82a145-0195-4081-a13c-b0e587e9b89c');
$json = json_decode($json);
foreach ($json->result->records as $val) {
echo "_id = " .$val->_id . " vehicleCount = " . $val->vehicleCount . "<br>";
}
?>

Answer 2

$json->result->records[0]->_id