How to save JSON objects in a array?`

Question

First of all, here's the code I'm using

$json = file_get_contents('./releases.json');
$data = json_decode($json, TRUE);
$region = isset($_GET['region']) ? $_GET['region'] : null;

# if region is not null: ?region=8
if ($region) {
    $region_filter = function($v) use ($region) {
        // 8 == Worldwide
        if ($v['region'] == $region || $v['region'] == 8) {
            return true;
        } else {
            return false;
        }
    };
    $data = array_filter($data['data'], $region_filter);
}

header('Content-Type: application/json');
echo json_encode(array('data' => $data));

As you can see I'm using array('data' => $data) to store my JSON objects ($data) in array named 'data', but all this do is create a parent object data that has all the other objects not an array, how can i fix this? Thank you very much!

releases.json example:

{
"last_update_on": "2017-12-30",
"data": [{..}, {..}]
}

I don't understand the question. What is the output you expect? What is the structure of releases.json? — Priidik Vaikla
– Priidik Vaikla, Commented Dec 30, 2017 at 18:30
Presume you want, echo json_encode($data);, else show your expected output. — Lawrence Cherone
– Lawrence Cherone, Commented Dec 30, 2017 at 18:35
Yes, but how you want to fix this? What structure would you expect? — Priidik Vaikla
– Priidik Vaikla, Commented Dec 30, 2017 at 18:36
What I want is {"data":[..]} with the new filtered data I get with ?region= — user9028316
– user9028316, Commented Dec 30, 2017 at 18:37

CodeBoy · Accepted Answer · 2017-12-30 18:43:36Z

If $_GET['region'] is not set, then you skip the code within the if block and so still has $data['data'] in it and then you add another level with array('data'=>$data).

But if $_GET['region'] is set, then the code within the if block will remove the top level 'data' it does $data = array_filter($data['data'], $region_filter);.

In other words, $data is structurally different depending on if the if block code is executed or not. Try this

$json = file_get_contents('./releases.json');
$data = json_decode($json, TRUE);
$data = $data['data'];
$region = isset($_GET['region']) ? $_GET['region'] : null;

# if region is not null: ?region=8
if ($region) {
    $region_filter = function($v) use ($region) {
        // 8 == Worldwide
        if ($v['region'] == $region || $v['region'] == 8) {
            return true;
        } else {
            return false;
        }
    };
    $data = array_filter($data, $region_filter);
}

header('Content-Type: application/json');
echo json_encode(array('data' => $data));

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