Loop json object as array in PHP - php

Question

How can i loop the response to get all ids and names?
If the response like this:
{
"Data": [
{
"Id": "4321",
"Name": "Dog"
},
{
"Id": "749869",
"Name": "Cat"
}
]
}
I can get all the ids and names using this code:
foreach (json_decode($response->content)->Data as $resp) {
echo $resp->Id;
echo $resp->Name;
}
But, if the response like this:
{
"Data": {
"dog": {
"Id": "4321",
"Name": "Dog"
},
"cat": {
"Id": "749869",
"Name": "Cat"
}
}
}
How can i get all the ids and names without knowing the amount of the array? Thank you.

Answer 1

You can get PHP to read everything into an (associative where applicable) array.
foreach (json_decode($response->content, true)["Data"] as $resp) { //2nd parameter is to decode as array
echo $resp["Id"];
echo $resp["Name"];
}
Example run: https://eval.in/954621
Alternatively you can do the lazy thing and just cast:
foreach ((array)json_decode($response->content)->Data as $resp) {
echo $resp->Id;
echo $resp->Name;
}

Answer 2

Well if you want to extract all ids into one array (I assume you mean all into one array), to use in a database query as an example. I would recommend you doing like this.
$ids = array_values(array_map(function($animal){
return intval($animal['Id']);
}, json_decode($response->content, true)['Data']));
var_dump($ids);

Answer 3

you do the same ! foreach loop would work on both.
the json response supposed to have the same format every time, unless you have a really weird API.
<?php
$response = json_decode($json);
foreach($response as $animal => $data)
{
echo $animal;
echo $data->id;
echo $data->name;
}