Parse a multi level json in php - php

Question

I have this json file and I would like to get back "host_name" values for all items. Below, my php code, I tried some things, using true to decode json in an array or without it and use a foreach(), but I can't do it.
{
"href": "https://webservice:8080",
"items": [
{
"Hosts": {
"cluster_name": "cluster1",
"host_name": "server1"
},
"href": "https://server1:8080"
},
{
"Hosts": {
"cluster_name": "cluster1",
"host_name": "server2"
},
"href": "https://server2:8080"
},
{
"Hosts": {
"cluster_name": "cluster1",
"host_name": "server3"
},
"href": "https://server3:8080"
}
]
}
Here is my php code. Would like to do it as simple as possible. My goal is to use last values of a json ('host_name') to display all of them.
<?php
$content = file_get_contents("test.json");
$content = utf8_encode($content);
$result = json_decode($content, true);
var_dump($result);
echo "<br><br><br>";
#echo $result["items"]["Hosts"][0]["host_name"];
foreach($result as $r) {
echo $r['items']['Hosts']['cluster_name'].'<br>';
}
?>
Thanks.

Answer 1

You are just looping over the wrong array, it should be
foreach($result['items'] as $item) {
echo $item['Hosts']['host_name'];
}

Answer 2

$result need to be $result['items']
foreach($result['items'] as $r) {
echo $r['Hosts']['cluster_name'];
echo PHP_EOL;
}
Output:- https://eval.in/837593

Answer 3

As mentioned above, you are looping through the wrong array. You can loop through the object like this as well:
$obj = json_decode(utf8_encode(file_get_contents("test.json")));
foreach($obj->items as $item)
{
var_dump($item->Hosts->host_name);
}

Answer 4

Just to show an alternative method, you can use array_column() and implode() to omit the trailing <br> that will be displayed with the foreach loop methods.
Code: (Demo)
$items=json_decode($json,true)['items'];
echo implode("<br>",array_column(array_column($items,'Hosts'),'host_name'));
Output:
server1<br>server2<br>server3