Get a value of an array [duplicate] - php

Question

This question already has answers here:
How to parse JSON and access results
(3 answers)
Closed 1 year ago.
I got the following array called $resource:
{
"id": 24927,
"availability": [],
"block_cost": 0,
"name": "Nachtklettern 11.08.2020",
"parent_id": 0,
"qty": "20",
"sort_order": 0,
"meta_data": [{
"id": 15548,
"key": "kor_reg_status",
"value": "off"
}, {
"id": 15549,
"key": "qty",
"value": "20"
}, {
"id": 15550,
"key": "_arb_reservation_availability",
"value": []
}, {
"id": 15572,
"key": "kor_reg_status",
"value": "off"
}, {
"id": 15573,
"key": "qty",
"value": "20"
}, {
"id": 15574,
"key": "_arb_reservation_availability",
"value": []
}, {
"id": 32463,
"key": "_fusion",
"value": []
}, {
"id": 96581,
"key": "_edit_lock",
"value": "1615588526:3"
}, {
"id": 97192,
"key": "_edit_last",
"value": "3"
}]
}
and want to get the first value of qty -> 20
If I try
echo $resource[5] or
echo $resource["qty"]
I didn't get the value.
What can I do?

Answer 1

Decode the JSON string first, then retrieval of any property is straightforward:
$resource = '{"id":24927,"availability":[],"block_cost":0,"name":"Nachtklettern 11.08.2020","parent_id":0,"qty":"20","sort_order":0,"meta_data":[{"id":15548,"key":"kor_reg_status","value":"off"},{"id":15549,"key":"qty","value":"20"},{"id":15550,"key":"_arb_reservation_availability","value":[]},{"id":15572,"key":"kor_reg_status","value":"off"},{"id":15573,"key":"qty","value":"20"},{"id":15574,"key":"_arb_reservation_availability","value":[]},{"id":32463,"key":"_fusion","value":[]},{"id":96581,"key":"_edit_lock","value":"1615588526:3"},{"id":97192,"key":"_edit_last","value":"3"}]}';
$res = json_decode($resource);
echo $res->qty; // 20