Get JSON value from array in PHP - php

Question

I have the following JSON
[
{
"part_number": {
"id": "1",
"text": "962-00031-17A004"
},
"categoria": null,
"codigo_cti": "",
"fabricante": null,
"modelo": null,
"numero_serie": "",
"obs": ""
}
]
And I use the code bellow to collect data from it. If I select to extract obs, it works fine. I would like to know how can I collect the text and ID from part_number.
$produtos = json_decode($_POST['produtos'], true);
foreach($produtos as $produto){
echo $produto["obs"]; //WORKS FINE
echo $produto["part_number"]["text"]; //DOES NOT WORK
}

Answer 1

Turn it into an object and not array first - its easier and Object Orientated is the way to go.
Here is a working example;
$json = '[
{
"part_number": {
"id": "1",
"text": "962-00031-17A004"
},
"categoria": null,
"codigo_cti": "",
"fabricante": null,
"modelo": null,
"numero_serie": "",
"obs": ""
}
]';
$produtos = json_decode($json, false);
foreach($produtos as $produto){
echo $produto->part_number->id;
}