Get Json Object from external URL with PHP - php

Question

I have an URL that returns the JSON object below:
{
"addressList": {
"addresses": [
{
"id": 0000000,
"receiverName": "Name Example",
"country": {
"id": "BRA",
"name": "Brasil"
},
"state": {
"id": "SP"
},
"city": "São Paulo",
"zipcode": "00000000",
"type": "Residential",
"street": "000, St Example",
"number": 00,
"neighborhood": "Example",
"hash": "1bf09357",
"defaultAddress": false,
"notReceiver": false
}
]
}
}
I want to get the state value, how can I retrieve that with PHP?
I tried, something like this, but I couldn't get the state value, that should be SP in this case.
$string = '{ "addressList": { "addresses": [ { "id": xxxxxx, "receiverName": "XXXXX XXXXX", "country": { "id": "BRA", "name": "Brasil" }, "state": { "id": "SP" }, "city": "São Paulo", "zipcode": "03164xxx", "type": "Residential", "street": "Rua xxx", "number": xx, "neighborhood": "xxxxx", "hash": "xxxxx", "defaultAddress": false, "notReceiver": false } ] } }';
$json_o = json_decode($string);
$estado = $json_o->state;
How can I achieve the result I want?

Answer 1

Your JSON is not valid - you can validate it on jsonlint.com (it's invalid due to incorrectly formatted numeric values - "id" : 000000).
From then on, you can decode the value and access your data:
$json_o = json_decode($string);
$estado = $json_o->addressList->addresses[0]->state->id;
If you don't have access to the code that generates the JSON, you can attempt to run a regex to match, replace & wrap the numerical values with ":
$valid_json = preg_replace("/\b(\d+)\b/", '"${1}"', $str);
Note: The above is just an example - you'll have to figure out a case where a numerical value is already wrapped by ".

Answer 2

Your JSON has a couple of syntax errors:
"id": 0000000
"number": 00
JSON doesn't support leading zeros. If precise formatting is important, use strings:
"number": "00"
"id": "0000000"
Alternatively, use well-formed integers in the JSON (saves space) and convert them to formatted strings in PHP.
Once you've fixed your JSON, you can access the state->id value of the first address as I do below. When you decode JSON from an untrusted source, be prepared to do some error handling:
$json_string ="..."; //your source, to be decoded
$json_o= json_decode($json_string);
if(is_null($json_o)): //there was an error decoding
$errno = json_last_error();
$err_msg = json_last_error_msg();
die("Json decode failed: Error #$errno: $err_msg");
endif;
//we get here if json_decode succeeded. To get "SP", do...
$stateID = $json_o->addressList->addresses[0]->state->id;

Answer 3

Try:
$json_o = json_decode($string, true);
$estado = $json_o['addressList']['addresses'][0]['state']['id'];