Convert array to int php - php

Question

Code:
public function resolve($root, $args, $context, ResolveInfo $resolveInfo, Closure $getSelectFields)
{
$valornovo = $args['sacar'];
$user = User::where('id', $args['id']);
$fields2 = 'saldo';
$fields = $getSelectFields();
$valorantigo = (object) $user->with($fields->getRelations())->select($fields2)->first();
$foo = json_decode($valorantigo, true);
$foo2 = array_map('intval', $foo);
return $foo2;
}
It returns the correct value. But I need to convert it to a number (int) to do a subtraction operation.
I converted to array with this:
$foo = json_decode($valorantigo, true);
Now I need to convert to int. I tried (int) and I couldn't, it returns null.
Edit: what I want is that it returns the value, however it is an integer:
https://prnt.sc/t0ehbd
Vardump:
https://prnt.sc/t0ehhf
I don't know how yet, but he gets exactly the amount I need. But I can't do operations because it is an array
I just want this value, not the whole array https://prnt.sc/t0es0f

Answer 1

json_decode($valorantigo, true) takes a JSON encoded string and returns an associative array.
Based on what I can tell from your data, your associative array contains strings as keys and associative arrays as values as follows:
{
"data": {
"users": [
{
"name": "Rodrigo Cardoso",
"email": "rodrigo.cardoso#imasters.com.br",
"saldo": 10,
"id": 3,
"company": null
},
{
"name": "Reinaldo Silotto",
"email": "reinaldo.silotto#imasters.com.br",
"saldo": 0,
"id": 2,
"company": null
},
{
"name": "Alefe Souza",
"email": "contact#alefesouza.com",
"saldo": 0,
"id": 1,
"company": null
}
]
}
}
My guess is that you want to return the value of a specific key of a nested array, which you can do like this:
array_map(function ($user) {
return $user['saldo'];
}, $foo['data']['users']);
This will return an array with the saldo value for each user.

Answer 2

array_values — Return all the values of an array :
$array = array("id" => 4, "days" => 64);
print_r(array_values($array));
The above example will output:
Array
(
[0] => 4
[1] => 64
)