How to correctly change json arrays so that indexing is not added?

Question

PHP

I have a json like this:

,{
  "id": 12345678,
  "color": "red",
  "model": {
    "id": 1,
    "t": "321"
  }
},

,{
  "id": 323,
  "color": "green",
  "model": {
    "id": 2,
    "t": "654"
  }
},

I want to remove, for example, all elements where color = green
I use json decode and save the data into an array $result = array(): I
use iteration and unset($result[$i]);
at the output after json encode I get the correct result, but indexing appears:

"4":{
  "id": 12345678,
  "color": "red",
  "model": {
    "id": 1,
    "t": "321"
  }
}

Answer 1

At the end do
sort($result)

Answer 2

array_values()

$json = json_encode(array_values($data), JSON_UNESCAPED_UNICODE);