json from file to file in same style in oneline per line

i wanna convert a json file has text like this design json_text https://phponlines.com/result/e2j9RgRnm7

$json_text = '
[
{"id": "1", "name": "john", "bd": []},
{"id": "2", "name": "gary", "bd": [1, 2]}
]';
$json_decoded = json_decode($json_text, true);
var_dump(json_encode($json_decoded)); 

then after i edit it to get same design again but i get different deisng instead in one line

[{"id":"1","name":"john","bd":[]},{"id":"2","name":"gary","bd":[1,2]}]

but what i want is

[
{"id": "1", "name": "john", "bd": []},
{"id": "2", "name": "gary", "bd": [1, 2]}
]

>Solution :

As stated in my comments above, this is not particularly advisable, and writing any portion of a JSON file by hand is even more inadvisable.

But if you do not wish to see the light, then at least the use the minimal amount of darkness.

// polyfill for PHP<8.1
if (!function_exists('array_is_list')) {
    function array_is_list(array $a)     {
        return $a === [] || (array_keys($a) === range(0, count($a) - 1));
    }
}

function do_weird_json(array $input) {
    if( ! array_is_list($input) ) {
        throw new Exception('Input data must be a list');
    }
    
    return sprintf("[\n%s\n]\n", implode(",\n", array_map('json_encode', $input)));
}

$json_text = '
[
{"id": "1", "name": "john", "bd": []},
{"id": "2", "name": "gary", "bd": [1, 2]}
]';
$json_decoded = json_decode($json_text, true);

$json_decoded[1]['name'] = 'bill';

var_dump(do_weird_json($json_decoded));

Output:

string(74) "[
{"id":"1","name":"john","bd":[]},
{"id":"2","name":"bill","bd":[1,2]}
]
"

Again, the best thing to do would be to leave the JSON as the default, not-human-friendly format and use a client-side tool like jq, etc to reformat the JSON for you for viewing purposes.