PHP - How to edit Array Elements from JSON File?

Question

I'm learning more about parsing JSON in PHP, and I encountered a problem editing a certain file.

I wrote a code that makes it possible to edit only the values I want from a JSON file, and for some reason, when I try to edit the value from "IdList", my code replaces that value without the square brackets, invalidating the JSON structure.

How could I get my code to correctly override this value while keeping it inside the square bracket?

My JSON File

{
"isVisible": false,
"Name": "Lorem ipslum",
"Int": 0,
"IdList": [10, 30, 70],
"UseKeys": true,
}

My PHP code

<?php

$commandline = ($_GET[("string")]);
$json_object = file_get_contents('file.json');

$data = json_decode($json_object, true);
$data['IdList'] = $commandline;
$json_object = json_encode($data, JSON_UNESCAPED_UNICODE);
file_put_contents('file.json', $json_object);
echo('success');
?>

When i try to change IdList to '70, 80, 90' for example, the Json file is saved like this:

"IdList":"70, 80, 90"

It should be saving like this:

"IdList": [70, 80, 90]

When I try to modify the text from the other values, it works normally.

Milad · Accepted Answer · 2022-04-09 06:55:42Z

1

you are setting a string for "IdList"

this would work for you:

$data['IdList'] = array_map('intval', explode(',',$commandline));

edited Apr 9, 2022 at 6:55

answered Apr 9, 2022 at 6:28

Milad

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1 Comment

toxdotnet Over a year ago

Works great for the problem I was having. Thank you! :D

Dorian Rina · Accepted Answer · 2022-04-09 06:53:28Z

1

You can replace this line:

$data['IdList'] = $commandline;

With:

$data['IdList'] = json_decode('[' . $commandline . ']', true);

edited Apr 9, 2022 at 6:53

answered Apr 9, 2022 at 6:45

Dorian Rina

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1 Comment

toxdotnet Over a year ago

Your solution was helpful and I will definitely use it soon for other scenarios. Thanks a lot for your contribution :)

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