How to update specific JSON object array inside JSON file?

Question

I have a JSON object array abc_def_ghi present in the json file ../hello/xyz.json. The content inside the json file is:

{
    "abc_def_ghi": ["nada", "no", "yes", "nada", "nada", "no"],
    "world_status": null
}

Below is how I am loading the json in my variable:

if (file_exists('../hello/xyz.json')) {
    $data = json_decode(file_get_contents('../hello/xyz.json'));
}

I have a code below which is addding a default value (on specific condition) in the JSON object array. Now I need to overwrite my JSON file with this new content.

if ((date('j')==29)) {
    $data->abc_def_ghi = array_fill(0, count($data->abc_def_ghi) , nada);  // Line A
    file_put_contents('../hello/xyz.json', $data);
}

Problem Statement:

I tried above code but somehow it is not overwriting my file but it deleted all the contents of the file.

After adding default value, my JSON should look like this in the file:

{
    "abc_def_ghi": ["nada", "nada", "nada", "nada", "nada", "nada"],
    "world_status": null
}

Evert · Accepted Answer · 2020-04-09 04:08:59Z

1

You need to json_encode the data before you write it:

file_put_contents('../hello/xyz.json', json_encode($data));

answered Apr 9, 2020 at 4:08

Evert

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2 Comments

Evert Over a year ago

@john: Try it and you tell me

user1950349 Over a year ago

@Every Hi, I hope all is well. I have one more question. It's not similar. I am wondering if you can have a look.

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