Cannot use object of type stdClass as array - JSON [duplicate]

Question

I'm working with .json files and I have the following function:

//Rights array (WRITE, CREATE, DELETE, ADDUSERS, DELETE USERS)
function addUser($requester, $username, $rights) {
    $file = $requester->getFolder() . "Projects/" . $this->name . "/Data/users.json";
    $json = json_decode(file_get_contents($file, false));
    $json[$username] = array("write" => $rights[0], "create" => $rights[1], "delete" => $rights[2], "adduser" => $rights[3], "deleteuser" => $rights[4]);
    file_put_contents($file, json_encode($json));
}

Whenever I run the code that uses that function, I get the following error:

Fatal error: Cannot use object of type stdClass as array in...

It would be nice to show us the whole error with content of the line. — Michas
– Michas, Commented Apr 27, 2015 at 23:14

Devon Bessemer · Accepted Answer · 2015-04-27 23:17:08Z

2

The second parameter of json_decode defaults to false, meaning it will produce an object. Use true to produce an array.

The error comes from $json[$username] where you are accessing $json as an array. When it is an object, you would access it like: $json->$username.

edited Apr 27, 2015 at 23:17

answered Apr 27, 2015 at 23:11

Devon Bessemer

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8 Comments

Jake Cross Over a year ago

I thought it was the other way around... I should've checked :P Thanks man!

Jake Cross Over a year ago

I'm still getting the error. I kept everything the same except: '$json = json_decode(file_get_contents($file, true));' And the error is on this line (39): '$json[$username] = array("write" => $rights[0], "create" => $rights[1], "delete" => $rights[2], "adduser" => $rights[3], "deleteuser" => $rights[4]);'

Devon Bessemer Over a year ago

Youre using true on file_get_contents, not json_decode.

Jake Cross Over a year ago

Now I've got two errors after I updated with that code: 'Warning: Illegal string offset 'adad' in D:\xampp\htdocs\Collabs\Examples\Project\Scripts\Classes\Project.php on line 39' ------ 'Notice: Array to string conversion in D:\xampp\htdocs\Collabs\Examples\Project\Scripts\Classes\Project.php on line 39'

Devon Bessemer Over a year ago

Search for those error messages, look into your line number, and try to figure out what the error message is telling you. You'll eventually need to figure out how to resolve debugging on your own.

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