Question

I have some data which was json decoded and looks like this:

stdClass Object
(
    [6] => stdClass Object
        (
            [13] => stdClass Object
                (
                    [buildingId] => 1
                )

        )

    [8] => stdClass Object
        (
            [20] => stdClass Object
                (
                    [Id] => 1
                )

        )

Thing is i don’t know how to loop to get the information to use it in my script.

I need to get for example:

$key, $innerkey, $Id = 1
Object [8][20].Id = 1

The two numbers are X;Y co ordinates so its important i get those values aswell as the id.

I managed to get the first key:

$obj = JSON_decode($_GET['data']);  
    foreach($obj as $key) { 
        echo $key;                      
    }

How do i get the innerkey assigned to a variable ?

Answer 1

Change json_decode($_GET['data']); to json_decode($_GET['data'], true);

If the second parameter is true then it return the array else it is object.

$obj = json_decode($_GET['data'], true);  
    foreach($obj as $key=>$val) { 
        foreach($val as $k=>$v){
           echo $k." : ".$v['Id'];
           echo "<br>";
        }                      
    }

Ref: http://php.net/manual/en/function.json-decode.php