json_decode issue

[7blake]

I'm grabbing an object with objects that is converted to JSON, then decoded in PHP

 

newObject = {"firstObject":{"Color" : "red"}, "secondObject":{"Color":"blue"}};

 

anyhow, I can get this to PHP fine, and access it with the foreach loops. But I can't access "firstObject" or "secondObject".

 $someArray = json_decode($_POST['containerPositions'], true);
     foreach($someArray as $value){
        foreach ($value as $secondKey){
        echo getClass($value) . " " . $secondKey;}
    }

Could someone tell me what is the correct method for accessing them?