Quick JSON/PHP question

Thanks guys. My problem now is parsing multiple JSON strings.
Here's what the JSON is:

{
    "songs": [
        {
            "by": "artist",
            "cover": "albumart",
            "id": 1,
            "rank": 1,
            "title": "song name",
            "type": "song"
        },
        {
            "by": "artist1",
            "cover": "albumart1",
            "id": 2,
            "rank": 2,
            "title": "song name1",
            "type": "song"
        }
    ]
}

Code (markup):

I can parse single entries but as soon as it has two the page goes blank. I have tried using a for each loop with JSON decode but it only works when there is one.
Here is the parser that doesn't work:

$json = '{
    "songs": [
        {
            "by": "artist",
            "cover": "albumart",
            "id": 1,
            "rank": 1,
            "title": "song name",
            "type": "song"
        },
        {
            "by": "artist1",
            "cover": "albumart1",
            "id": 2,
            "rank": 2,
            "title": "song name1",
            "type": "song"
        }
    ]
}';
$obj = json_decode($json);
foreach($obj->{'by'} as $val){
    echo $val;
    }

Code (markup):

Any help is greatly appreciated

 

ok, you aren't quite grasping how the JSON output is indexed here. Your foreach is returning the object which contains a 'songs' object. You need to index the object by each 'song', then echo out that song's 'by' object.

$obj=json_decode($json);
foreach ($obj->songs as $song) {
  echo $song->by;
}

Code (markup):

I think that's what you are trying to do. Been a while since I've dealt with JSON though.