Get specific element in Json string in php problem

This is my data struuture:

array(6) { 
  ["id"]=> string(15) "264729823543848" 
  ["application"]=> array(2) { 
    ["name"]=> string(7) "Prizzer" 
    ["id"]=> string(15) "100398126714422" 
  } 
  ["to"]=> array(2) { 
    ["name"]=> string(18) "Danielle McPherson" 
    ["id"]=> string(15) "100000204975672" 
  } 
  ["from"]=> array(2) { 
    ["name"]=> string(13) "Billy Zearott" 
    ["id"]=> string(10) "1292797153" 
  }
  ["message"]=> string(45) "Become my Prizzer Buddie and win Real Prizes!" 
  ["created_time"]=> string(24) "2011-08-02T06:06:39+0000" 
}

I get this by dumping the var:

$obj = json_decode($returned_content, true);
var_dump($obj);

Now I need to extract only the value "100000204975672" w开发者_开发百科hich is the third id right after "Danielle McPherson". How do I do that?

I had to look at your example a couple of times because of the nesting. Thanks for the edit @K4emic - much easier to read now.

echo $obj['to']['id'];