array(7) {
  [0]=>
  string(9) "thumbnail"
  [1]=>
  string(6) "medium"
  [2]=>
  string(12) "medium_large"
  [3]=>
  string(5) "large"
  [4]=>
  string(14) "post-thumbnail"
  [5]=>
  string(12) "table-casino"
  [6]=>
  string(10) "table-game"
}