array(8) { [0]=> string(9) "thumbnail" [1]=> string(6) "medium" [2]=> string(12) "medium_large" [3]=> string(5) "large" [4]=> string(9) "1536x1536" [5]=> string(9) "2048x2048" [6]=> string(10) "user_thumb" [7]=> string(12) "fellow_thumb" }