array $data, int $post_id, string|array $size )
Filters the output of image_get_intermediate_size()
See also See also
(array) Array of file relative path, width, and height on success. May also include file absolute path and URL.
(int) The post_id of the image attachment
(string|array) Registered image size or flat array of initially-requested height and width dimensions (in that order).