/**
* @param $post_id int - The id of the post just created/updated
* @param $att_id int - The attachment id of the image
* @param $file string - The local file path to the full size image
*/
function my_gallery_image( $post_id, $att_id, $file ) {
}
add_action( 'pmxi_gallery_image', 'my_gallery_image', 10, 3 );