array(4) { [0]=> array(1) { ["attached_post"]=> int(3006) } [1]=> array(1) { ["attached_post"]=> int(2687) } [2]=> array(1) { ["attached_post"]=> int(3019) } [3]=> array(1) { ["attached_post"]=> int(68) } } array(4) { [0]=> array(1) { ["attached_post"]=> int(2160) } [1]=> array(1) { ["attached_post"]=> int(2324) } [2]=> array(1) { ["attached_post"]=> int(47) } [3]=> array(1) { ["attached_post"]=> int(68) } }