By Collection

array(4) { [0]=> string(5) "14129" [1]=> string(5) "14132" [2]=> string(5) "14133" [3]=> string(5) "14131" } array(4) { [14129]=> string(6) "160 CM" [14132]=> string(6) "172 CM" [14133]=> string(6) "200 CM" [14131]=> string(6) "140 CM" } array(4) { [14131]=> string(6) "140 CM" [14129]=> string(6) "160 CM" [14132]=> string(6) "172 CM" [14133]=> string(6) "200 CM" }

array(2) { [0]=> string(5) "14068" [1]=> string(5) "14066" } array(2) { [14068]=> string(6) "160 CM" [14066]=> string(6) "120 CM" } array(2) { [14066]=> string(6) "120 CM" [14068]=> string(6) "160 CM" }