<?php $array1 = [1, 2, 3, 4]; $array2 = [6, 3]; $array3 = [3, 5]; $array1 = array_diff($array1, $array2, $array3); $array2 = array_diff($array2, $array1, $array3); $array3 = array_diff($array3, $array1, $array2); print_r($array1); print_r($array2); print_r($array3);