$a = [1,2,3]; $b = [2,3,7,1,5]; $arr3 = array_merge(array_diff($a,$b),array_diff($b,$a));
$a = [1,2,3]; $b = [2,3,7,1,5]; $arr3 = array_merge(array_diff($a,$b),array_diff($b,$a));
原文：https://www.cnblogs.com/gaogaoxingxing/p/12482098.html