php - 如何制作包含最大长度的组合数组？

Question

我有这三个数组:

$arr1 = ['one', 'two', 'three'];
$arr2 = ['three', 'four'];
$arr3 = ['two', 'five', 'six', 'seven'];

这是预期的结果:

/* Array
   (
       [0] => one
       [1] => two
       [3] => three
       [4] => four
       [5] => five
       [6] => six
       [7] => seven
   )

---

Here我的解决方案没有按预期工作:

print_r( array_unique( $arr1 + $arr2 + $arr3) );
/* Array
   (
       [0] => one
       [1] => two
       [2] => three
       [3] => seven
   )

我该怎么做？

Answer 1

使用这个:

array_unique(array_merge($arr1,$arr2,$arr3), SORT_REGULAR);

这会将数组合并为一个，然后删除所有重复项

已测试 Here

输出:

Array
(
    [0] => one
    [1] => two
    [2] => three
    [4] => four
    [6] => five
    [7] => six
    [8] => seven
)