如何从 PHP 中的多维数组中删除重复值

问题描述

如何在 PHP 中删除多维数组中的重复值?

How can I remove duplicate values from a multi-dimensional array in PHP?

示例数组:

Array
(
    [0] => Array
    (
        [0] => abc
        [1] => def
    )

    [1] => Array
    (
        [0] => ghi
        [1] => jkl
    )

    [2] => Array
    (
        [0] => mno
        [1] => pql
    )

    [3] => Array
    (
        [0] => abc
        [1] => def
    )

    [4] => Array
    (
        [0] => ghi
        [1] => jkl
    )

    [5] => Array
    (
        [0] => mno
        [1] => pql
    )

)

推荐答案

这是另一种方式.不保存中间变量.

Here is another way. No intermediate variables are saved.

我们使用它对来自各种重叠查询的结果进行重复数据删除.

We used this to de-duplicate results from a variety of overlapping queries.

$input = array_map("unserialize", array_unique(array_map("serialize", $input)));

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