随机顺序的多维数组 [英] multi dimensional array in random order

问题描述

我要使它的多维数组处于随机顺序.你会怎么做?

I want to make it so that my multi dimensional array is in a random order. How would you do it?

// This is how the array looks like
print_r($slides);

Array
(
    [0] => Array
        (
            [id] => 7
            [status] => 1
            [sortorder] => 0
            [title] => Pants
        )

    [1] => Array
        (
            [id] => 8
            [status] => 1
            [sortorder] => 0
            [title] => Jewels
        )

    [2] => Array
        (
            [id] => 9
            [status] => 1
            [sortorder] => 0
            [title] => Birdhouse
        )

    [3] => Array
        (
            [id] => 10
            [status] => 1
            [sortorder] => 0
            [title] => Shirt
        )

    [4] => Array
        (
            [id] => 11
            [status] => 1
            [sortorder] => 0
            [title] => Phone
        )

)

// This how the result is if I use array_rand()
print_r(array_rand($slides, 5));

Array
(
    [0] => 0
    [1] => 1
    [2] => 2
    [3] => 3
    [4] => 4
)

// This how the result is if I use shuffle()
print_r(shuffle($slides));

1

推荐答案

shuffle()是这里的解决方法.因为shuffle就地更改了数组 并返回布尔值，所以它打印1并返回布尔值，因为它是用

shuffle() is the way to go here. It prints 1 because shuffle changes the array in-place and returns a boolean, as it is written in the documentation:

成功返回 TRUE ，失败返回 FALSE .

我建议您还阅读array_rand() 的文档:

I suggest to also read the documentation of array_rand():

从数组中选择一个或多个随机条目，并返回随机条目的键(或多个键).

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如果使用内置功能，请务必阅读文档.不要只是假设如何工作.我敢打赌，写问题要比查找问题花更多的时间.

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Always read documentation if you use built-in functions. Don't just assume how the work. I bet it took more time to write the question than looking this up.

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