如何从数组中检索随机值

print_r($rows); results in the following:

的print_r（$行）;结果如下：

Array
(
    [0] => Array
        (
            [bg_image] => uploads/2013/06/Home_background1.jpg
        )

    [1] => Array
        (
            [bg_image] => uploads/2013/06/Home_background2.jpg
        )

    [2] => Array
        (
            [bg_image] => uploads/2013/06/Home_background3.jpg
        )

)

What I'm looking to get help with is randomly selecting one of the values from above. I'm fairly new to php so sorry if this is a basic question.

我正在寻求帮助的是随机选择上面的一个值。我对php很新，很抱歉，如果这是一个基本问题。

4 个解决方案

#1

echo $rows[array_rand($rows)]['bg_image'];

#2

You can use the rand function to select a random index. The following will give you a random index that will be either 0, 1, or 2. Using that as the index to the array will output one of the 3 elements at random.

您可以使用rand函数选择随机索引。下面将给出一个0,1或2的随机索引。使用它作为数组的索引将随机输出3个元素中的一个。

rand(0,2)

#3

use rand() function.

使用rand（）函数。

refer here

请参考这里

PHP.net rand()

PHP.net rand（）

#4

A different way from the other answers

与其他答案不同的方式

$rand = mt_rand(0,2);
echo $rows[$rand]['bg_image'];

#1

echo $rows[array_rand($rows)]['bg_image'];

#2