PHP 中的数组打乱顺序

发布于 2024-10-22 22:30:47 字数 303 浏览 5 评论 0原文

我有以下代码：

<?php
foreach($bb['slides'] as $b):
$url = "domain.com/" . $b->image . ";
echo($url);
endforeach;
?>

输出如下：域名.com/image1.jpg 域名.com/image2.jpg domain.com/image3.jpg

我正在尝试随机化输出的顺序。在 foreach 语句之前，我尝试使用 shuffle($bb); 对数组进行洗牌。但这没有用。任何帮助表示赞赏。

原文

I have the following code:

<?php
foreach($bb['slides'] as $b):
$url = "domain.com/" . $b->image . ";
echo($url);
endforeach;
?>

The output is as follows:
domain.com/image1.jpg
domain.com/image2.jpg
domain.com/image3.jpg

I am trying to randomize the order of the output. Before the foreach statement I tried to shuffle the array using shuffle($bb); but that did not work. Any help is appreciated.

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余生再见 2024-10-29 22:30:47

由于 $bb 是数组的数组，shuffle() 不会随机化子数组，请尝试对嵌套数组进行 shuffle ，如下所示：

shuffle($bb['slides']);

As $bb is an array of arrays, shuffle() won't randomise the sub-array, try shuffle on the nested array as follows:

shuffle($bb['slides']);

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悟红尘 2024-10-29 22:30:47

当您应该这样做时，您可能会打乱外部 $bb 数组：

shuffle($bb['slides']);
foreach($bb['slides'] as $b):

You probably shuffled the outer $bb array, when you should have done:

shuffle($bb['slides']);
foreach($bb['slides'] as $b):

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暖阳 2024-10-29 22:30:47

shuffle($array_name); // will shuffle array

http://www.php.net/manual/en/function.shuffle.php

foreach 也应该是

for($array_name as $array_item) {
// do stuff
}

shuffle($array_name); // will shuffle array

http://www.php.net/manual/en/function.shuffle.php

Also the foreach should be

for($array_name as $array_item) {
// do stuff
}

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玩世 2024-10-29 22:30:47

<?php
shuffle($bb['slides']);
foreach($bb['slides'] as $b) {
    echo $url = "domain.com/" . $b->image . ";
}
?>

查看此博客以获取示例说明。

http://wamp6.com/php/str_shuffle-php/ 检查数组随机播放

<?php
shuffle($bb['slides']);
foreach($bb['slides'] as $b) {
    echo $url = "domain.com/" . $b->image . ";
}
?>

Check this blog for explanation with example.

http://wamp6.com/php/str_shuffle-php/ Check for array shuffle

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情绪失控 2024-10-29 22:30:47

看起来您需要执行shuffle($bb['slides'])。

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森林很绿却致人迷途 2024-10-29 22:30:47

以随机顺序显示内容

<?php
$myContentList = array (
    'One',
    'Two',
    'Three',
    'Four'
);
shuffle ($myContentList);
foreach ($myContentList as $displayAtRandomOrder) {
echo '<div>' . $displayAtRandomOrder . '</div>';
}
?>

以随机顺序显示图像

<?php
$myImagesList = array (
    'one.png',
    'two.png',
    'three.jpg',
    'four.gif'
);
shuffle ($myImagesList);
foreach ($myImagesList as $displayImagesAtRandomOrder) {
echo '<img src="images/' . $displayImagesAtRandomOrder . '" width="200" height="40" border="0" />';
}
?>

Display content at random order

<?php
$myContentList = array (
    'One',
    'Two',
    'Three',
    'Four'
);
shuffle ($myContentList);
foreach ($myContentList as $displayAtRandomOrder) {
echo '<div>' . $displayAtRandomOrder . '</div>';
}
?>

Display images at random order

<?php
$myImagesList = array (
    'one.png',
    'two.png',
    'three.jpg',
    'four.gif'
);
shuffle ($myImagesList);
foreach ($myImagesList as $displayImagesAtRandomOrder) {
echo '<img src="images/' . $displayImagesAtRandomOrder . '" width="200" height="40" border="0" />';
}
?>

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