PHP - 合并重复的数组键多维数组 [英] PHP - Merge duplicate array keys in a multidimensional array
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问题描述
我有一个多维数组名为$歌曲,它输出以下内容:
阵列
(
[0] =>排列
(
[迈克尔·杰克逊] =>惊悚
) [1] =>排列
(
[迈克尔·杰克逊] =>和你一起嗨
) [2] =>排列
(
[泰迪彭德格拉斯] =>爱TKO
) [3] =>排列
(
[ACDC] =>早在黑
)
)
我想合并具有重复键的阵列,这样我就可以得到如下:
阵列
(
[0] =>排列
(
[迈克尔·杰克逊] =>排列
(
[0] =>惊悚
[1] =>和你一起嗨
)
) [1] =>排列
(
[泰迪彭德格拉斯] =>爱TKO
) [2] =>排列
(
[ACDC] =>早在黑
)
)
我如何做到这一点?
给我的code输出数组像加分点:
< H2>迈克尔·杰克逊< / H>
< UL>
<立GT;惊悚< /李>
<立GT;惊悚< /李>
< / UL>< H2>泰迪彭德格拉斯< / H>
< UL>
<立GT;爱TKO< /李>
< / UL>< H2>&ACDC LT; / H>
< UL>
<立GT;早在黑色< /李>
< / UL>
解决方案
这应该这样做,这是不是你想要什么,但我没有看到一个原因,你需要的索引结果数组数字,然后由艺术家。
$源=阵列(
阵列('迈克尔·杰克逊'=>'惊悚'),
阵列('迈克尔·杰克逊'=>'你一起摇滚),
阵列('泰迪彭德格拉斯'=>爱TKO),
阵列('ACDC'=>回到黑色)
);$结果=阵列();的foreach($源作为$项目){
$艺术家=键($项目);
$专辑=电流($项目); 如果(!使用isset($结果[$艺术家])){
$结果[$艺术家] =阵列();
}
$结果[$艺术家] [] = $专辑;
}
您可以循环 $结果
数组,建立自己的HTML是这样的:
的foreach($结果为$艺术家=> $专辑){
呼应'< H2>'$艺术家。'< / H>';
呼应'< UL>';
的foreach($专辑为$专辑){
呼应'<立GT;'$专辑。'< /李>';
}
呼应'< / UL>';
}
这将导致你所描述的类似名单。
I have a multidimensional array called $songs, which outputs the following:
Array
(
[0] => Array
(
[Michael Jackson] => Thriller
)
[1] => Array
(
[Michael Jackson] => Rock With You
)
[2] => Array
(
[Teddy Pendergrass] => Love TKO
)
[3] => Array
(
[ACDC] => Back in Black
)
)
I would like to merge the arrays which have duplicate keys, so I can get the following:
Array
(
[0] => Array
(
[Michael Jackson] => Array
(
[0] => Thriller
[1] => Rock With You
)
)
[1] => Array
(
[Teddy Pendergrass] => Love TKO
)
[2] => Array
(
[ACDC] => Back in Black
)
)
How do I do this?
Bonus points for giving me the code to output the array like:
<h2>Michael Jackson</h2>
<ul>
<li>Thriller</li>
<li>Thriller</li>
</ul>
<h2>Teddy Pendergrass</h2>
<ul>
<li>Love TKO</li>
</ul>
<h2>ACDC</h2>
<ul>
<li>Back in Black</li>
</ul>
解决方案
This should do it, it's not exactly what you want but I don't see a reason why you'd need to index the resulting array numerically, and then by artist.
$source = array(
array('Michael Jackson' => 'Thriller'),
array('Michael Jackson' => 'Rock With You'),
array('Teddy Pendergrass' => 'Love TKO'),
array( 'ACDC' => 'Back in Black')
);
$result = array();
foreach($source as $item) {
$artist = key($item);
$album = current($item);
if(!isset($result[$artist])) {
$result[$artist] = array();
}
$result[$artist][] = $album;
}
And you can loop the $result
array and build your HTML like this:
foreach($result as $artist => $albums) {
echo '<h2>'.$artist.'</h2>';
echo '<ul>';
foreach($albums as $album) {
echo '<li>'.$album.'</li>';
}
echo '</ul>';
}
Which would result in a similar list that you described.
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