PHP 使用子数组值按字母顺序排列数组 [英] PHP sort array alphabetically using a subarray value
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问题描述
可能的重复:
如何在 PHP 中对数组和数据进行排序?
如何在 php 中对多维数组进行排序
PHP 按子数组值排序数组
PHP 按值对多维数组进行排序
我的数组看起来像:
Array(
[0] => Array(
[name] => Bill
[age] => 15
),
[1] => Array(
[name] => Nina
[age] => 21
),
[2] => Array(
[name] => Peter
[age] => 17
)
);
我想根据他们的名字按字母顺序对他们进行排序.我看到了 PHP Sort Array By SubArray Value 但它没有多大帮助.任何想法如何做到这一点?
I would like to sort them in alphabetic order based on their name. I saw PHP Sort Array By SubArray Value but it didn't help much. Any ideas how to do this?
推荐答案
这是你的答案,它 100% 有效,我已经测试过了.
Here is your answer and it works 100%, I've tested it.
<?php
$a = Array(
1 => Array(
'name' => 'Peter',
'age' => 17
),
0 => Array(
'name' => 'Nina',
'age' => 21
),
2 => Array(
'name' => 'Bill',
'age' => 15
),
);
function compareByName($a, $b) {
return strcmp($a["name"], $b["name"]);
}
usort($a, 'compareByName');
/* The next line is used for debugging, comment or delete it after testing */
print_r($a);
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