PHP使用子数组值按字母顺序对数组进行排序

Question

Possible Duplicate:
How can I sort arrays and data in PHP?
How do I sort a multidimensional array in php
PHP Sort Array By SubArray Value
PHP sort multidimensional array by value

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但这并没有太大帮助。 任何想法如何做到这一点？

Answer 1

这是你的答案，它 100% 有效，我已经测试过了。

<?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);