一维数组
例子
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代码如下
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复制代码
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<?php
function my_sort($a, $b)
{
if ($a == $b) return 0;
return ($a > $b) ? -1 : 1;
}
$people = array("Swanson" => "Joe",
"Griffin" => "Peter", "Quagmire" => "Glenn",
"swanson" => "joe", "griffin" => "peter",
"quagmire" => "glenn");
uksort($people, "my_sort");
print_r ($people);
?>输出：
Array
(
[swanson] => joe
[quagmire] => glenn
[griffin] => peter
[Swanson] => Joe
[Quagmire] => Glenn
[Griffin] => Peter
)
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如下面这个二维数组，需要按照sort键名来排序，那么array_multisort() 就无法直接实现了：
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代码如下
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复制代码
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$data[5] = array('volume' => 67, 'edition' => 2);
$data[4] = array('volume' => 86, 'edition' => 1);
$data[2] = array('volume' => 85, 'edition' => 6);
$data[3] = array('volume' => 98, 'edition' => 2);
$data[1] = array('volume' => 86, 'edition' => 6);
$data[6] = array('volume' => 67, 'edition' => 7);
// 准备要排序的数组
foreach ($data as $k => $v) {
$edition[] = $v['edition'];
}
array_multisort($edition, SORT_ASC, $data);
print_r($data);将输出：
Array
(
[0] => Array
(
[volume] => 86
[edition] => 1
)
[1] => Array
(
[volume] => 67
[edition] => 2
)
[2] => Array
(
[volume] => 98
[edition] => 2
)
[3] => Array
(
[volume] => 85
[edition] => 6
)
[4] => Array
(
[volume] => 86
[edition] => 6
)
[5] => Array
(
[volume] => 67
[edition] => 7
)
)
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