PHP 二维数组排序 方便~~
时间：2011-03-20 来源：李惟
array_multisort() 对二维数组进行排序
数组$roughData，我们打算按照accurancy排序。
（1）提取accuracy列数组
foreach ($roughData as $key => $row) {
$usernames[$key] = $row['username'];
$accuracy[$key] = $row['accuracy'];
}
当print_r($roughData);后我们将得到一个按accuracy升序排序的二维数组
数组$roughData，我们打算按照accurancy排序。
Array
(
[0] => Array
(
[username] => 10yl
[accuracy] => 0.00
)
[1] => Array
(
[username] => 11yl
[accuracy] => 1.00
)
[2] => Array
(
[username] => 12yl
[accuracy] => 0.00
)
[3] => Array
(
[username] => 13yl
[accuracy] => 1.00
)
)方法：（1）提取accuracy列数组
foreach ($roughData as $key => $row) {
$usernames[$key] = $row['username'];
$accuracy[$key] = $row['accuracy'];
}
（2）进行排序array_multisort($accuracy, SORT_ASC,$roughData);
当print_r($roughData);后我们将得到一个按accuracy升序排序的二维数组
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