PHP 二维数组排序 方便~~

array_multisort() 对二维数组进行排序
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

 

降序可使用:SORT_DESC

 

更多可参考:http://hi.baidu.com/xuleit/item/9af20212fee13b423b176e3b

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