PHP数组排序由两个字段值

问题描述

我有一个这样的数组

Array (
 [0] => Array( "destination" => "Sydney",
               "airlines" => "airline_1",
               "one_way_fare" => 100,
               "return_fare => 300
       ),
 [2] => Array( "destination" => "Sydney",
               "airlines" => "airline_2",
               "one_way_fare" => 150,
               "return_fare => 350
       ),
 [3] => Array( "destination" => "Sydney",
               "airlines" => "airline_3",
               "one_way_fare" => 180,
               "return_fare => 380
       )
)

我

如何排序return_fare递增的价值，one_way_fare ASC？

How can i sort the value by return_fare asc , one_way_fare asc ?

我试过，但我最终得到混合起来的数据..

I tried array_multisort() but i ended up getting mixed up data..

ASORT只适用于一维数组，我需要两个值以上的排序，我怎么能达到这个SQL一样，为了通过FIELD1 ASC，ASC的field2？

asort only works for one dimensional array, i need to sort by two values or more, how can i achieve this like in SQL, order by field1 asc,field2 asc ?

推荐答案

是正确的功能，必须在一定程度上将搞砸了：

array_multisort() is the correct function, you must have messed up somehow:

// Obtain a list of columns
foreach ($data as $key => $row) {
    $return_fare[$key]  = $row['return_fare'];
    $one_way_fare[$key] = $row['one_way_fare'];
}

// Sort the data with volume descending, edition ascending
array_multisort($return_fare, SORT_ASC, $one_way_fare, SORT_ASC, $data);

如果你看看在PHP手册页中的注释​​在array_multisort（），你可以找到一个非常有用的 array_orderby（）功能，可以让你缩短上面眼前这个：

If you take a look at the comments at PHP's manual page for array_multisort(), you can find a very helpful array_orderby() function which allows you to shorten the above to just this:

$sorted = array_orderby($data, 'return_fare', SORT_ASC, 'one_way_fare', SORT_ASC);

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