我有以下数组,指示如何对DATA数组进行排序的顺序:
$PARENT_ID_ORDER = array(1, 3, 2);
这是DATA数组,其中包含PARENT_ID键,我想使用PARENT_ID_ORDER按PARENT_ID键排序:
$DATA = array (
array (
'PARENT_ID' => 2;
),
array (
'PARENT_ID' => 2;
),
array (
'PARENT_ID' => 1;
),
array (
'PARENT_ID' => 3;
),
array (
'PARENT_ID' => 1;
),
array (
'PARENT_ID' => 2;
),
array (
'PARENT_ID' => 2;
)
);
预期产出:
array(
[0] => Element Object
(
[PARENT_ID] => 1,
),
[1] => Element Object
(
[PARENT_ID] => 1,
),
[2] => Element Object
(
[PARENT_ID] => 3,
),
[3] => Element Object
(
[PARENT_ID] => 2,
),
[4] => Element Object
(
[PARENT_ID] => 2,
),
[5] => Element Object
(
[PARENT_ID] => 2,
),
[6] => Element Object
(
[PARENT_ID] => 2,
)
);
如何将我的订单数组提供给排序函数,以便按此方式排序?谢谢!
答案 0 :(得分:1)
我认为您正在寻找http://php.net/manual/en/function.usort.php。 如果数组很小,您可以将它与二进制搜索或内置array_search一起使用