閲覧数:1251
投稿日:2020-06-05
更新日:2020-06-05
2次元配列を指定キーでソートするuser定義関数
1つのキーを基準にソートする
コード
$dataAryAll=
[
0 =>
[
'id' => '2',
'topic_news_date' => '2014-07-09',
],
1 =>
[
'id' => '5',
'topic_news_date' => '2017-12-02',
],
2 =>
[
'id' => '5',
'topic_news_date' => '2019-12-26',
],
3 =>
[
'id' => '5',
'topic_news_date' => '2017-12-26',
],
];
var_export($dataAryAll);
//指定キーに対応する値を基準に、2次元配列をソートする
function sortAryAllByKeyU($keyName, $sortOrder, $ary) {
foreach ($ary as $key => $val) {
$keyAry[$key] = $val[$keyName];
}
array_multisort($keyAry, $sortOrder, $ary);
return $ary;
}
//'topic_news_date'を降順ソートする
$resultAryAll = sortAryAllByKeyU('topic_news_date', SORT_DESC, $dataAryAll);
var_export($resultAryAll);
結果
//ソート前2次元配列
array (
0 =>
array (
'id' => '2',
'topic_news_date' => '2014-07-09',
),
1 =>
array (
'id' => '5',
'topic_news_date' => '2017-12-02',
),
2 =>
array (
'id' => '5',
'topic_news_date' => '2019-12-26',
),
3 =>
array (
'id' => '5',
'topic_news_date' => '2017-12-26',
),
)
//ソート後2次元配列
array (
0 =>
array (
'id' => '5',
'topic_news_date' => '2019-12-26',
),
1 =>
array (
'id' => '5',
'topic_news_date' => '2017-12-26',
),
2 =>
array (
'id' => '5',
'topic_news_date' => '2017-12-02',
),
3 =>
array (
'id' => '2',
'topic_news_date' => '2014-07-09',
),
)