回答編集履歴
4
補足
test
CHANGED
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@@ -143,3 +143,55 @@
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を参考にソートして、ソート後の配列を必要な数だけ取り出す という感じで実装できるかと思います。
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データの持ち方を変えればもっと楽な例
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---
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```PHP
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<?php
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//元のデータがこんな感じであるとして
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$arr = [
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['val'=>'a1','date'=>'2020-02-25 01:00:00'],
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['val'=>'a2','date'=>'2020-02-25 02:00:00'],
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['val'=>'a3','date'=>'2020-02-25 03:00:00']
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];
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foreach($arr as $row){
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$newArr[$row['val']] = $row;
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}
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$new = ['val'=>'a4','date'=>'2020-02-25 04:00:00'];
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//データが無いときは追加であるときは更新
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$newArr[$new['val']] = $new;
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var_dump($newArr);
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```
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3
追記
test
CHANGED
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@@ -26,7 +26,11 @@
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$new = ['val'=>'a
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$new = ['val'=>'a4','date'=>'2020-02-25 04:00:00'];
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$isInArray = false;
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foreach($arr as $key => $row ){
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@@ -34,7 +38,17 @@
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$arr[$key]['date'] = $new['date'];
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$isInArray = true;
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}
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}
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if($isInArray === false){
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$arr[] = $new;
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}
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@@ -44,9 +58,11 @@
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/*
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array(
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array(4) {
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[0] =>
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@@ -72,7 +88,7 @@
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'date' =>
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string(19) "2020-02-25 0
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string(19) "2020-02-25 02:00:00"
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}
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@@ -87,6 +103,20 @@
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'date' =>
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string(19) "2020-02-25 03:00:00"
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}
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[3] =>
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array(2) {
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'val' =>
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string(2) "a4"
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'date' =>
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string(19) "2020-02-25 04:00:00"
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}
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2
エラー修正
test
CHANGED
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@@ -9,6 +9,8 @@
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```PHP
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@@ -24,19 +26,13 @@
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$new = ['val'=>'a2','date'=>'2020-02-25 04:00:00'];
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$new = ['val'=>'a2','date'=>'2020-02-25 04:00:00'];
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foreach($arr as $key => $row ){
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if($row['val'] === $new['val']){
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foreach($new as $newRow){
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foreach($arr as $key => $row ){
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if($row['val'] === $newRow['val']){
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$arr[$key]['date'] = $new['date'];
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}
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}
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@@ -76,7 +72,7 @@
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'date' =>
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-
string(19) "2020-02-25 0
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string(19) "2020-02-25 04:00:00"
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}
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@@ -95,8 +91,6 @@
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}
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}
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*/
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1
補足
test
CHANGED
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@@ -4,7 +4,7 @@
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4
4
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冗長な感じはありますが、愚直にやるならこうかなあ。
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6
6
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7
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ポイントとしては`$arr`を直接いじりたいなら`$arr[$key][
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ポイントとしては`$arr`を直接いじりたいなら`$arr[$key]['date']`みたいにする必要がある点です。（これを`$row['date'] = $newRow['date']`としても`$arr`は書き換わりません。）
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