回答編集履歴
2
修正
answer
CHANGED
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@@ -7,7 +7,25 @@
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7
7
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$time2 = "";
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8
8
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?>
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9
9
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<input type="time" name="time" value="<?php echo ($time) ?? "" ?>">
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10
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-
<input type="time" name="
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10
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+
<input type="time" name="time2" value="<?php echo ($time2) ?? "" ?>">
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11
11
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```
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12
12
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13
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-
[Null 合体演算子](https://www.php.net/manual/ja/language.operators.comparison.php#language.operators.comparison.coalesce)
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13
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+
[Null 合体演算子](https://www.php.net/manual/ja/language.operators.comparison.php#language.operators.comparison.coalesce)
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14
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+
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15
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+
`1023`ならこんな感じで、「時間の型が正しいか」関数を作ってチェック。
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16
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+
```php
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17
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<?php
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18
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function timeFormat($t):string
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19
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{
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20
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if(date("Hi",strtotime($t)) === $t){
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21
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return date("H:i",strtotime($t));
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22
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}
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23
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return "";
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24
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}
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25
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+
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26
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+
$time = "1023";
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27
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+
$time2 = "";
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28
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?>
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29
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<input type="time" name="time" value="<?php echo timeFormat($time) ?>">
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30
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<input type="time" name="time2" value="<?php echo timeFormat($time2) ?>">
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31
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```
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1
修正
answer
CHANGED
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@@ -1,11 +1,13 @@
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1
1
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DBから取得した情報を$timeにおさめてるならisset($time)は常にtrueになりませんか。(空とnullは別物です)
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2
2
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3
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+
DBのデータの形式次第ですが、そもそも`10:23`のように入っているなら下記だけで良いと思います。
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3
4
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```php
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4
5
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<?php
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5
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-
$time =
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6
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+
$time = "10:23";
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6
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-
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7
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+
$time2 = "";
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7
8
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?>
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8
9
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<input type="time" name="time" value="<?php echo ($time) ?? "" ?>">
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10
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+
<input type="time" name="time" value="<?php echo ($time2) ?? "" ?>">
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9
11
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```
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10
12
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11
13
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[Null 合体演算子](https://www.php.net/manual/ja/language.operators.comparison.php#language.operators.comparison.coalesce)
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