回答編集履歴
2
2
test
CHANGED
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@@ -9,3 +9,45 @@
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9
9
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echo date("W", strtotime("2000/04/10"));
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10
10
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11
11
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```
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12
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+
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13
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+
---追記---
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14
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+
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15
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そういうはなしなら
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16
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+
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17
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+
```php
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18
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+
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19
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+
<?php
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20
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+
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21
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+
function asita($str) {
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22
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+
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23
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$t = strtotime($str);
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24
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+
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25
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return mktime(0,0,0,date("m",$t),date("d",$t) + 1,date("Y",$t));
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26
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+
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27
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}
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28
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+
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29
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+
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30
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+
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31
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echo date("W", strtotime("2020/11/07")) . " 土\n";
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32
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33
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echo date("W", strtotime("2020/11/08")) . " 日\n";
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34
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35
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echo date("W", strtotime("2020/11/09")) . " 月\n";
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36
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+
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37
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echo date("W", strtotime("2020/11/10")) . " 火\n";
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38
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+
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39
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echo "\n";
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40
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41
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echo date("W", asita("2020/11/07")) . " 土\n";
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42
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+
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43
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echo date("W", asita("2020/11/08")) . " 日\n";
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44
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45
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echo date("W", asita("2020/11/09")) . " 月\n";
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46
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47
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echo date("W", asita("2020/11/10")) . " 火\n";
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48
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+
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49
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?>
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50
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+
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51
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+
```
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52
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+
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53
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+
ただし、大晦日には気を付けてください。
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1
1
test
CHANGED
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@@ -1 +1,11 @@
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1
1
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過去日付は(文字列でなく)タイムスタンプにして与えましょう。
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2
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+
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3
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+
---追記---
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4
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+
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5
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+
たとえばこんなかんじで
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6
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7
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```php
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8
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+
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9
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echo date("W", strtotime("2000/04/10"));
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10
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+
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11
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+
```
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