回答編集履歴
1
修正
answer
CHANGED
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@@ -8,24 +8,18 @@
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8
8
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function check_month($date)
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9
9
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{
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10
10
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$now = new DateTime();
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11
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+
$now_month = $now->format('Y') * 12 + $now->format('n');
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11
12
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$dt = new DateTime($date);
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12
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-
$
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13
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+
$dt_month = $dt->format('Y') * 12 + $dt->format('n');
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13
14
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14
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-
switch ($diff) {
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15
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-
case 0:
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16
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-
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15
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+
$diff = $dt_month - $now_month;
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17
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-
case 1;
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18
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-
return '来月';
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19
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-
case 2:
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20
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-
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16
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+
return (boolean) (0 <= $diff && $diff < 3);
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21
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-
default :
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22
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-
return null;
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23
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-
}
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24
17
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}
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25
18
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26
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-
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19
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+
var_dump(check_month('2017-02-18')); // false
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20
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+
var_dump(check_month('2017-03-18')); // true
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27
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-
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21
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+
var_dump(check_month('2017-04-18')); // true
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28
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-
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22
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+
var_dump(check_month('2017-05-18')); // true
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29
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-
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23
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+
var_dump(check_month('2017-06-18')); // false
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30
24
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31
25
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```
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