回答編集履歴
1
追記
test
CHANGED
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@@ -7,3 +7,185 @@
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date('m/d', strtotime('last day of July 2008'));
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```
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#サンプル
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```php
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<?php
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ini_set('display_errors', true);
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error_reporting(E_ALL);
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function weekday(DateTime $dt)
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{
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$weeks = ['日', '月', '火', '水', '木', '金', '土'];
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return $weeks[$dt->format('w')];
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}
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$dt = new DateTime('first day of this month');
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if (filter_input(INPUT_POST, 'y') && filter_input(INPUT_POST, 'm')) {
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$year = filter_input(INPUT_POST, 'y');
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$month = filter_input(INPUT_POST, 'm');
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$dt = new DateTime(sprintf('%d-%d-01', $year, $month));
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}
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$month = $dt->format('m');
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?>
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="UTF-8">
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<title></title>
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<style type="text/css">
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body > div {
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margin: 1em 0;
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}
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table {
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border-collapse: collapse;
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}
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table th, table td {
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border: 1px solid #CCC;
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}
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</style>
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</head>
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<body>
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<div>
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<form action="" method="post">
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<select name="y">
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<?php foreach (range(2016, 2017) as $y): ?>
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<?php if ((new DateTime())->format('Y') == $y) : ?>
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<option value="<?= $y; ?>" selected="selected"><?= $y; ?></option>
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<?php else : ?>
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<option value="<?= $y; ?>"><?= $y; ?></option>
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<?php endif; ?>
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<?php endforeach; ?>
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</select>
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<select name="m">
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<?php foreach (range(1, 12) as $m): ?>
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<?php if ((new DateTime())->format('m') == $m) : ?>
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<option value="<?= $m; ?>" selected="selected"><?= $m; ?></option>
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<?php else : ?>
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<option value="<?= $m; ?>"><?= $m; ?></option>
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<?php endif; ?>
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<?php endforeach; ?>
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</select>
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<button>変更</button>
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</form>
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</div>
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<div>
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<table>
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<thead>
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<tr>
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<th>年</th>
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<th>月</th>
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<th>日</th>
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<th>曜日</th>
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</tr>
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</thead>
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<tbody>
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<?php while ($month == $dt->format('m')): ?>
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<tr>
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<td><?= $dt->format('Y'); ?></td>
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<td><?= $dt->format('m'); ?></td>
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<td><?= $dt->format('d'); ?></td>
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<td><?= weekday($dt); ?></td>
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</tr>
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<?php $dt->add(new DateInterval('P1D')) ?>
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<?php endwhile; ?>
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</tbody>
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</table>
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</div>
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</body>
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</html>
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```
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