shigemk2 https://blog.hatena.ne.jp/shigemk2/ by shigemk2 https://www.shigemk2.com/ php 凡ミス とりあえずこんなかんじのものを作ればよいのではなイカ? <?php // ダメな例 echo date('Y-m-d') . "\n"; echo date('Y-m-d') - 1 . "\n"; // 2011が表示されてしまう // こんな感じ $today = date('Y-m-d'); $year = date('Y'); $month = date('m'); $day = date('d'); $yesterday = date('Y-m-d', mktime(0, 0, 0, $month, $day-1, $year)); echo $yesterday . "\n"; ?… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fwww.shigemk2.com%2Fentry%2F20120131%2F1327952106" title="昨日を出力する(例) - by shigemk2" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2012-01-31 04:35:06 rich https://www.shigemk2.com/entry/20120131/1327952106 1.0 100%