shigemk2 https://blog.hatena.ne.jp/shigemk2/ by shigemk2 https://www.shigemk2.com/ PHP こういう型システムを無視したワンダーな挙動だったのを思い出した PHP 7.3.11 <?php echo '1' + 1 . "\n"; echo '1' + '1' . "\n"; echo '1' + 1.5 . "\n"; echo '1' + '1.5' . "\n"; https://www.php.net/manual/ja/language.types.string.php#language.types.string.conversion 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fwww.shigemk2.com%2Fentry%2F2019%2F12%2F02%2F192945" title="PHP 文字列演算 - 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 2019-12-02 19:29:45 rich https://www.shigemk2.com/entry/2019/12/02/192945 1.0 100%