March 2017
Intermediate to advanced
364 pages
9h 45m
Japanese
Content preview from 初めてのPHP
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144
7
章 ユーザとの情報交換：
Web
フォームの作成
</table>
</form>
complete-form.php のコードは、
show_form()
関数の一部であるかのように実行します。つまり、
$errors
や
$form
などの
show_form()
関数のローカル変数を complete-form.php で利用できます。
すべてのインクルードファイルと同様に、complete-form.php は PHP タグの外で開始するので、
普通の HTML を出力してからメソッドの呼び出しや PHP ロジックが必要なときに PHP モードに
入ることができます。ここでのコードでは、さまざまなメソッド呼び出しの結果を表示する簡潔な
方法として特殊なショートエコータグ（
<?=
）を使っています。
<?=
で PHP ブロックを開始するのは、
<?php echo
で PHP ブロックを開始するのと全く同じことです。さまざまな
FormHelper
メソッドが
表示すべき HTML を返すので、これはフォーム
の HTML を作成するための便利な方法です。
メインファイルに戻ると、
validate_form()
関数は、サブミットされたフォームデータが適切な
基準を満たしていない場合のエラーメッセージの配列を作成します。
size
、
sweet
、
main_dish
の
チェックはこれらのパラメータに何かがサブミットされたかどうかを調べるだけでなく、サブミッ
トされた値が特定のパラメータに有効な値かどうかも調べます。つまり、 ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.