March 2017
Intermediate to advanced
364 pages
9h 45m
Japanese
Content preview from 初めてのPHP
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111
7
章
ユーザとの情報交換：
Web
フォームの作成
フォームの処理は、ほとんどの Web アプリケーションの必要不可欠な構成要素です。フォーム
はユーザがサーバと通信するためのものです。新しいアカウントの登録、フォーラムでの特定の話
題に関するすべての投稿の検索、紛失したパスワードの再申請、近所のレストランや靴屋の検索、
本の購入などを行います。
PHP プログラムでフォームを使用するときには 2 段階の動作になります。第 1 段階ではフォーム
を表示します。この段階では、テキストボックス、チェックボックス、ボタンなどの適切なユーザ
インタフェース要素のタグを含む HTML を生成します。フォーム作成に必要な HTML についての
詳細は、Elisabeth Robson と Eric Freeman 共著の『Head First HTML and CSS』（O
’
Reilly、和
書未刊）の「HTMLフォーム」の章を読むとよいでしょう。
ユーザがフォームを含むページを訪れると、フォームにリクエストされた情報を入力してからボ
タンをクリックするか［Enter］キーを押してサーバにフォーム情報を送り返します。サブミットさ
れたフォーム情報の処理は、第 2 段階の操作となります。
例7-1 は、ユーザに「Hello」と表示するページです。フォームのサブミッションにレスポンスし
てページがロードされると、ページはあいさつ文を表示します。それ以外の場合は、ユーザが名前
を提供できるフォームを表示します。
例
7-1 ...
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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.