March 2017
Intermediate to advanced
364 pages
9h 45m
Japanese
Content preview from 初めてのPHP
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136
7
章 ユーザとの情報交換：
Web
フォームの作成
7.6
ひとつにまとめる
平凡な Web フォームを、データ検証、デフォルト値の出力、サブミットされた結果の処理を含
む機能満載のアプリケーションにするのは、とても大変な作業に思えるかもしれません。みなさん
の負担を軽くするために、この節では以下のすべてを行うプログラムの例全体を示します。
●
デフォルト値を含むフォームの表示
●
サブミットされたデータの検証
●
サブミットされたデータが適正ではない場合のエラーメッセージと保持したユーザ入力を
使ったフォームの再表示
●
サブミットされたデータが適正である場合のそのデータの処理
このすべてを行う例では、ヘルパー関数を含むクラスを活用してフォーム要素の表示と処理を簡
単にします。このクラスを例7-29 に示します。
例
7-29
フォーム要素表示のヘルパークラス
class FormHelper {
protected $values = array();
p
ublic function __construct($values = array()) {
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
$this->values = $_POST;
} else {
$this->values = $values;
}
}
public function input($type, $attributes = array(), $isMultiple = false) ...
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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.
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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.