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初めてのPHP
book

初めてのPHP

by David Sklar, 桑村 潤, 廣川 類, 木下 哲也
March 2017
Intermediate to advanced
364 pages
9h 45m
Japanese
O'Reilly Japan, Inc.
Content preview from 初めてのPHP
120
7
章 ユーザとの情報交換:
Web
フォームの作成
print "Hello, ". $_POST['my_name'];
}
//
フォームを表示する
function show_form() {
print<<<_HTML_
<form method="POST" action="$_SERVER[PHP_SELF]">
Your name: <input type="text" name="my_name">
<br/>
<input type="submit" value="Say Hello">
</form>
_HTML_;
}
//
フォームデータをチェックする
function validate_form() {
// my_name
が少なくとも
3
文字であるかを調べる
if (strlen($_POST['my_name']) < 3) {
return false;
} else {
r
eturn true;
}
}
例7-7
validate_form()
関数は、
$_POST['my_name']
3 文字未満の場合は
false
を返し、それ
以外では
true
を返します。ページの先頭では、フォームのサブミット時に
validate_form()
を呼
び出します。
true
を返すと、
process_form()
が呼び出されます。それ以外では
show_form()
を呼び
出します。つまり、
Bob
Bartholomew
などの少なくとも3 文字の名前でフォームをサブミットす
ると、前述の例と同じこ ...
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Publisher Resources

ISBN: 9784873117935Other