March 2017
Intermediate to advanced
364 pages
9h 45m
Japanese
Content preview from 初めてのPHP
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10.3
情報の格納と取得
205
しょう。しかし、これらの値の変更方法を理解すると、どのようにすれば PHP のセッションの動
作をカスタマイズできるかをよく理解できます。
10.2
セッションの有効化
デフォルトでは、セッションは
PHPSESSID
というクッキーを使います。ページでセッションを
開始するときには、PHP エンジンはこのクッキーの存在を調べ、存在しなければ設定します。
PHPSESSID
クッキーの値は、任意の英数字文字列です。Web クライアントごとに異なるセッション
ID を持ちます。
PHPSESSID
クッキーに含まれるセッションID は、サーバから見てその Web クライ
アントを一意に識別します。そのため、エンジンは Web クライアントごとに別個のデータを管理
できます。
セッション開始時の Web クライアントとサーバ間の通信を図 10-2に示します。
/shopping-cart.php
をお願いします。
1.
クッキーの「
PHPSESSID
」を
d41d8c8427e
に設定してください。
2.
これがそのページです。
セッション
d41d8c8427e:
空
/buy.php?item_id=6432
をお願いします。
PHPSESSID=d41d8c8427e
これがそのページです。
セッション
d41d8c8427e:
item_list: 6432
Web
サーバ
Web
クライアント
Web
クライアント
Web
サーバ
最初のリクエスト
2
回目のリクエスト
図10-2 セッション開始時のクライアントとサーバ ...
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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.