$submitted_date = new DateTime($input['year'].'-'.
$input['month'].'-'.
$input['day']);
if (($range_start > $submitted_date) || ($range_end <
$submitted_date)) {
$errors[] = 'Please choose a date less than six months old.';
}
} else {
//
フォームパラメータのいずれかを省略した場合や、
// 2
月
31
日などをサブミットしたときに発生する
$errors[] = 'Please enter a valid date.';
}
7.4.4
メールアドレス
メールアドレスのチェックは、最も一般的なフォーム検証作業だと断言できるでしょう。しか
し、手順1つでメールアドレスが有効であることを確認する完璧な方法はありません。なぜなら、
「有効」には目的によってさまざまな意味があるか
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month, and much more.
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.
Head of Cybersecurity
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.
Field Engineer
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.
Data Platform Tech Lead
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.