Help us understand the problem. What is going on with this article?

PHPではif ($flag == true)というコードを書いてはいけない

More than 1 year has passed since last update.

はじめに

便乗ネタ記事です。
(きっと似たような記事がいっぱいあるんだろうな...

何がダメか

php > $flag = 1;
php > var_dump($flag == true);
php shell code:1:
bool(true)

ってなってしまうから。
なので、

php > $flag = 1;
php > var_dump($flag === true);
php shell code:1:
bool(false)

って感じで === で比較しようぜって話でした。
PHPってほんとクソ言語ですね!(褒め言葉

Why not register and get more from Qiita?
  1. We will deliver articles that match you
    By following users and tags, you can catch up information on technical fields that you are interested in as a whole
  2. you can read useful information later efficiently
    By "stocking" the articles you like, you can search right away
Comments
No comments
Sign up for free and join this conversation.
If you already have a Qiita account
Why do not you register as a user and use Qiita more conveniently?
You need to log in to use this function. Qiita can be used more conveniently after logging in.
You seem to be reading articles frequently this month. Qiita can be used more conveniently after logging in.
  1. We will deliver articles that match you
    By following users and tags, you can catch up information on technical fields that you are interested in as a whole
  2. you can read useful information later efficiently
    By "stocking" the articles you like, you can search right away
ユーザーは見つかりませんでした