布尔值上的字符串比较 [英] String compare on a bool

问题描述

我很确定这是我的newb PHP知识中的一个简单的基本缺陷，但是当发生以下情况时，我感到惊讶:

I'm pretty sure this is a simple fundamental flaw in my newb PHP knowledge, but I was surprised when the following happened:

$result是TRUE ...为什么将其视为等于字符串"email"?我猜这是因为，从技术上讲，这是一个bool，它不是假的吗?因此，当将其与字符串(例如"email")进行比较时，它将返回true.

$result is TRUE... so why is it considered equal to the string "email"? I'm guessing this is because, technically, it's a bool and it isn't false? So when it's compared against a string (e.g. "email") it returns true.

我应该更改方法以将返回的结果作为包含"true"的string返回(代替成功时的return true;)，还是应该采用其他方法?

Should I change my method to return as the result as a string containing "true" (instead of return true; on success), or is there another way I should be doing this?

谢谢.

推荐答案

是的，true等于(==)等于非空字符串.但是不完全相同(===).

Yes, true is equal (==) to a non-empty string. Not identical (===) though.

我建议您仔细阅读类型比较表.

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