'false === $ var'和'$ var === false'有什么区别？ [英] What's the difference between 'false === $var' and '$var === false'?

问题描述

比另一个更可读吗？首先，我不喜欢 false === 方法，但是我越来越频繁地看到它，我正在热身。我确定他们返回相同的结果。

Is one more readable than the other? At first, I disliked the false === approach but as I see it more and more often, I'm warming up to it. I'm pretty sure they return identical results.

推荐答案

我非常喜欢

false === $var

也就是因为有时候你只是使用平等而不是寻找身份。

Namely because sometimes you are only using equality and not looking for identity.

在这种情况下，您写

false == $var

但有时候你不是在你的游戏的顶部，可能写

But sometimes you aren't at the top of your game, and might write

false = $var

<

which will give an immediate error, and let's you fix it right away.

但是，如果您键入

pre> $ var = false


在墙上一个小时，试图找出为什么你的脚本不能正常工作。

you end up beating your head against a wall for an hour trying to figure out why your script isn't working right.

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