我如何切换布尔数字？ [英] How can I toggle a boolean number?

问题描述

这是我的代码：

  $ num = 1; （$ num == 1）{
 $ num = 0 
} else {
 $ num = 1; //它总是0或1 
 
 
} 
  

正如您所看到的，我的代码切换了数字。我真的很难过。我猜php应该有这样做的功能。但是在搜索后我没有发现任何类似的东西。无论如何，我可以做更多的标准和更好的吗？

_{我正在编写一个伟大的公司。这就是为什么我要编写干净而专业的代码。 解决方案}

您的方法是正确的，并且可以正常工作。只需要将其包装到一个函数中即可。另一种方法是使用 ^（Bitwise XOR）
$ p $ 函数toggleNumber（$ num）{
返回$ num ^ = 1;
}






在线演示

---

该函数获取数字并与 1 就可以了。然后号码将被切换。

Here is my code:

$num = 1; // it always is either 0 or 1

if ( $num == 1 ){
    $num = 0
} else {
    $num = 1;
}

As you see, my code toggles the number. It is really ugly to me. I guessed php should has a function to do so. But I didn't find anything similar after some searches. Anyway, can I do that more standard and better?

_{Currectly I'm coding for a great company. That's why I want to write clean and professional codes.}

解决方案

Your approach is correct and will work as well. Just you need to wrap it into a function. Another way is using ^ (Bitwise XOR) to do that functional and more clean:

function toggleNumber( $num ) {
    return $num ^= 1;
}

Online Demo

---

That function gets the number and does XOR with 1 on it. Then the number will be toggled.

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