PHP认为null等于零 [英] PHP considers null is equal to zero

问题描述

在php中，($myvariable==0) 当$ myvariable为零时，表达式的值为true；否则为0.当$ myvariable为null时，此表达式的值也为true.如何排除第二种情况?我的意思是我希望表达式仅在$ myvariable为零时才为真.我当然可以写

In php, ($myvariable==0) When $myvariable is zero, the value of the expression is true; when $myvariable is null, the value of this expression is also true. How can I exclude the second case? I mean I want the expression to be true only when $myvariable is zero. Of course I can write

($myvariable!=null && $myvariable==0 )

但是还有其他优雅的方法吗?

but is there other elegant way to do this?

推荐答案

$myvariable === 0

详细了解比较运算符.

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