在 PHP 中,($myvariable==0)
当 $myvariable 为零时,表达式的值为真;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来做到这一点吗?
But is there other elegant way to do this?
$myvariable === 0
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