PHP：测试三个变量是否相等 [英] PHP: Testing whether three variables are equal

问题描述

我以前从未遇到过，但是您如何测试三个变量是否相同？以下内容显然行不通，但我想不出一种优雅（正确）的方式来编写以下内容：

I've never come across this before, but how would you test whether three variables are the same? The following, obviously doesn't work but I can't think of an elegant (and correct) way to write the following:

if（ $ select_above_average === $ select_average === $ select_below_average）{}

推荐答案

if ((a == b) && (b == c)) {
   ... they're all equal ...
}

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