三元或类似的东西来选择功能？
我正在使用 Drupal 的 PHP 自动化测试。该类有两个我关心的方法：pass() 和 fail()。每个操作都会在结果页面上生成一行单独的行，指示特定操作是通过还是失败，例如，
if ( $value == "expected_value" ) {
$this->pass("Looking for expected value");
} else {
$this->fail("Looking for expected value");
}
我注意到上面的内容有点冗长。我想做一些类似三元赋值的事情，只是在我决定调用哪个函数的地方。比如：
$function = ($value == "expected_value") ? "pass" : "fail" ;
$this->$function("Looking for expected value.");
这是我表达这个逻辑的最简洁、最优雅的方式吗？我尝试过
$this->(($value == "expected_value") ? "pass" : "fail")("Looking for expected value.");
但出现解析错误。有没有办法将其简化为一行，例如三元赋值？
编辑 我认为的冗长不是 if-else 结构，而是我将同一消息重复两次。在我看来，应该有一种表达方式，我只声明一次消息。当然，我可以将它放在一个变量中，但这会占用额外的空间，而且我还传递了两次。
这是提出我的问题的另一种方式：有没有一种方法可以定义这个逻辑，同时只表达一次寻找期望值？
I'm working with Drupal's automated testing in PHP. It's a class that has two methods I'm concerned about: pass() and fail(). Each one produces a separate line on a results page indicating whether a particular operation passed or failed, e.g.
if ( $value == "expected_value" ) {
$this->pass("Looking for expected value");
} else {
$this->fail("Looking for expected value");
}
What I notice about the above is that it's a bit verbose. I'd like to do something like ternary assignment, only instead where I decide which function to call. Something like:
$function = ($value == "expected_value") ? "pass" : "fail" ;
$this->$function("Looking for expected value.");
Is this the most concise, elegant way I can phrase this logic? I tried
$this->(($value == "expected_value") ? "pass" : "fail")("Looking for expected value.");
But I got a parse error. Is there a way to get it down to one line, like ternary assignment?
Edit The verboseness that I percieve is not the if-else structure, but that I repeat the same message twice. It seems to me that there should be a way of expressing this where I only declare the message once. Of course I could put it in a variable, but that takes up extra space and I pass it twice, also.
Here's another way of framing my question: Is there a way I can define this logic while only expressing Looking for expected value one time?
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我会使用通常的 if-elseif 语句，因为它是最明显、可读的并且（也许只有我）它不是“冗长”，它只是一个 if-elseif >-声明。
然而
I would use the usual
if-elseif-statement, because its the most obvious, readable and (maybe its just me) its not "verbose", its just anif-elseif-statement.However
我认为你的原始代码是最好的可读性，但如果你想要更短的东西（虽然不一定优雅），你可以这样做：
I think that your original code is the best for readability, but if you want something shorter (though not necessarily elegant) you could do: