三元运算符和字符串串联怪癖? [英] Ternary operator and string concatenation quirk?

问题描述

我只是想知道为什么这段代码(至少对我来说)产生错误的结果.

Hi I just want to know why this code yields (at least for me) an incorrect result.

好吧，可能我在这里错了

Well, probably i'm in fault here

$description = 'Paper: ' . ($paperType == 'bond') ? 'Bond' : 'Other';

我猜想，如果paperType等于'Bond'，则说明为'Paper:Bond'，如果paperType不等于'Bond'，则说明为'Paper:Other'.

I was guessing that if paperType equals 'Bond' then description is 'Paper: Bond' and if paperType is not equals to 'Bond' then description is 'Paper: Other'.

但是当我运行这段代码时，结果描述是'Bond'或'Other'并留给我 想知道字符串'Paper:'到哪里了?

But when I run this code the results are description is either 'Bond' or 'Other' and left me wondering where the string 'Paper: ' went???

推荐答案

$description = 'Paper: ' . ($paperType == 'bond' ? 'Bond' : 'Other');

尝试添加括号，以便按正确的顺序将字符串连接到字符串.

Try adding parentheses so the string is concatenated to a string in the right order.

这篇关于三元运算符和字符串串联怪癖?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！