问题描述
elseif和else if是完全同义的，还是有区别?
Are elseif and else if completely synonymous, or is there a difference?
Zend是否有接受使用的标准"?
Does Zend have an accepted "standard" on which one to use?
虽然我个人不喜欢在代码中看到elseif，但我只需要知道它们是否是同义词，并且PHP手册不是最容易搜索的.
While I personally dislike seeing elseif in the code, I just need to know if they're synonymous and the PHP manual isn't the easiest to search.
推荐答案
来自 PHP手册:
从本质上讲，它们的行为相同，但是else if在技术上等效于如下嵌套结构:
Essentially, they will behave the same, but else if is technically equivalent to a nested structure like so:
if (first_condition)
{
}
else
{
if (second_condition)
{
}
}
该手册还指出:
这意味着在正常控制结构形式(即使用花括号)中:
Which means that in the normal control structure form (ie. using braces):
if (first_condition)
{
}
elseif (second_condition)
{
}
可以使用elseif或else if.但是，如果使用备用语法，则必须使用elseif:
either elseif or else if can be used. However, if you use the alternate syntax, you must use elseif:
if (first_condition):
// ...
elseif (second_condition):
// ...
endif;
这篇关于是"elseif"和"else if"完全同义?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！