php中的elseif和else if

以前的时候还没注意到，知道进入公司，看的代码多了点，时常看到elseif的分支，而我自己时常用的是else if，于是就注意到，他们既然都可以用，那么他们的却别在哪儿呢？ 通过查询，原来，确实有点小小区别：1.一个能用冒号，另外一个不可以 ? php /* Incorre

以前的时候还没注意到，知道进入公司，看的代码多了点，时常看到elseif的分支，而我自己时常用的是else if，于是就注意到，他们既然都可以用，那么他们的却别在哪儿呢？

通过查询，原来，确实有点小小区别：1.一个能用冒号，另外一个不可以

<span>php
</span><span>/*</span><span> Incorrect Method: </span><span>*/</span>
<span>if</span>(<span>$a</span> > <span>$b</span>):
    <span>echo</span> <span>$a</span>." is greater than ".<span>$b</span><span>;
</span><span>else</span> <span>if</span>(<span>$a</span> == <span>$b</span>): <span>//</span><span> Will not compile.</span>
    <span>echo</span> "The above line causes a parse error."<span>;
</span><span>endif</span><span>;
</span><span>/*</span><span> Correct Method: </span><span>*/</span>
<span>if</span>(<span>$a</span> > <span>$b</span>):
    <span>echo</span> <span>$a</span>." is greater than ".<span>$b</span><span>;
</span><span>elseif</span>(<span>$a</span> == <span>$b</span>): <span>//</span><span> Note the combination of the words.</span>
    <span>echo</span> <span>$a</span>." equals ".<span>$b</span><span>;
</span><span>else</span>:
    <span>echo</span> <span>$a</span>." is neither greater than or equal to ".<span>$b</span><span>;
</span><span>endif</span><span>;
</span>?>