在非类PHP文件中使用“使用”语句可以吗？

Question

the title says it all. Is it ok to do something like:

<?php

use Some\Very\Long\Namespace\SomeClassName;

SomeClassName::someMethod();

Or does this somehow negatively affect the class loader?

Answer 1

All use does is alias a long namespaced name to a different (shorter) local name. Your code is exactly equivalent to:

Some\Very\Long\Namespace\SomeClassName::someMethod();

So yes, it's perfectly fine.