However, in the global scope (no namespace) it would fail. This is a bug that is easily fixed. use should allow re-aliasing of global classes, and I could provide a very easy fix.
This is not a bug - since there you work with test::xmlreader, which of course you can define. But in global space you'd work with existing name xmlreader, which would be redefined. And PHP never allowed redefining classes.
file1.php: <?php class DB {} ?> file2.php: <?php import DB as Other_DB; include 'file1.php'; class DB extends Other_DB {} ?>
You mean 'use' should kill the old name? I don't think it's a good idea - we'd have to keep track of killed names, and since class can be named in a lot of ways - i.e. if you have name A::B::C::D you can alias any part of name, it would become messy.
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