如何在作曲家PHP中解决模糊的类分辨率？

Question

I have got problem with ambigious class resolution during composer install. I know where this problem came from. It is because I put new verion of PHPExcell library in folder next to the old one:

I did this because I need some things from new version but i don't want to delete old because a lot of things are using it.

So my question is: Can i somehow add a kind of prefix before New_PHPExcel so I would be able to use both ? Thank You in advance! :)

Answer 1

You can't use 2 versions of the same library simultaneously in PHP.

Composer won't help you with that.

See https://github.com/composer/composer/issues/2167