Using Composer Packages 2.1.1

Composer is a tool for dependency management in PHP. It allows you to declare the libraries your project depends on and it will manage (install/update) them for you.

XenForo v2 uses Composer behind the scenes to include certain packages used by the core software. As addon developers, we can include Composer packages in our own addons which will be autoloaded alongside those provided by the core.

In XenForo 2.0, we had to use extension points to do our...

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