What is an Interface3:18 with Alena Holligan
An Interface is a contract that guarantee specific functionality is defined for an object. By using interfaces, one developer can write the implementation details, while another developer can be assured of how they will interact with that object. We'll look at what this means and how interfaces fit with class hierarchy.
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.
Learn more about the PHP Framework Interop Group (PHP FIG)
A group of established PHP projects whose goal is to talk about commonalities between our projects and find ways we can work better together.
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