You can also look up for these other topics:
Framework
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Boilerplate
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Tool
Security
Hacktoberfest
A small, simple PHP MVC framework skeleton that encapsulates a lot of features surrounded with powerful security layers.
A simple PHP MVC REST API framework with PHP 7.2 With routes and some tools to develop your API.
Laminas's event-driven MVC layer, including MVC Applications, Controllers, and Plugins