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Welcome to CodeIgniter
CodeIgniter
4
The small framework with powerful features
CodeIgniter is a powerful PHP framework with a very small footprint,
built for developers who need a simple and elegant toolkit to create full-featured web applications.
Why CodeIgniter?
Framework with a small footprint
CodeIgniter 4 is a 1.1MB download, plus 1.6MB for the user guide (epub).
Exceptional performance
CodeIgniter consistently outperforms most of its competitors.
Simple solutions over complexity
CodeIgniter encourages MVC, but does not force it on you.
Strong Security
We take security seriously, with built-in protection against CSRF and XSS attacks.
Version 4 adds context-sensitive escaping and CSP
Clear documentation
The User Guide contains an introduction, tutorial, a number of "how to" guides, and then reference documentation for the components that make up the framework.
Nearly zero configuration
Almost everything is set in CodeIgniter. Just connect your database!
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