Definition: CodeIgniter, a popular PHP framework for web applications, was created by Google to simplify the development of web-based applications. It's used in many languages including C++, Java, Python, Ruby, and more. The core concept behind CodeIgniter is that it separates frontend and backend logic into separate files. This makes it easy to use without having to worry about maintaining complex code or integrating with third-party libraries. The framework also supports unit testing, which makes coding easier. CodeIgniter comes with a robust set of tools for developing web applications, including a wide range of built-in functions, templates, and middleware that simplify the process of building custom web interfaces.
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