Content negotiation is a way to determine what type of content to return to the client based on what the client can handle, and what the server can handle. This can be used to determine whether the ...

Please read the upgrade notes corresponding to the version you are upgrading from.

The Encryption Library provides two-way data encryption. To do so in a cryptographically secure way, it utilizes PHP extensions that are unfortunately not always available on all systems. You must ...

CodeIgniter4 now comes equipped with generators to ease the creation of stock controllers, models, entities, etc. You can also scaffold a complete set of files with just one command.

It pre-processes global input data for security. It provides some helper methods for fetching input data and pre-processing it.

The array helper provides several functions to simplify more complex usages of arrays. It is not intended to duplicate any of the existing functionality that PHP provides - unless it is to vastly ...