Please refer to the upgrade instructions corresponding to your installation method.

The Form Helper file contains functions that assist in working with forms.

CodeIgniter provides a comprehensive form validation and data prepping class that helps minimize the amount of code you'll write. Before explaining CodeIgniter's approach to data validation, let's ...

Normally the second segment of the URL is reserved for the method name, but in the example above it instead has a product ID. To overcome this, CodeIgniter allows you ...

CodeIgniter gives you access to a Query Builder class. This pattern allows information to be retrieved, inserted, and updated in your database with minimal scripting. In some cases only one or two ...

The URI Class provides functions that help you retrieve information from your URI strings. If you use URI routing, you can also retrieve information about the re-routed segments. Note: This class is ...

CodeIgniter features wrappers around some of the most popular forms of fast and dynamic caching. All but file-based caching require specific server requirements, and a Fatal Exception will be thrown ...

It pre-processes global input data for security. It provides some helper functions for fetching input data and pre-processing it. Note: This class is initialized automatically by the system so there ...

CodeIgniter provides an object oriented solution for working with URI’s in your application. Using this makes it simple to ensure that the structure is always correct, no matter how complex the URI ...

CodeIgniter comes with a Cross Site Scripting prevention filter, which looks for commonly used techniques to trigger JavaScript or other types of code that attempt to hijack cookies or do other ...

CodeIgniter has a Benchmarking class that is always active, enabling the time difference between any two marked points to be calculated. Note This class is initialized automatically by the system so ...

The Session class permits you maintain a user's "state" and track their activity while they browse your site. The Session class stores session information for each user as serialized (and optionally ...