#25 Helpers in CodeIgniter 4 | Extending Helpers | Custom Helpers
What is a Helper?
A Helper is a group of functions under a specific category.
Helper as the name suggests, help you with tasks while developing web applications
There are some predefined helpers:
URL Helper: that assist in creating links
Form Helper: that help you create form elements
Cookie Helper: set and read cookies
File Helper: help you deal with files
and more….
All the Helpers are available from the following locations app/Helpers and system/Helpers.
Extending Helpers: it is also possible to extend the predefined helpers
Create a file in your app/Helpers/ folder with an identical name to the existing Helper.
For example, to extend the native Array Helper you’ll create a file named app/Helpers/array_helper.php,