CodeIgniter Basic Configuration Using Auto load

Key Architecture Takeaways

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  Point 1: Full-stack architecture blueprint: CodeIgniter Basic Configuration Using Auto load.
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  Point 2: Covers MVC separation of concerns, routing pipelines, and database abstraction.
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  Point 3: Modern ecosystems: Laravel 11/PHP 8.3, React 19, and Node.js LTS runtimes.

In continuation of our CodeIgniter tutorials, the next step we are setting up some basic configuration. We can manage our CodeIgniter configuration from application/config directory. The config directory contains the group of files which handle your application configuration.

Using Auto load:

The file atutoload.php comes under application/config directory. And used for Auto Loading Resources globally throughout your application. In order to keep the framework as light-weight as possible, only the absolute minimal resources are loaded by default. You should load only those things that use over and over in your application. The "Auto-load" feature in CodeIgniter permits following things of your application to autoload:

- Packages - Libraries - Drivers - Helper files - Custom config files - Language files - Models

Packages −

Using package we can load third party package from third party directory under application directory or a specific directory passing through an array().

$autoload['packages'] = array(APPPATH.'third_party', '/usr/local/shared');

Libraries −

It is a list of libraries that you can autoload passing through array list. For example following essential libraries like database, email, session, form_validation you can auto load.

$autoload['libraries'] = array('database', 'form_validation', 'session','grocery_CRUD','parser');

Drivers −

These classes are located in the system/libraries folder or in your application/libraries folder within their own subdirectory. They offer multiple interchangeable driver options.

$autoload['drivers'] = array('cache');

Helper files −

It is a list of helper files, to be autoloaded. Provide a list of libraries in the array, as shown below, to be autoloaded by CodeIgniter. In the given example, we are autoloading URL and file helpers.

$autoload['helper'] = array('form','url', 'security');

Config files −

It is used for custom config files. Otherwise, leave it blank. CodeIgniter automatically loads the primary config file (application/config/config.php), so you will only need to load a config file if you have created your own for the deferent environment. We will describe haw to configure multiple environments later on.

$autoload['config'] = array();

Language files −

If you find that you need a particular language globally throughout your application, you can tell CodeIgniter to auto-load it during system initialization. This is done by opening the application/config/autoload.php file and adding the language(s) to the autoload array.

$autoload['language'] = array('lang1', 'lang2');

Models −

Using models you can load frequently used model, For example, you have a user_model for frequent use than load model on auto-load.

$autoload['model'] = array('user_model');