CodeIgniter4 User Guide

• Welcome to CodeIgniter4
  • Welcome to CodeIgniter4
  • Server Requirements
  • Credits
  • PSR Compliance

Getting Started

• Installation
  • Composer Installation
  • Manual Installation
  • Running Your App
  • Upgrading From a Previous Version
  • Troubleshooting
  • CodeIgniter Repositories

Build Your First Application

• Build Your First Application
  • Static pages
  • News section
  • Create news items
  • Conclusion

Overview & General Topics

• CodeIgniter4 Overview
  • Application Structure
  • Models, Views, and Controllers
  • Autoloading Files
  • Services
  • Factories
  • Working With HTTP Requests
  • Security Guidelines

• General Topics
  • Configuration
  • CodeIgniter URLs
  • Helper Functions
  • Global Functions and Constants
  • Logging Information
  • Error Handling
  • Web Page Caching
  • AJAX Requests
  • Code Modules
  • Managing your Applications
  • Handling Multiple Environments

Request Handling

• Controllers and Routing
  • Controllers
  • URI Routing
  • Controller Filters
  • HTTP Messages
  • Request Class
  • IncomingRequest Class
  • Content Negotiation
  • HTTP Method Spoofing
  • RESTful Resource Handling

• Building Responses
  • Views
  • View Cells
  • View Renderer
  • View Layouts
  • View Parser
  • HTML Table Class
  • HTTP Responses
  • API Response Trait
  • Localization
  • Alternate PHP Syntax for View Files

Handling Databases

• Working With Databases
  • Quick Start: Usage Examples
  • Database Configuration
  • Connecting to a Database
  • Running Queries
  • Generating Query Results
  • Query Helper Functions
  • Query Builder Class
  • Transactions
  • Getting MetaData
  • Custom Function Calls
  • Database Events
  • Database Utilities

• Modeling Data
  • Using CodeIgniter's Model
  • Using Entity Classes

• Managing Databases
  • Database Manipulation with Database Forge
  • Database Migrations
  • Database Seeding

Libraries & Helpers

• Library Reference
  • Caching Driver
  • Cookies
  • CURLRequest Class
  • Email Class
  • Encryption Service
  • Working with Files
  • File Collections
  • Honeypot Class
  • Image Manipulation Class
  • Pagination
  • Publisher
  • Security
  • Session Library
  • Throttler
  • Times and Dates
  • Typography
  • Working with Uploaded Files
  • Working with URIs
  • User Agent Class
  • Validation

• Helpers
  • Array Helper
  • Cookie Helper
  • Date Helper
  • Filesystem Helper
  • Form Helper
  • HTML Helper
  • Inflector Helper
  • Number Helper
  • Security Helper
  • Test Helper
  • Text Helper
  • URL Helper
  • XML Helper

Advanced Topics

• Testing
  • Getting Started
  • Database
  • Generating Data
  • Controller Testing
  • HTTP Testing
  • Testing Responses
  • Benchmarking
  • Debugging Your Application
  • Mocking

• Command Line Usage
  • Running via the Command Line
  • Custom CLI Commands
  • CLI Generators
  • CLI Library
  • CLIRequest Class

• Extending CodeIgniter
  • Creating Core System Classes
  • Replacing Common Functions
  • Events
  • Extending the Controller
  • Authentication
  • Contributing to CodeIgniter