CodeIgniter4 User Guide¶

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

Getting Started¶

• Installation
  • Composer Installation
  • Manual Installation
  • Running Your App
  • Worker Mode
  • Troubleshooting
  • Deployment
  • Change Logs
  • Upgrading From a Previous Version
  • CodeIgniter Repositories

Guides¶

• Guides
  • Build Your First Application
    • Static Pages
    • News Section
    • Create News Items
    • Conclusion
  • Getting Started with REST APIs
    • Auto Routing & Your First Endpoint
    • Creating the Database and Model
    • Building a RESTful Controller
    • Conclusion

Overview & General Topics¶

• CodeIgniter4 Overview

  • Application Structure
  • Models, Views, and Controllers
  • Autoloading Files
  • Services
  • Factories
  • Working with HTTP Requests
  • Security Guidelines
  • Design and Architectural Goals

• 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

  • URI Routing
  • Controllers
  • Controller Filters
  • Controller Attributes
  • Auto Routing (Improved)
  • HTTP Messages
  • Request Class
  • IncomingRequest Class
  • Content Negotiation
  • HTTP Method Spoofing
  • RESTful Resource Handling

• Building Responses

  • Views
  • View Renderer
  • View Layouts
  • View Cells
  • View Parser
  • View Decorators
  • HTML Table Class
  • HTTP Responses
  • API Responses
  • API Resources
  • Content Security Policy
  • 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 Methods
  • 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 Forge
  • Database Migrations
  • Database Seeding
  • Database Commands

Libraries & Helpers¶

• Library Reference

  • Caching Driver
  • Cookies
  • Cross-Origin Resource Sharing (CORS)
  • 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
  • Testing CLI Commands
  • Mocking
  • Benchmarking
  • Debugging Your Application
  • Session Testing

• Command Line Usage

  • CLI Overview
  • Running Controllers via CLI
  • Spark Commands
  • Creating Spark Commands
  • CLI Generators
  • CLI Library
  • CLI Signals
  • CLIRequest Class

• Extending CodeIgniter

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

Official Packages¶

• Official Packages