CodeIgniter Validation

CodeIgniter Validation is a built-in library in the CodeIgniter PHP framework that provides a robust and flexible system for validating form and input data. It offers methods to define validation rules, run checks, and retrieve error messages, ensuring data integrity and security in web applications. The library supports various rule types, including required fields, data types, lengths, and custom callbacks.

Also known as: CI Validation, CodeIgniter Form Validation, CodeIgniter Input Validation, CI Form Validation, CodeIgniter Validator

Why learn CodeIgniter Validation?

Developers should use CodeIgniter Validation when building web applications with the CodeIgniter framework to enforce data quality and prevent security vulnerabilities like SQL injection or XSS attacks. It is essential for handling user inputs in forms, APIs, or any data submission scenarios, as it simplifies error handling and improves code maintainability by centralizing validation logic.

Learning Resources

• docs: CodeIgniter 4 User Guide - Validation
• tutorial: CodeIgniter 3 Form Validation Tutorial
• video: PHP Form Validation with CodeIgniter - YouTube Tutorial
• tutorial: CodeIgniter 4 Tutorial - Form Validation