class User extends CActiveRecord { public function rules() { return array( array('email', 'unique'), ); } }
class Post extends CActiveRecord { public function rules() { return array( array('title, content', 'required'), ); } }This code adds a validation rule to the Post model that requires both the title and content attributes to be non-empty. The package library for php CActiveRecord rules is the Yii Framework. Yii Framework is a high-performance component-based PHP web application framework that provides robust and optimized tools for developing modern web applications. It includes a powerful ORM (Object-Relational Mapping) system called ActiveRecord, which provides an easy and flexible way to interact with databases.