Yii 面试题与答案
问题 26. Explain Yii's DAO (Data Access Objects).
Yii's DAO provides a low-level database access layer for executing SQL queries and accessing database data without using ActiveRecord.
Example:
// $command = Yii::app()->db->createCommand($sql); $result = $command->queryAll();
问题 27. What is Yii's CActiveRecord find() method used for?
The find() method in CActiveRecord is used to retrieve a single record based on the specified conditions.
Example:
// $post = Post::model()->find('status=:status', array(':status'=>1));
问题 28. Explain Yii's dynamic form validation.
Dynamic form validation in Yii allows you to define validation rules in the model based on specific conditions, providing flexibility in validation logic.
Example:
// public function rules() { if ($this->scenario == 'scenario1') { return array('field1', 'required'); } }
问题 29. How to handle user sessions in Yii?
Yii handles user sessions by using the 'session' component. You can configure session parameters in the application configuration.
Example:
// 'components' => array('session' => array('timeout' => 1440))
问题 30. Explain Yii's migration command options.
Yii's migration command provides options like 'up', 'down', 'create', and 'history', allowing you to perform actions such as migrating up or down, creating a new migration, and viewing migration history.
Example:
// $ yii migrate/up
用户评价最有帮助的内容：