Yii Interview Questions and Answers in 2025 (100+ Q&A)

Yii

Ques:- What are the core application components available on yii?

Asked In :-

Right Answer:
The core application components available in Yii are:

1. **Application** - The main application class.
2. **Request** - Handles HTTP requests.
3. **Response** - Manages HTTP responses.
4. **Session** - Manages user sessions.
5. **User** - Manages user authentication and authorization.
6. **ErrorHandler** - Handles errors and exceptions.
7. **Log** - Manages logging.
8. **Cache** - Provides caching functionality.
9. **View** - Manages the rendering of views.
10. **Controller** - Handles user requests and application logic.

Yii

Ques:- How to set default controller on yii project ?

Asked In :-

Right Answer:
To set the default controller in a Yii project, open the `config/web.php` file and modify the `defaultRoute` property in the `components` section like this:

```php
'components' => [
// other components
],
'defaultRoute' => 'your-controller-name',
```

Replace `'your-controller-name'` with the name of your desired default controller.

Yii

Ques:- If you have to validate a registrations module for a user, what all can be possible ways, which one is the best?

Asked In :-

Right Answer:
Possible ways to validate a registration module for a user include:

1. **Client-side validation**: Using JavaScript to check input fields before submission.
2. **Server-side validation**: Validating data on the server after submission.
3. **Form field validation**: Ensuring required fields are filled, and formats (like email) are correct.
4. **Password strength validation**: Checking for minimum length, special characters, etc.
5. **Unique constraints**: Ensuring the username or email is not already taken.
6. **Captcha**: Implementing a CAPTCHA to prevent automated submissions.

The best approach is to use a combination of server-side validation for security and client-side validation for user experience.

Yii

Ques:- What is the component, uses, how can we do and what is the better way?

Asked In :-

Right Answer:
In Yii, a component is a reusable object that provides specific functionality, such as handling requests, managing sessions, or connecting to databases. Components are used to encapsulate logic and promote code reuse. You can create a component by extending the `yiibaseComponent` class and defining its properties and methods. The better way to use components is to configure them in the application configuration file (e.g., `config/web.php`) and access them via the application instance, ensuring a clean and organized code structure.

Yii

Ques:- What is the component, helper and why are they used, is there other way we can do same thing, what is better?

Asked In :-

Right Answer:
In Yii, a component is a reusable piece of code that provides specific functionality, such as database access or user authentication. A helper is a utility class that offers static methods to assist with common tasks, like formatting or data manipulation. Both are used to promote code reuse and organization.

While you can achieve similar functionality using plain PHP functions or classes, using components and helpers in Yii is generally better because they integrate seamlessly with the framework's features, follow its conventions, and enhance maintainability and readability of the code.

Yii

Ques:- what is meant by yii framework?

Asked In :-

Right Answer:
Yii is a high-performance, component-based PHP framework for developing web applications quickly and efficiently. It follows the MVC (Model-View-Controller) architectural pattern and provides features like caching, authentication, and security to streamline the development process.

Yii

Ques:- What are the server requirements to install yii 2.0 framework?

Asked In :-

Right Answer:
The server requirements to install Yii 2.0 framework are:

1. PHP version 5.4.0 or higher.
2. A web server (like Apache or Nginx).
3. Composer for dependency management.
4. The following PHP extensions: OpenSSL, PDO, Mbstring, Tokenizer, XML, and Ctype.

Yii

Ques:- Why gii is used in yii 2.0?

Asked In :-

Right Answer:
Gii is used in Yii 2.0 as a code generation tool that helps developers quickly create models, controllers, forms, and other code components, streamlining the development process and reducing boilerplate code.

Yii

Ques:- What are formatter in yii 2.0?

Asked In :-

Right Answer:
In Yii 2.0, formatters are components that help format data for display. They are used to format various types of data, such as dates, numbers, and currencies, ensuring consistent presentation throughout the application. You can use built-in formatters or create custom ones by extending the `yiibaseFormatter` class.

Yii

Ques:- How to get the get home page url in yii?

Asked In :-

Right Answer:
You can get the home page URL in Yii using the following code:

```php
Yii::$app->homeUrl;
```

Yii

Ques:- How to set home page url in yii?

Asked In :-

Right Answer:
To set the home page URL in Yii, you can configure the `urlManager` component in the `config/web.php` file. Set the `defaultRoute` property to the desired controller and action. For example:

```php
'components' => [
'urlManager' => [
'enablePrettyUrl' => true,
'showScriptName' => false,
],
],
'defaultRoute' => 'site/index', // Set your desired controller/action here
```

This will make the home page URL point to the specified controller and action.

Yii

Ques:- What are the directory structure of yii 2.0 framework?

Asked In :-

Right Answer:
The directory structure of Yii 2.0 framework is as follows:

```
yii2-app-basic/
├── assets
├── commands
├── config
├── controllers
├── models
├── runtime
├── tests
├── views
├── web
└── vendor
```

For the advanced template, it includes:

```
yii2-app-advanced/
├── common
│ ├── config
│ ├── models
│ └── tests
├── frontend
│ ├── config
│ ├── controllers
│ ├── models
│ ├── views
│ └── web
└── backend
├── config
├── controllers
├── models
├── views
└── web
```

Yii

Ques:- How to access module component?

Asked In :-

Right Answer:
To access a module component in Yii, use the following syntax:

```php
Yii::$app->getModule('moduleName')->componentName;
```

Replace `'moduleName'` with the actual name of your module and `componentName` with the name of the component you want to access.

Yii

Ques:- What is gii in yii 2.0?

Asked In :-

Right Answer:
Gii is a powerful code generation tool in Yii 2.0 that helps developers quickly create models, controllers, forms, and other components through a web interface, streamlining the development process.

Yii

Ques:- Why yii framework is faster?

Asked In :-

Right Answer:
Yii framework is faster due to its use of lazy loading, efficient caching mechanisms, and a lightweight architecture that minimizes overhead. It also employs a powerful code generation tool (Gii) that speeds up development and reduces repetitive tasks.

Yii

Ques:- What does yii stand for?

Asked In :-

Right Answer:
Yii stands for "Yes, it is!"

Yii

Ques:- Why yii is the best framework?

Asked In :-

Right Answer:
Yii is considered one of the best frameworks because it offers high performance, is easy to use, has a powerful caching system, supports MVC architecture, provides built-in security features, and has a rich set of extensions and a strong community for support.

Yii

Ques:- What are the benefits of yii over other frameworks?

Asked In :-

Right Answer:
1. High performance due to lazy loading and efficient caching.
2. Easy to learn and use with a clear structure.
3. Built-in tools for security, such as input validation and SQL injection prevention.
4. MVC architecture promotes separation of concerns.
5. Extensive documentation and a strong community support.
6. Flexible and extensible with a modular approach.
7. Built-in support for RESTful APIs.
8. Active record implementation for database interactions.

Yii

Ques:- How do you continue when you have to use yii for any application?

Asked In :-

Right Answer:
To continue using Yii for any application, you should follow these steps:

1. **Install Yii Framework**: Use Composer to install Yii by running `composer create-project --prefer-dist yiisoft/yii2-app-basic your-project-name` for a basic app or `yiisoft/yii2-app-advanced` for an advanced app.

2. **Set Up Environment**: Configure your web server (like Apache or Nginx) to point to the `web` directory of your Yii application.

3. **Configure Database**: Update the `config/db.php` file with your database connection details.

4. **Create Models**: Use Gii, Yii's code generation tool, to create models, controllers, and views.

5. **Develop Application Logic**: Implement your business logic in controllers and models, and create views for the user interface.

6. **Test and Debug**: Use Yii's built-in debugging tools and logging to test and troubleshoot your application.

7. **Deploy

Yii

Ques:- What are the type of models available in yii framework ?

Asked In :-

Right Answer:
In Yii framework, there are three types of models:

1. **Active Record** - Represents a database table and provides methods for interacting with the database.
2. **Form Model** - Used for handling form data and validation, not directly tied to a database table.
3. **Data Model** - A general-purpose model that can be used for any data structure, not limited to database interactions.

The Yii Framework category on takluu.com is designed for web developers and programmers preparing for interviews focusing on the Yii PHP framework. Yii is a high-performance, component-based PHP framework known for its efficiency and security, widely used to build modern web applications.

This section covers essential topics such as Yii’s MVC architecture, routing, Active Record, Gii code generator, caching, authentication, and security features. You will also find questions on module development, RESTful API creation, error handling, and Yii extensions.

Interviewers often ask practical questions like:

“Explain the MVC pattern implementation in Yii.”
“How does Yii’s Active Record simplify database operations?”
“What are the security best practices in Yii framework?”

Our content breaks down complex Yii concepts with clear explanations, code snippets, and real-world examples, making it easier for both beginners and experienced developers to prepare effectively.

At Takluu, we regularly update the Yii Framework category with the latest updates, features, and best practices to ensure you stay competitive and well-prepared for technical interviews.

Questions in: Yii

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