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YII Interview Questions

An Overview of Yii

Yii is a component-based, high-performance PHP framework for developing great Web applications quickly. Yii enables maximum reusability in programming and significantly accelerates the process of web application development. Applications that are designed using Yii DAO can be rapidly moved to a different DBMS without modifying the data accessing code. Continue reading to learn about Yii interview questions. We have an impressive collection of Yii Interview Questions, and Answers that is a must read for all developers. It is a structural framework which is used to develop a dynamic web application.

Development History

Yii 1.0 was released in December 2008.

To know more about the Yii framework, we are mentioning some of the Yii interview questions and answers are useful for all types of readers.

Latest Version

The latest version 2.0.15 was released in March 2018.

Advantages of YII Framework

  • An open-source platform
  • Intuitive tools assist in generating code quickly through unique features and form inputs.
  • Supports ActiveRecord for NoSQL, and comes with query builder feature.
  • Packed with security features that prevent your website from attacks.

Here below, we are mentioning a set of crucial Yii framework interview questions best suited for experienced professionals as well as newbies to this niche. These Yii interview questions are specially curated highly experienced industry professionals to help candidates in their future job success.

Installation Steps

  • Follow the instructions at getcomposer.org for downloading Composer in one of the directories in your hard drive.
  • If you have Windows, you will need to run Composer-Setup.exe.
  • After installing the Composer, install Yii by running the following commands under the web-accessible folder:
    composer global require "fxp/composer-asset-plugin:1.0.0"
    composer create-project --prefer-dist yiisoft/yii2-app-basic basic
  • In the above two commands, the first command will install the composer asset plugin. This plugin will manage bower and npm package through Composer. This command has to be run just once. The second command will install Yii in the "basic" directory. You can decide to choose a different directory name.

You may be asked this information in your next Yii framework interview questions

YII Interview Questions and answers

Looking for a new job? Do not miss to read our YII Interview Questions and answers. Whether you are a fresher or an experienced, these questions and answers that can help you to crack your interview.

Yii is a component-based, high-performance PHP framework for developing extensive Web applications quickly. Yii enables maximum reusability in programming and significantly accelerates the process of web application development.

Symfony Laravel YII
Allow developers to create scalable and robust applications Full-stack PHP framework Fast and high-performance app development framework
APIs enable easy integration with third-party apps Supports Object Relationship Mapping Utilizes Composer dependency manager to handle installations and dependencies
Compatible with other front-end frameworks Robust and reliable for creating web apps. Fastest PHP framework

Reading our vast question bank will make it easy for you to crack the Yii basic interview questions.

Yii is not developed by a single individual. A strong team of core developers and an online community of professionals has been contributing to this framework's development.

In any Yii application, you need to open the main.php file in the protected/config/main.php folder. Now search for the "DB" parameter. In this parameter, you can add the database name, hostname, username, and password for your database server.

Table prefix is defined using Gii by setting to tbl_. Once you set it, UserController will get generated instead of TblUserController.

The Yii Framework includes a class naming convention in which the names of classes map to the directories where they are stored. For your information, “framework/” directory is the root level directory of Yii that stores all classes hierarchically. Also, in Yii, the class names may contain only alphanumeric characters. Though numbers are allowed but are discouraged. You can use Dot (.) just in place of path separators.

In Yii, a component is an independent code written for a particular task which can be used by summoning controllers. An example of elements is an email component.

The Yii Framework provides many classes that simplify common coding tasks like array manipulation, code generation, etc. These are called Helper classes. These can be found under yii\helpers. These classes are static, which means they merely contain static methods and should never be instantiated.

S.no render() renderPartial()
1. Used for presenting views that correspond to what users see a web page. Used for rendering a portion of a page
2. Places the render result into the layout. Does not place the results of rendering in the layout.
3. Performs output processing and outputs the result. Does not perform output processing

To get the IP address of a user within the Yii Framework, the following code can be used:
echo Yii::app()->request->userHostAddress;
You can call this code from anywhere within your Yii application.

This information was frequently asked during Yii interview questions for experienced professionals.

Gii is one of the most powerful web-based, code-generator modules in the Yii Framework. It helps the developers in creating fully-customized forms and models for databases.

You can get the current controller name by:
//Controller Name
echo Yii::$app->controller->id;

You can get current action name by:
echo Yii::$app->controller->action->id;

To install the Yii Framework, your server requires PHP 5.4 or higher version, mbstring extension, and PCRE-support

You can set the default controller file through (protected/config/main.php).
array(
    'name'=>'Yii Framework',
    'defaultController'=>'site',
)

Create Session

Yii::app()->session['name'] = "umesh singh";

Get value from session

$name = Yii::app()->session['name'];

Unset session like

unset(Yii::app()->session['name']);

Remove all session

Yii::app()->session->clear();

Remove session from server

Yii::app()->session->destroy();

Widgets are instances of CWidget or their child class. This component is primarily for presentational purposes and is embedded in the view script to help generate a complex UI.

namespace appassets;

use yiiwebAssetBundle;

class DemoAsset extends AssetBundle {

public $basePath = ‘@webroot’;

public $baseUrl = ‘@web’;

public $js = [‘js/demo.js’];

}

Create an .htaccess file and add this code.

RewriteEngine on

# If a directory or a file exists, use it directly

RewriteCond %{REQUEST_FILENAME} !-f

RewriteCond %{REQUEST_FILENAME} !-d

# Otherwise forward it to index.php

RewriteRule . index.php

2. Now Modify common/config/main-local.php

'urlManager' => [
   'class' => 'yii\web\UrlManager',
   'showScriptName' => false,   
   'enablePrettyUrl' => true,
   'rules' => array(
      '<controller:\w+>/<id:\d+>' => '<controller>/view',
      '<controller:\w+>/<action:\w+>/<id:\d+>' => '<controller>/<action>',
      '<controller:\w+>/<action:\w+>' => '<controller>/<action>',
   ),
],
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