Skip to main content

PHP 7 Interview Questions and Answers

What Is PHP?
PHP stands for “Hypertext Pre-processors”. It is server side scripting language and used for developing web applications and It's allows us to dynamically create generated web pages.

PHP has many frameworks and CMS and used for creating websites.  The PHP is very easy to create sites using its CMS. 

The PHP is an Object Oriented Programming (OOPs) language.

What Is PHP 7?
PHP7 is a latest and major release in the PHP Programming language that has widened several programming avenues for PHP coders.

PHP 7 is used to developed and delivered for mobile to enterprises and the cloud. PHP 7 offers faster performance, reduced memory consumption, anonymous class options, etc.
PHP 7 has been through several months of beta testing and was finally released in its stable form in December 2015, just one month after the predicted release date.

What Are New Features in PHP 7?
What’s New in PHP 7?
The following Features are included in PHP7 -
1.      Scalar type hints
2.      The null coalesce operator
3.      The space ship operator
4.      Return type declarations
5.      Anonymous classes
6.      The Integer division function
7.      Uniform variable syntax
8.      The Closure::call() method
9.      Level support for the dirname() function
10. Generator delegation
11. Generator return expressions
12. Throwables
13. Other Syntax Changes

Who Spearheaded the Development of PHP 7?
The development of PHP 7 was spearheaded by Dmitry Stogov, Xinchen Hui, and Nikita Popov.

Is PHP 7 Backwards Compatible?
Yes!, PHP has some backwards compatibility. 

The PHP 6 will be skipped for good reasons. As is expected of a new major release, there will be some breaks in backwards compatibility.

Does PHP 7 Support MySql?
PHP 7 has removed support for the mysql extension and affects the following as :
1.      Any queries using a mysql_connect function will not function
2.      PHP 7 only allow connections to a MySQL database using mysqli or PDO_MySQL

What Are the Benefits of PHP7?
The following besnfits are :
1.      Double Speed
2.      Enables accurate type declarations
3.      64-bit windows support system
4.      Anonymous classes
5.      Supports error handling
6.      New spaceship and null coalescing operators

Explore in detail about PHP FAQ's

I hope you enjoyed. Thank you very much fo your time.
By Anil Singh | Rating of this article (*****)

Popular posts from this blog

Angular 2, 4, 5, 6, 7, 8 and 9 Interview Questions and Answers -Books

» Are you preparing for Angular Interview? Buy this book (Including Angular 8, 7, 6, 5,4, 2) Interview Q/A Interview Q/A Interview Q/A Interview Q/A Interview Q/A Interview Q/A Interview Q/A » A Complete Guide Book of Angular 9 This is a concise, complete overview of the key aspects of Angular 9. It is fully up to date with the latest release of Angular. This article provide all the important aspects required for angular developers looking for brief and useful content... Posted In Angular 9 » A Complete Guide Book of Angular 8 This is a concise, complete overview of the key aspects of Angular 9. It is fully up to date with the latest release of Angular. This article provide all the important aspects required for angular developers looking for brief and useful content... Posted In Angular 8 » A Complete Guide Book of Angular 7 This is a concise, complete overview of the key aspects of Angular 7. It is fully up to date with the latest release of Angular. This

39 Best Object Oriented JavaScript Interview Questions and Answers

Most Popular 37 Key Questions for JavaScript Interviews. What is Object in JavaScript? What is the Prototype object in JavaScript and how it is used? What is "this"? What is its value? Explain why "self" is needed instead of "this". What is a Closure and why are they so useful to us? Explain how to write class methods vs. instance methods. Can you explain the difference between == and ===? Can you explain the difference between call and apply? Explain why Asynchronous code is important in JavaScript? Can you please tell me a story about JavaScript performance problems? Tell me your JavaScript Naming Convention? How do you define a class and its constructor? What is Hoisted in JavaScript? What is function overloadin

25 Best Vue.js 2 Interview Questions and Answers

What Is Vue.js? The Vue.js is a progressive JavaScript framework and used to building the interactive user interfaces and also it’s focused on the view layer only (front end). The Vue.js is easy to integrate with other libraries and others existing projects. Vue.js is very popular for Single Page Applications developments. The Vue.js is lighter, smaller in size and so faster. It also supports the MVVM ( Model-View-ViewModel ) pattern. The Vue.js is supporting to multiple Components and libraries like - ü   Tables and data grids ü   Notifications ü   Loader ü   Calendar ü   Display time, date and age ü   Progress Bar ü   Tooltip ü   Overlay ü   Icons ü   Menu ü   Charts ü   Map ü   Pdf viewer ü   And so on The Vue.js was developed by “ Evan You ”, an Ex Google software engineer. The latest version is Vue.js 2. The Vue.js 2 is very similar to Angular because Evan You was inspired by Angular and the Vue.js 2 components looks like -

nullinjectorerror no provider for httpclient angular 17

In Angular 17 where the standalone true option is set by default, the app.config.ts file is generated in src/app/ and provideHttpClient(). We can be added to the list of providers in app.config.ts Step 1:   To provide HttpClient in a standalone app we could do this in the app.config.ts file, app.config.ts: import { ApplicationConfig } from '@angular/core'; import { provideRouter } from '@angular/router'; import { routes } from './app.routes'; import { provideClientHydration } from '@angular/platform-browser'; //This (provideHttpClient) will help us to resolve the issue  import {provideHttpClient} from '@angular/common/http'; export const appConfig: ApplicationConfig = {   providers: [ provideRouter(routes),  provideClientHydration(), provideHttpClient ()      ] }; The appConfig const is used in the main.ts file, see the code, main.ts : import { bootstrapApplication } from '@angular/platform-browser'; import { appConfig } from '

List of Countries, Nationalities and their Code In Excel File

Download JSON file for this List - Click on JSON file    Countries List, Nationalities and Code Excel ID Country Country Code Nationality Person 1 UNITED KINGDOM GB British a Briton 2 ARGENTINA AR Argentinian an Argentinian 3 AUSTRALIA AU Australian an Australian 4 BAHAMAS BS Bahamian a Bahamian 5 BELGIUM BE Belgian a Belgian 6 BRAZIL BR Brazilian a Brazilian 7 CANADA CA Canadian a Canadian 8 CHINA CN Chinese a Chinese 9 COLOMBIA CO Colombian a Colombian 10 CUBA CU Cuban a Cuban 11 DOMINICAN REPUBLIC DO Dominican a Dominican 12 ECUADOR EC Ecuadorean an Ecuadorean 13 EL SALVADOR