Top PHP Interview Questions 2018

In this article, we provide PHP Interview Questions which you can use to crack any level of php interview. Feel free to ask any question in questionbank.

Question # 1) What is PHP?

Answer # PHP: Hypertext Preprocessor is a widely-used open source general-purpose scripting language that is especially suited for web development and can be embedded into HTML.

Question # 2) What is PHP and why it is used?

Answer # PHP is a general-purpose scripting language that is especially suited to server-side web development, in which case PHP generally runs on a web server. Any PHP code in a requested file is executed by the PHP runtime, usually to create dynamic web page content or dynamic images used on websites or elsewhere.

Question # 3) Why PHP was called as personal home page?

Answer # php is called hypertext pre-processor as its libraries are already compiled. When any person request for any php page in the address bar of the browser that request is first sent to the server then server interpret php files and return back the response in form of Html.

Question # 4) What is PHP compared to HTML?

Answer # HTML is a language used to describe to a browser how to display text and other objects in a browser window. It is not a programming language. HTML works on a client computer (the system on which the page is being viewed). PHP is a scripting language and can be used to create web pages written in HTML.

Question # 5) What is a PHP 5?

Answer # PHP 5 is a server scripting language and a powerful tool for making dynamic and interactive Web pages. PHP is a widely-used, free, and efficient alternative to competitors such as Microsoftâ€™s ASP.

PHP Interview Questions And Answers

Question # 9) What are the advantages of using PHP?

Answer # Advantages of PHP Programming. PHP (Hypertext Pre-Processor) is a server-side web programming language that is widely used for web development. However, there are many languages which are used for web development or web programming. â€¦ PHP can run on both UNIX and Windows servers.

Question # 10) What is the difference between Python and PHP?

Answer # PHP is a language thatâ€™s made for the web. You can make GTK and CLI applications with PHP, but itâ€™s mainly used for websites. Python is used for a lot of stuff like websites, webservers, game frameworks, desktop and CLI application, IDEs and a lot more. Thereâ€™s also a huge difference in the syntax.

Basic PHP Interview Questions

Question # 11) Why do we use PHP?

Answer # A good benefit of using PHP is that it can interact with many different database languages including MySQL. We work with MySQL at Bluelinemedia since this is also a free language so it makes sense to use PHP. Both PHP and MySQL are compatible with an Apache server which is also free to license.

PHP Interview Questions And Answers

Question # 12) What is a session in PHP?

Answer # PHP 5 Sessions â€“ A session is a way to store information (in variables) to be used across multiple pages. Unlike a cookie, the information is not stored on the user’s computer.

Question # 13) Why is Facebook still using PHP?

Answer # Facebook technology stack consists of an application written in many languages, including PHP and many others. Facebook still using PHP but it has built a compiler for it so it can be turned into native code on. Facebook doesnâ€™t use PHP for its core system, at Facebook, they use C++ heavily on back end system.

PHP Interview Questions And Answers For 1 Year Experience

Question # 14) How does PHP work?

Answer # The PHP software works with the web server, which is the software that delivers web pages to the world. You request a file, the web server happens to be running PHP, and it sends HTML back to the browser, thanks to the programming in PHP.

PHP Interview Questions And Answers

Question # 15) Can you use PHP and Javascript together?

Answer # So, when we develop web pages, we can have a combination of HTML, Javascript, CSS and PHP in our pages. If you need to use a scripting language, such as PHP, once the page has been loaded into the browser, then you must either refresh the page or use Ajax to request more processing at the server side.

Question # 16) Why do we use Javascript in PHP?

Answer # PHP is commonly written in-line in the same files as HTML and Javascript, PHP is a server-side language. Javascript is a client-side language. The main difference here is not PHP vs. JavaScript. Itâ€™s Client vs. Server. You canâ€™t do server stuff on the client, and you canâ€™t do all the Client stuff on the Server.

Question # 17) What is the main difference between asp net and PHP?

Answer # PHP is a programming language whereas ASP.NET is a programming framework. Websites developed by ASP.NET may use C#, but also other languages such as J#. ASP.NET is compiled whereas PHP is interpreted. ASP.NET is designed for windows machines, whereas PHP is platform free (and typically runs on Linux servers).

PHP Interview Questions And Answers

Question # 18) How does session work in PHP?

Answer # the session id is sent to the user when his session is created. it is stored in a cookie (called, by default, PHPSESSID ) that cookie is sent by the browser to the server with each request. the server (PHP) uses that cookie, containing the session_id, to know which file corresponds to that user.

Question # 19) How do you end a session in PHP?

Answer # If you want to explicitly end a userâ€™s and delete their data without them having to close their browser, you need to clear the $_SESSION array, then use the session_destroy() function. Session_destroy() removes all session data stored on your hard disk, leaving you with a clean slate.

Question # 20) What are the advantages of PHP mysql?

Answer # It is a stable, reliable and powerful solution with advanced features like the following:

Data Security
On-Demand Scalability
High Performance
Round-the-clock Uptime
Comprehensive Transactional Support
Complete Workflow Control
Reduced Total Cost of Ownership
The Flexibility of Open Source
Core PHP Interview Questions