Most Asked PHP Interview Questions with Answers
Are you looking for PHP Interview Questions? Are you preparing for PHP Interview Questions to crack interview for jobs? This is the right place you have come. Here, we will guide and help you to enhance your PHP web development skills, and to be prepared for the job.
There is a great demand for PHP in industry. Here, we are providing a good collection of most asked top PHP Interview Questions. Each question has a perfectly written answer. So, let’s start.
Que 1) What is PHP? / What is the full form of PHP?
The full form of PHP is Hypertext Preprocessor. It is a widely used open-source server-side scripting language used for web development. It is most suited for creating dynamic websites and mobile APIs.
PHP supports most of the databases such as MySQL, Oracle, Sybase, Solid, PostgreSQL, generic ODBC etc. PHP code is embedded within HTML.
Que 2) What is the most usage of PHP?
PHP is mainly used to create dynamic websites and manage dynamic content, session tracking, databases, and also to build an entire e-commerce site. By default, most of the web hosting servers support PHP and that’s the reason of its cost-effectiveness.
Que 3) What is PEAR in PHP? / What is the full form of PEAR in PHP?
In PHP, PEAR is a framework and repository for reusable PHP components. The full form of PEAR is “PHP Extension and Application Repository”. PEAR consists of all types of PHP code snippets and libraries. It also provides a command line interface to install “packages” automatically.
Most Asked PHP Interview Questions
Que 4) Who has invented PHP? / Who is called the father of PHP?
Rasmus Lerdorf is known as the father of PHP as he created the PHP codes first and developed this language for web development.
Que 5) What is the scope of PHP in modern software development world?
PHP is one of the most popular programming languages nowadays. It is always in demand and stands as one of the top languages because of its ability to have a large impact on the outcome with very little code. Nowadays, PHP is in a great demand and companies are investing a good amount of money in hiring proficient PHP developers for upcoming projects.
Que 6) What are the key differences between variables and constants in PHP?
Following is a list of some key differences between variables and constants in PHP:
| Variables in PHP | Constants in PHP |
| A variables’ value can be changed during the execution. | A constants’ value cannot be changed during script execution. |
| We can easily define a variable by simple assignment. | We cannot define a constant by simple assignments. They are defined using the define() function. |
| In variables, we compulsory require to use the $ sign at the start. | In constant, there is not a requirement of a dollar sign ($) before using a constant. |
| In variables, the default scope is the current access scope. | We can access constants throughout without any scoping rules. |
