What is the output of the following PHP code?

What file extension is commonly used for PHP scripts?

A). .php

B). .html

C). .js

D). .css

What does PHP stand for?

A). Personal Home Page

B). Preprocessed Hypertext Processor

C). Public Hyperlink Protocol

D). Programming Hypertext Processor

What is the purpose of the PHP exit() function?

A). To terminate script execution

B). To display a message and exit

C). To redirect to another URL

D). To close a database connection

What is the purpose of the PHP echo statement?

A). To output data to the browser

B). To define a function

C). To include an external file

D). To declare a variable

Which of the following is NOT a valid PHP variable name?

A). $my_var

B). $myVar

C). $my-var

D). $myVar123

What is the purpose of the PHP include statement?

A). To include and evaluate an external PHP file

B). To create a loop in PHP

C). To define a function in PHP

D). To execute a SQL query

Which of the following is used to concatenate strings in PHP?

A). .

B). +

C). ,

D). -

What is the purpose of the PHP mysqli_query() function?

A). To execute a SQL query on a MySQL database

B). To validate user input

C). To include an external file

D). To declare a variable

Which of the following best describes PHP?

A). Server-side scripting language

B). Client-side programming language

C). Markup language

D). Database management system

What is the purpose of the PHP interpreter?

A). To parse and execute PHP code

B). To generate HTML markup

C). To validate user input

D). To store data in databases