Which of the following is a correct way to define a constant in PHP?

What is the output of the following PHP code? <?php echo 'Hello, World!'; ?>

A). Hello, World!

B). <?php echo 'Hello, World!'; ?>

C). <?php echo 'Hello, World!'; ?>;

D). <?php echo 'Hello, World!'; ?>;

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

Which of the following is true about PHP sessions?

A). Sessions allow data to be persistently stored across multiple page requests

B). Sessions are stored on the client side

C). Sessions are limited to storing only strings

D). Sessions are enabled by default in PHP

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

Which PHP directive is used to set the maximum execution time of a script?

A). max_execution_time

B). memory_limit

C). error_reporting

D). display_errors

Which of the following is a correct way to start a PHP script?

A). <?php

B). <script>

C). <?php?>

D). <?>

What does the phpinfo() function do in PHP?

A). Displays information about the PHP environment

B). Executes SQL queries

C). Validates user input

D). Encrypts data transmission

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

A). $my_var

B). $myVar

C). $my-var

D). $myVar123

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

A). .

B). +

C). ,

D). -

Which of the following best describes PHP?

A). Server-side scripting language

B). Client-side programming language

C). Markup language

D). Database management system