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

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

A). <?php

B). <script>

C). <?php?>

D). <?>

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

A). .

B). +

C). ,

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

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 is a correct way to define a constant in PHP?

A). define('MY_CONST', 'value');

B). $MY_CONST = 'value';

C). const MY_CONST = 'value';

D). MY_CONST = 'value';

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!'; ?>;

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

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 NOT a feature of PHP?

A). Strongly typed

B). Open source

C). Extensive database support

D). Platform-independent

What is the output of the following PHP code? <?php $x = 5; $y = 10; echo $x + $y; ?>

A). 15

B). 5 + 10

C). $x + $y

D). 510