Overview of PHP and its features Mocktest

Question - 19

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Overview of PHP and its features
Mocktest

11.

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

Answer & Solution Discuss in Board

Answer & Solution

Answer: Option A

Solution:

The phpinfo() function outputs detailed information about the PHP environment, including configuration settings, server information, and installed modules.

12.

Which of the following is used to comment out a single line of PHP code?

A). // B). /* */ C).  D). <?php ?>

Answer & Solution Discuss in Board

Answer & Solution

Answer: Option A

Solution:

Double forward slashes (//) are used for single-line comments in PHP.

13.

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

Answer & Solution Discuss in Board

Answer & Solution

Answer: Option A

Solution:

The include statement is used to include and evaluate an external PHP file within the current script.

14.

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

Answer & Solution Discuss in Board

Answer & Solution

Answer: Option A

Solution:

PHP sessions allow data to be persistently stored across multiple page requests, making them suitable for maintaining user login state, shopping carts, and other user-specific data.

15.

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

Answer & Solution Discuss in Board

Answer & Solution

Answer: Option A

Solution:

The given PHP code will output the sum of $x and $y, which is 15.

16.

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";

Answer & Solution Discuss in Board

Answer & Solution

Answer: Option C

Solution:

The const keyword is used to define constants in PHP, as shown in the third option.

17.

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

Answer & Solution Discuss in Board

Answer & Solution

Answer: Option A

Solution:

The mysqli_query() function is used to execute a SQL query on a MySQL database in PHP.

18.

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

Answer & Solution Discuss in Board

Answer & Solution

Answer: Option A

Solution:

The max_execution_time directive is used to set the maximum execution time of a PHP script, preventing long-running scripts from consuming excessive server resources.

19.

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

Answer & Solution Discuss in Board

Answer & Solution

Answer: Option A

Solution:

The exit() function is used to terminate script execution in PHP, optionally with an exit status code.

Overview of PHP and its features Mocktest

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