Writing and executing your first PHP script Mocktest

Question - 19

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Writing and executing your first PHP script
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11.

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

A). To display information about the PHP environment B). To execute PHP code C). To retrieve data from a database D). To create a new PHP file

Answer & Solution Discuss in Board

Answer & Solution

Answer: Option A

Solution:

phpinfo() is a function that outputs detailed information about the PHP environment, including configuration settings and extensions.

12.

Which of the following PHP directives 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:

max_execution_time directive is used to set the maximum execution time of a PHP script, preventing infinite loops and excessive processing.

13.

What is the output of the following code? <?php $a = 10; $b = 5; echo ($a > $b) ? "Yes" : "No"; ?>

A). Yes B). No C). 1 D). 0

Answer & Solution Discuss in Board

Answer & Solution

Answer: Option A

Solution:

This is an example of the ternary operator in PHP. Since $a is greater than $b, the expression evaluates to Yes.

14.

Which PHP function is used to check if a file exists in PHP?

A). file_exists() B). is_file() C). exists() D). check_file()

Answer & Solution Discuss in Board

Answer & Solution

Answer: Option A

Solution:

file_exists() is used to check if a file exists in a specified location.

15.

What does the $_POST superglobal array contain in PHP?

A). Data submitted via an HTML form using the POST method B). Data submitted via an HTML form using the GET method C). Data stored in cookies D). Data stored in session variables

Answer & Solution Discuss in Board

Answer & Solution

Answer: Option A

Solution:

$_POST contains data submitted via an HTML form using the POST method.

16.

Which of the following statements correctly assigns the value "John" to the variable $name in PHP?

A). $name = "John"; B). "John" = $name; C). $name -> "John"; D). $name <- "John";

Answer & Solution Discuss in Board

Answer & Solution

Answer: Option A

Solution:

The correct syntax to assign a value to a variable in PHP is $name = "John";.

17.

What is the output of the following code? <?php for ($i = 0; $i < 3; $i++) { echo $i . ", "; } ?>

A). 0, 1, 2, B). 1, 2, 3, C). 0, 1, 2 D). 1, 1, 1,

Answer & Solution Discuss in Board

Answer & Solution

Answer: Option A

Solution:

The for loop iterates three times, printing the value of $i each time, followed by a comma and space.

18.

Which PHP function is used to output content as HTML entities, preventing cross-site scripting (XSS) attacks?

A). htmlspecialchars() B). htmlentities() C). escape() D). sanitize()

Answer & Solution Discuss in Board

Answer & Solution

Answer: Option A

Solution:

htmlspecialchars() function converts special characters to HTML entities, preventing XSS attacks.

19.

Which of the following statements is true about PHP's include and require functions?

A). include will only produce a warning if the file cannot be found, while require will produce an error B). include will produce an error if the file cannot be found, while require will only produce a warning C). Both include and require will produce an error if the file cannot be found D). Both include and require will only produce a warning if the file cannot be found

Answer & Solution Discuss in Board

Answer & Solution

Answer: Option A

Solution:

include will only produce a warning if the file cannot be found, while require will produce an error.

Writing and executing your first PHP script Mocktest

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