PHP Quiz (Set 4) - Upskilling Engineers

PHP (Set 4)

1 / 10

What is the purpose of the 'ob_start()' function in PHP?

To start a new session

To display output immediately

To buffer output and store it in an internal buffer

To send HTTP headers to the browser

2 / 10

What is the purpose of the 'header()' function with the 'Location' parameter?

To send an HTTP response header

To redirect the user to a different web page

To set the character encoding of the webpage

To include an external CSS file

3 / 10

What is the purpose of the 'move_uploaded_file()' function in PHP?

To move a file from one directory to another

To copy a file from one directory to another

To delete a file

To rename a file

4 / 10

What is the purpose of the 'filter_var()' function in PHP?

To encode data as JSON

To filter and sanitize data based on a specified filter

To create HTML forms

To validate XML data

5 / 10

What is the purpose of the 'str_replace()' function in PHP?

To split a string into an array of substrings based on a delimiter

To replace occurrences of a substring with another substring

To extract a portion of a string

To convert a string to uppercase

6 / 10

What is the purpose of the 'include_once()' function in PHP?

To include the contents of a PHP file once

To include the contents of a PHP file multiple times

To include an external JavaScript file

To include the contents of an HTML file

7 / 10

Which of the following PHP data types is not scalar?

integer

string

boolean

array

8 / 10

What does the 'json_encode()' function do in PHP?

Converts a JSON string to a PHP array

Converts a PHP array or object to a JSON string

Decodes a JSON string into a PHP object

Encodes a PHP object into a JSON string

9 / 10

What is the 'PDO' extension used for in PHP?

To manipulate XML data

To perform image processing

To work with databases using a consistent interface

To create user interfaces

10 / 10

What is the purpose of the 'array_reverse()' function in PHP?

To reverse the order of elements in an array

To sort an array in descending order

To shuffle the elements of an array

To extract a portion of an array

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