Which PHP function is used to sanitize user input to prevent SQL injection attacks?

What function is used to check if a file upload operation was successful in PHP?

A). file_exists()

B). is_uploaded_file()

C). move_uploaded_file()

D). file_upload_successful()

Which PHP function is used to redirect the user to another page?

A). redirect()

B). header()

C). forward()

D). location()

What type of attribute is used in an HTML form to specify where to send the form data?

A). method

B). action

C). type

D). name

Which attribute of the HTML <form> element specifies the HTTP method to be used when submitting the form data?

A). method

B). action

C). type

D). enctype

What is the purpose of the htmlspecialchars() function in PHP?

A). To convert HTML entities to their corresponding characters.

B). To remove HTML tags from a string.

C). To encode special characters in HTML format.

D). To decode special characters in HTML format.

How can you check if a checkbox is checked in PHP when submitted via a form?

A). isset($_POST['checkbox'])

B). $_POST['checkbox'] == 'checked'

C). $_POST['checkbox'] === 'checked'

D). empty($_POST['checkbox'])

How can you access the value of a form field named 'username' submitted via the POST method in PHP?

A). $_GET['username']

B). $_POST['username']

C). $_REQUEST['username']

D). $_SERVER['username']

What type of attribute is used in an HTML form to specify where to send the form data?

A). method

B). action

C). type

D). name

What is the purpose of the isset() function in PHP when handling form submissions?

A). To check if a variable is empty

B). To check if a variable is set and is not NULL

C). To check if a variable is numeric

D). To convert a variable to a string

Which PHP superglobal array is used to retrieve form data sent with the POST method?

A). $_POST

B). $_GET

C). $_REQUEST

D). $_SERVER