action. The action attribute defines the URL where the form data will be submitted.
What function is used to validate email addresses in PHP?
A). validate_email()
B). filter_var()
C). check_email()
D). email_validate()
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
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'])
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 PHP function is used to redirect the user to another page?
A). redirect()
B). header()
C). forward()
D). location()
Which PHP superglobal array is used to retrieve form data sent with the POST method?
A). $_POST
B). $_GET
C). $_REQUEST
D). $_SERVER
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 trim() function in PHP?
A). To remove whitespace from the beginning and end of a string.
B). To truncate a string to a specified length.
C). To convert a string to lowercase.
D). To convert a string to uppercase.
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']
Which function is used to check if a variable is an array in PHP?
A). is_array()
B). check_array()
C). array_check()
D). isArray()