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 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 function is used to sanitize user input to prevent SQL injection attacks?
A). strip_tags()
B). htmlspecialchars()
C). mysql_real_escape_string()
D). trim()
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.
Which PHP superglobal array is used to retrieve form data sent with the POST method?
A). $_POST
B). $_GET
C). $_REQUEST
D). $_SERVER
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']
How can you prevent SQL injection attacks in PHP?
A). Use prepared statements with parameterized queries.
B). Escape user input using the htmlspecialchars() function.
C). Sanitize user input using the filter_var() function.
D). Validate user input using regular expressions.
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()
Which PHP function is used to redirect the user to another page?
A). redirect()
B). header()
C). forward()
D). location()