Quiz: PHP Fundamentals

Question 1: What is PHP primarily used for in web development?

A. Styling websites B. Managing database servers C. Optimizing front-end frameworks D. Handling server-side logic

Question 2: Which function displays information about your PHP installation?

A. phpVersion() B. phpinfo() C. phpConfig() D. phpSetup()

Question 3: How do you declare a variable in PHP?

A. $variableName = "value"; B. var variableName = "value"; C. let $variableName = "value"; D. variable variableName = "value";

Question 4: Which PHP data type is used to store multiple values in a single variable?

A. Integer B. Float C. Array D. String

Question 5: What is the purpose of the $_POST superglobal in PHP?

A. To store session variables B. To retrieve form data submitted via the POST method C. To validate data D. To fetch cookies from the browser

Question 6: Which loop would you use to iterate over an array in PHP?

A. if B. while C. switch D. foreach

Question 7: What is the purpose of the session_start() function in PHP?

A. To create a cookie B. To initialize session management C. To destroy a session D. To log errors

Question 8: Which function is used to sanitize input by converting special characters to HTML entities?

A. htmlspecialchars() B. sanitize_input() C. escape_chars() D. strip_tags()

Question 9: What does the setcookie() function do in PHP?

A. Validates user input B. Creates a cookie C. Starts a session D. Deletes a cookie

Question 10: How can you check for errors in your PHP code?

A. By disabling error reporting B. By enabling strip_tags() C. By using error_log() D. By using the checkErrors() function

Question 11: Which PHP function validates and filters input data?

A. input_validate() B. sanitize_input() C. filter_var() D. check_data()

Question 12: Which PHP function prevents SQL injection attacks?

A. htmlspecialchars() B. filter_input() C. escape_sql() D. mysqli_real_escape_string()()