<? ... ?> is deprecated and should be avoided in favor of <?php ... ?> for compatibility and consistency.
What is the purpose of the semicolon (;) in PHP?
A). To indicate the end of a statement
B). To concatenate strings
C). To multiply two numbers
D). To declare a variable
What is the purpose of the PHP phpinfo() function?
A). To display information about the PHP environment
B). To execute PHP code
C). To retrieve data from a database
D). To create a new PHP file
Which PHP function is used to output content as HTML entities, preventing cross-site scripting (XSS) attacks?
A). htmlspecialchars()
B). htmlentities()
C). escape()
D). sanitize()
Which of the following PHP directives is used to set the maximum execution time of a script?
A). max_execution_time
B). memory_limit
C). error_reporting
D). display_errors
Which of the following tags is used to indicate the beginning of PHP code?
A). <?php
B). <!DOCTYPE html>
C). <? ... ?>
D). </php>
What is the output of the following code? <?php $name = 'Alice'; echo 'Hello, $name!'; ?>
A). Hello, $name!
B). Hello, Alice!
C). Nothing (empty output)
D). Syntax error
Which PHP function is used to check if a file exists in PHP?
A). file_exists()
B). is_file()
C). exists()
D). check_file()
What does the $_POST superglobal array contain in PHP?
A). Data submitted via an HTML form using the POST method
B). Data submitted via an HTML form using the GET method
C). Data stored in cookies
D). Data stored in session variables
What does the following code output? <?php echo 5 + 3 * 2; ?>
A). 16
B). 11
C). 10
D). 6
Which function is used to retrieve the value of a query string parameter in PHP?
A). $_GET[]
B). $_POST[]
C). $_SESSION[]
D). $_COOKIE[]