- Which of the following PHP superglobals contains information about files uploaded to the server?
- A) $_FILES
- B) $_POST
- C) $_GET
- D) $_SESSION
Answer: A) $_FILES
- What is the purpose of the
htmlspecialchars()function in PHP?
- A) Converts special characters to HTML entities
- B) Escapes special characters in a string to prevent XSS attacks
- C) Removes HTML tags from a string
- D) Converts HTML entities to special characters
Answer: B) Escapes special characters in a string to prevent XSS attacks
- Which of the following is not a valid method of including PHP code within HTML?
- A) <?php ... ?>
- B) <? ... ?>
- C) <?php ... ?>
- D) <?= ... ?>
Answer: B) <? ... ?>
- What is the purpose of the
unset()function in PHP?
- A) Deletes a file from the server
- B) Removes a session variable
- C) Destroys the current session
- D) Removes a variable or array element
Answer: D) Removes a variable or array element
- Which PHP function is used to format a timestamp into a more readable date and time?
- A) date()
- B) time()
- C) mktime()
- D) strtotime()
Answer: A) date()
- What does the
array_keys()function in PHP do?
- A) Returns all the values of an array
- B) Returns all the keys of an array
- C) Returns the number of elements in an array
- D) Reverses the order of elements in an array
Answer: B) Returns all the keys of an array
- What is the output of the following code snippet?
echo strlen("Hello World!");
- A) 11
- B) 12
- C) 10
- D) 13
Answer: C) 11
- Which of the following is used to declare a constant in PHP within a class?
- A) const
- B) define()
- C) constant()
- D) var()
Answer: A) const
- What is the correct way to check if a function exists in PHP?
- A) function_exists()
- B) exists_function()
- C) check_function()
- D) is_function()
Answer: A) function_exists()
- What does the
array_pop()function in PHP do?
- A) Adds an element to the end of an array
- B) Removes the first element from an array
- C) Removes the last element from an array
- D) Returns the last element of an array
Answer: C) Removes the last element from an array
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