[&] What function does PHP provide to convert special characters into HTML entities?
- htmlspecialchars() -- Correct
- urlencode()
- base64_encode()
- htmlentities()

[&] Which symbol is used to begin an HTML entity?
- Semicolon (;)
- Ampersand (&) -- Correct
- Greater than (>)
- Less than (<)

[&] In the context of preventing cross-site scripting vulnerabilities, what should web developers do upon receiving user input?
- Encode the inputs as HTML entities -- Correct
- Never ask for user inputs to avoid risk
- Store user inputs in a separate database
- Only use inputs from trusted users

[&] How does a browser interpret a string with special symbols if it is not HTML encoded?
- As an error that needs correction
- As HTML code which can alter the document structure -- Correct
- As plain text with no formatting
- As comments meant for developers only

[&] What is the primary purpose of HTML encoding?
- To compress HTML files for faster transmission
- To enhance the performance of web browsers
- To convert special characters into HTML entities to avoid unintended code interpretation -- Correct
- To format text within HTML files more effectively