Answer 10 questions and see how you score!
1. Which function checks if a variable is empty?
2. Which magic method is invoked when calling an inaccessible method?
3. What is the output of: echo strlen("");
4. Which function removes a variable?
5. Which function outputs text in PHP?
6. Which function removes HTML tags from a string?
7. Which function retrieves all declared classes?
8. Which function returns the current working directory?
9. Which function determines if garbage collection is enabled?
10. What is the output of: echo 10 <=> 20;