A. They are functions.
B. They are statements.
C. They’ll not work if the () is not present.
D. They can not be used to require files.
Which one of the following statements is true for include_once() and require_once()?
Which keyword can be used to fix the above error?
Which symbol is used to declare nested namespaces?
Which one of the following is the correct way of declaring a namespace?
Which of the following can you place inside a namespace?