Which of the following is/are an exception?
i) OutOfBoundException
ii) OutOfRangeException
iii) OverflowException
iv) UnderflowException
i), ii), iii) and iv)
Correct:
i), ii), iii) and iv)
Answer: d Explanation: The exception is thrown if a value is not a valid key. This represents errors that cannot be detected at compile time. OutOfBoundException, OutOfRangeException, OverflowException, UnderflowException are valid exceptions in PHP.