Which character do the error_reporting directive use to represent the logical operator NOT?

Which version of PHP introduced E_STRICT Error level?

What is the description of Error level E_ERROR?

How many error levels are available in PHP?

Which one of the following filter checks if variable of specified type exists?

Which one of the following does not describe a validating filter?

How many types of filtering are present in PHP?

Which one of the following filter is used to filter several variables with the same or different filters?

Which of the following is/are an external data?

i) Cookies

ii) Input data from a form

iii) Server Variables

iv) Web services data

Which of the following is/are an exception?

i) OutOfBoundException

ii) OutOfRangeException

iii) OverflowException

iv) UnderflowException