Which function initializes the constants necessary for using the openlog(), clodelog(), and syslog() functions?

Which of the following statements causes PHP to disregard repeated error messages that occur within the same file and on the same line?

Say you want to report error concerned about fatal run-time, fatal compile-time error and core error which statement would you use?

Which version introduced the function error_get_last()?

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?