Question

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

(a) define_variable()

(b) define_log_variable()

(c) log_variable()

(d) define_syslog_variable()

The question was posed to me in an interview for internship.

My doubt stems from Error Handling topic in section Error Handling and Exception Handling in PHP of PHP

Answer 1

Correct option is (d) define_syslog_variable()

Easy explanation: If you’re running PHP version 5.2.X or older, you need to execute this function before using any of the following logging functions.