How many error levels are available in PHP? 

 Type Hinting was introduced in which version of PHP?
 

How many functions does PHP offer for searching strings using POSIX style regular expression? 

 Which one of the following is the default PHP session name? 

Which one of the following function is useful for producing a timestamp based on a given date and time? 

Which of the following statements invokes the exception class?

Which of the following statements invoke the exception class? 

 Which of the following DateTimeZone classes are static?
i) listAbbreviations()
ii) getName()
iii) getOffset()
iv) listIdentifiers()

POSIX stands for

What will be the output of the following PHP code?

<?php

echo str_pad("Salad", 5)." is good.";

?>