What is the output of the following PHP code?

?<?php?phpecho"Happy";?>?>

In the compilation process, what is the sequence of the preprocessor stage?

Which function checks for the existence of DNS records?

  Which function is useful when you want to output the executed command result?

Which function retrieves MX records for the domain specified by hostname?

  You use the $_SERVER superglobal and your _______ property to create your path to check. 

Separating the user from the true inner workings of an application is known as _________

 Which method returns the error code generated from the execution of the last MySQL function? 

 a,b,c,d and ee are five consecutive integers in increasing order of size. Which one of the following expressions is not odd? 

What will be the output of the following PHP code?

$a = 5;
$b = 6;
if($a < ++$a || $b < ++$b)
print "hello";
else
print "hi";