Which values should be assigned to the variables $a, $b and $c in order for the following script to display the string Hello, World! <?php $string= "Hello, World!"; $a =?; $b =?; $c =?; if($a) { if($b &&!$c){ echo "Goodbye Cruel World!"; } else if(!$b &&!$c) { echo "Nothing here"; } } else { if(!$b) { if(!$a && (!$b && $c)) { echo"Hello, World!"; } else { echo"GoodbyeWorld!"; } } else { echo "Not quite."; } } ?>

How do you make PHP use a class file without having to require or include it manually?

Difference between $message and $$message?

What visibility level will this class property get in PHP5? var $cool = true;

.... operator is used to test if two values are identical in every way.

$text = 'He went to the school.'; echo strpbrk($text, 'w'); In the above code, what is the output?

Which is a type of array in PHP?

What kind of regular expression does PHP include?

What does the array_unshift () function do?

When comparing two arrays, what is the difference between == and === ?

What's the output?