<?php
	//  This is the comment sample from Paul Conrad's Independent Study
	//  This script will output to the browser 'Guess what?  y is less than 5!'

	/* Initialize some variables using C style comments
 	   $a - contains a-coefficient
           $b - contains b-coefficient
           $x - value we are evaluating
           $y - result from evaluating equation 
	*/
      	$a = 1; $b = 2; $x = 1;
	$y = $a * $x + $b;

	if ( $y < 5 )  // C++ style comment, check if y<5
	{
		# Shell style comment, display something when y<5
		echo "Guess what?  y is less than 5!";
	}
?>