<?php
	$x = 0;
	// the simplest of statements is the if statement
	if ($x == 7)
	{
		$y = 12;
		$z = 13;
	}
	else
	{
		$y = 18;
		$z = 17;
	}

	var_dump ($x);
	var_dump ($y);
	var_dump ($z);
?>