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function page3() {
		$sum = "";
		for($i=0; $i < $size; ++$i) {
			$set = isset($_POST['v'.$i.'']);
				if($set) {	
					$v = $_POST['v'.$i.''];
					$sum = $sum + $v;
				}
		}
		echo "<h1>And the answer is... $sum</h1>";
	}