<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>6.3</title>
</head>
<body>
<?php
for($x=20; $x>=0; $x=$x-2){
echo " het kwadraat van $x is gelijk aan " . ($x * $x);
}
?>
</body>
</html>
Made by Thijs Aarnoudse