<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>A</title>
</head>
<body>
<?php
for($a=0;$a>=20;$a++){
$b = $a * $a;
echo"<div> $a * $a = $b</div>";
};
?>
</body>
</html>
Made by Thijs Aarnoudse