A3.php

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <?php
    for($i = 0; $i <= 40; $i+=2){
        $k = $i * $i;
        echo"<div>$i x $i = $k.</div>";
    }
    ?>
</body>
</html>

Resultaat

Made by Thijs Aarnoudse