Untitled

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        h1 {
            color: red;
        }

        .odd {
            background-color: beige;
            width: 75px;
            height: 75px;
        }

        .even {
            background-color: brown;
            width: 75px;
            height: 75px;
        }
    </style>
</head>

<body>
    <?php

    $x_vak = 8;
    echo "<h1>hello</h1><br>";
    echo "<table>";
    $x = 1;
    $y = 1;
    for ($x > 0; $x < $x_vak; $x++) {

        if ($x & 1) {
            echo "<tr>";
            while ($y < $x_vak) {
                $y++;
                if ($y & 1) {
                    echo "<td class ='even'></td>";
                } else {
                    echo "<td class ='odd'></td>";
                }
            }
            $y = 1;
            echo "</tr>";
        } else {
            echo "<tr>";
            while ($y < $x_vak) {
                $y++;
                if ($y & 1) {
                    echo "<td class = 'odd'></td>";
                } else {
                    echo "<td class = 'even'></td>";
                }
            }
            $y = 1;
            echo "</tr>";
        }
    }

    echo "</table>";


    ?>

</body>

</html>