Anders

<!doctype html>
<html>
<head>
    <meta charset="utf-8">
    <title>Anders</title>
</head>
<body>
<p>
<?php

foreach(range(0,9) as $number) {
    // skriver ut numret om det validerar, annars inget
    echo filter_var($number, FILTER_VALIDATE_INT) . "<br>";
}

?>
</p>
</body>
</html>