open_http_redirect_impossible_source.php

<?php

$target = "";

if (array_key_exists ("redirect", $_GET) && is_numeric($_GET['redirect'])) {
    switch (intval ($_GET['redirect'])) {
        case 1:
            $target = "info.php?id=1";
            break;
        case 2:
            $target = "info.php?id=2";
            break;
        case 99:
            $target = "https://digi.ninja";
            break;
    }
    if ($target != "") {
        header ("location: " . $target);
        exit;
    } else {
        ?>
        Unknown redirect target.
        <?php
        exit;
    }
}

?>
Missing redirect target.