<form action="insert.php" method="post" />
    <table id="Wagen">
        <thead>
          <tr>
            <th>Typ</th>
            <th>Kennzeichen</th>
            <th>Bericht</th>
             <th>Fahrer</th>
           </tr>
        </thead>

        <tbody>

    <?php
       $url = ('./cars.xml');
       $xml = simplexml_load_file( urlencode($url), null, true);


        foreach ( $xml->car as $cars ) :?>
    <tr>
            <td><input type="hidden" name="name[]" value="<?php echo  $cars->typ; ?>"><?php echo $cars->typ; ?></td>
            <td><input type="hidden" name="kfz-nr[]" value="<?php echo $cars->plate; ?>"><?php echo $cars->plate; ?></td>
            <td><input type="hidden" name="bericht[]" value="<?php echo $cars->message; ?>"><?php echo $cars->message; ?></td>
            <td><input type="hidden" name="fahrer[]" value="<?php echo $cars->driver; ?>"><?php echo $cars->driver; ?></td>
    </tr>

<?php endforeach; ?>

       </tbody>
    </table>
    <input type="submit" name="senden" value="XML speichern" />
</form>

<?php

     error_reporting(E_ALL);
        $MYSQL_HOST = 'localhost';
        $MYSQL_USER = 'username';
        $MYSQL_PASS = 'password';
        $MYSQL_DATA = 'database';

        $connid = @mysql_connect($MYSQL_HOST, $MYSQL_USER, $MYSQL_PASS) OR die("Error: ".mysql_error());
        mysql_select_db($MYSQL_DATA) OR die("Error: ".mysql_error());

       if (isset($_POST['senden']))
    {
      $sql =
              "INSERT INTO myTable
              (fahrzeug,
               kennzeichen,
               bericht,
               fahrer
              )
              VALUES
              ('".mysql_real_escape_string(trim($_POST['name']))."',
               '".mysql_real_escape_string(trim($_POST['kfz-nr']))."',
               '".mysql_real_escape_string(trim($_POST['bericht']))."',
               '".mysql_real_escape_string(trim($_POST['fahrer']))."');
                mysql_query($sql) OR die("<pre>n".$sql."</pre>n".mysql_error());
                mysql_query("SET NAMES 'utf8'");
    }
?>

<td><input type="hidden" name="bericht[]" value="<?php echo str_replace(["n", "r", "rn", "nn", "x20-x7f", "", "t", "x0B"], '', $cars->message) ; ?>"><?php echo str_replace(["n", "r", "rn", "nn", "x20-x7f", "", "t", "x0B"], '', $cars->message); ?></td>