Toms problem

        if (isset($_POST['datum'])) {
            $new_date = date('Y-m-d', strtotime($_POST['datum']));
            echo $new_date;

        if ( $userr == 'CL-Horst') {
            $sql = "SELECT Personeelsnummer, Werkdatum, Kaart FROM beoordeling WHERE VestID = '1' AND Werkdatum = '$new_date'";
            $stmt = sqlsrv_query($conn,$sql);
        }
        if ( $userr == 'CL-Melderslo') {
            $sql = "SELECT Personeelsnummer, Werkdatum, Kaart FROM beoordeling WHERE VestID = '2' AND Werkdatum = '$new_date'";
            $stmt = sqlsrv_query($conn,$sql);
        }
        if ( $userr == 'CL-Merselo') {
            $sql = "SELECT Personeelsnummer, Werkdatum, Kaart FROM beoordeling WHERE VestID = '3' AND Werkdatum = '$new_date'";
            $stmt = sqlsrv_query($conn,$sql);
        }
        if ( $userr == 'CL-Overloon') {
            $sql = "SELECT Personeelsnummer, Werkdatum, Kaart FROM beoordeling WHERE VestID = '4' AND Werkdatum = '$new_date'";
            $stmt = sqlsrv_query($conn,$sql);
        }

        ?>
<div class="form-group pull-right">
    <input type="text" id="styleme" class="search form-control" placeholder="Search by name..">
</div>
<table id="example" class="display" cellspacing="0" width="100%">
<thead>
    <tr>
      <th>Rating</th>
          <th>KaartNr</th>
          <th>PersoneelID</th>
      <th>Naam</th>
      <th>Werkdatum</th>
    </tr>
  </thead>
 <form name="myForm" method="post">
<?php
while($row = sqlsrv_fetch_array($stmt)){   //Creates a loop to loop through results
echo "<tr>
<td><input type='range' name='data[]' value='0' id='myRange' class='slider' min='0' max='7' data-show-value='true'></td>
<td>" . $row['Kaart'] . "</td><td>" . $row['Personeelsnummer'] . "</td>
<td>" . 'Piet' . ' ' . 'Janssen' . "</td><td>" . $row['Werkdatum']->format('Y-m-d') . "</td>
</tr>";
}

echo "</table>"; //Close the table
?>
<input type="submit" name="send" value="send"/>
</form>
<?php
if (isset($_POST['send'])) {
    if (!empty($_POST['data'])) {
        foreach($_POST["data"] as $data)
        {
            echo $data;
            $sql = "insert into beoordeling(Beoordelingnumeriek) values ('$data')";
        }
    }
}
?>
<script>
$(document).ready(function(){
    $('.search').on('keyup',function(){
        var searchTerm = $(this).val().toLowerCase();
        $('#example tbody tr').each(function(){
            var lineStr = $(this).text().toLowerCase();
            if(lineStr.indexOf(searchTerm) === -1){
                $(this).hide();
            }else{
                $(this).show();
            }
        });
    });
});
</script>
<?php } ?>