It is possible to use HTML in my input type, so I need the code to make it impossible to destroy the information in my database.
Can you help me?
<code>
<td width="163"><input type="int" name="leerlingnummer2"></td>
</code>
...
<code>
if($_POST['leerlingnummer2'] ==""){
$veld = "leerlingnummer";
$doorgaan = false;
</code>