Notepad++

<?

if(!$_POST) {

?>

<table border="0" width="600" align="center">

<form action="<? $_POST ?>" method="post">

   <tr>

                <td colspan="2"><h1 align="center">examen</h1></td>

                                  </tr>

                                 <tr>

                                 <td align="right">nombre:</td>

                                 <td>

                                     <input type="text" required name=nombre" maxlength="100" size="40" />

                                                

                                 </td>

      </tr>

                  <tr>

                       <td align="right"> ¿cuanto es 3+2?</td>

                                  <td>

                                     <select name="p1">

                                                 <option value="1">6</option>

                                                 <option value="2">5</option>

                                                 <option value="3">8</option>

                                                 <option value="4">4</option>

                      </select>

                               </td>

                  </tr>

                  <tr>

                       <td colspan="2">

                                     <input type="submit" value="procesar"/>

                                                 <tr> 

</form> 

</table>

<?

}else{

$nombre = $_post ['nombre'];

$p1 = $_post ['p1'];

if($p1 == 2) {

    echo "respuesta correcta";

} else {

   echo "respuesta incorrecta";

}

}

?>