Insert row into DB using radio button - php

Question

i need some help here.
I need to create this grid that allows the user to select a winner, and that winner will be stored into a table in my database.
Im geeting all done, until the point were i need to me this Radio Button working, it inserts an empty row.
This my form...
while($row = mysqli_fetch_array($result))
{
echo "<tr>";
echo "<td>" .$row['id']."</td>";
echo "<td>" . "<input type='radio' name='premio' value='".$row['id']."'>" ."</td>";
echo "<td >" .$row['nombre']. "</td>";
echo "<td name='correo'>" . $row['correo'] . "</td>";
echo "<td name='telefono'>" . $row['telefono'] . "</td>";
echo "<td>" . $row['ar1'] . "</td>";
echo "<td>" . $row['ar2'] . "</td>";
echo "<td>" . $row['br1'] . "</td>";
echo "<td>" . $row['br2'] . "</td>";
echo "<td>" . $row['cr1'] . "</td>";
echo "<td>" . $row['dr1'] . "</td>";
echo "<td>" . $row['dr2'] . "</td>";
echo "<td>" . $row['dr3'] . "</td>";
echo "<td>" . $row['er1'] . "</td>";
echo "<td>" . $row['er2'] . "</td>";
echo "</tr>";
}
echo "</table>";
echo "<input type='submit' value='enviar'/>";
mysqli_close($con);
?>
</form>
</div>
And the link if you want to check it out.
http://www.gifted.cl/clientes/servier/registro_evento_1.php
php
<?php
$con=mysqli_connect("localhost","user","pass","db");
// Check connection
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
$sql="INSERT INTO ganadoresevento (nombre,correo,telefono)
VALUES
('$_POST[nombre]','$_POST[correo]','$_POST[telefono]')";
if (!mysqli_query($con,$sql))
{
die('Error: ' . mysqli_error($con));
}
echo "Respuestas registradas";
mysqli_close($con);
?>
Thanks in advance

Answer 1

echo "<td>" . "<input type='radio' name='premio' value='".$row['id']."'>" ."</td>";
echo "<td>" . "<input type='radio' name='nombre' value='".$row['nombre']."'>" ."</td>";
echo "<td>" . "<input type='radio' name='correo' value='".$row['correo']."'>" ."</td>";
echo "<td>" . "<input type='radio' name='telefono' value='".$row['telefono']."'>" ."</td>";
Don't really know what inputs you want to use but this uses radio button. You could use <input type="text"> or <input type="hidden">
Have a look at prepared statement also http://www.php.net/manual/en/mysqli.prepare.php