Ragazzi vi chiedo umilmente aiuto,ho un importante lavoro per la scuola.Praticamente ho creato una pagina html che è la seguente:
http://michaelnetwork.altervista.org/resistenzedef.html
Devo elaborarla con un file php che mi permetta di leggere il valore della resistenza dopo che l'utente ha scelto i colori della resistenza.
Non ho idea di come farlo e vi scongiuro,aiutatemi:

Ecco il codice dell'html:


<html>

<meta>
<title>Resistenza</title>
</meta>

<body>
<body bgcolor="#33CCFF">

<font face="Verdana, Arial, Helvetica, sans-serif" color="#FFFFFF">

<div align="center">Calcola Il Valore Delle Resistenze
</div>

</font>

</font>

<div align="center">Ricorda che puoi sempre usare il tester(old school) </br></div>

<form name="resistenza" action="ris.php" method="post">

<div align="center"><table border="1">
<tr>
<th> Colore </th>
<th> 1 Fascia </th>
<th> 2 Fascia </th>
<th> 3 Fascia </th>
<th> 4 Fascia </th>

</tr>
<tr>
<td bgcolor="000000"> <font color="ffffff"> Nero </font> </td>
<td> <input type="radio" name="prima" value="0"> </td>
<td> <input type="radio" name="seconda" value="0"> </td>
<td> <input type="radio" name="terza" value="0"> </td>
<td> / </td>

</tr>
<tr>
<td bgcolor="994422"> Marrone </td>
<td> <input type="radio" name="prima" value="10"> </td>
<td> <input type="radio" name="seconda" value="1"> </td>
<td> <input type="radio" name="terza" value="1"> </td>
<td> / </td>

</tr>
<tr>
<td bgcolor="cc0000"> Rosso </td>
<td> <input type="radio" name="prima" value="20"> </td>
<td> <input type="radio" name="seconda" value="2"> </td>
<td> <input type="radio" name="terza" value="2"> </td>
<td> / </td>

</tr>
<tr>
<td bgcolor="ff6600"> Arancio </td>
<td> <input type="radio" name="prima" value="30"> </td>
<td> <input type="radio" name="seconda" value="3"> </td>
<td> <input type="radio" name="terza" value="3"> </td>
<td> / </td>

</tr>
<tr>
<td bgcolor="ffff00"> Giallo </td>
<td> <input type="radio" name="prima" value="40"> </td>
<td> <input type="radio" name="seconda" value="4"> </td>
<td> <input type="radio" name="terza" value="4"> </td>
<td> / </td>

</tr>
<tr>
<td bgcolor="008800"> Verde </td>
<td> <input type="radio" name="prima" value="50"> </td>
<td> <input type="radio" name="seconda" value="5"> </td>
<td> <input type="radio" name="terza" value="5"> </td>
<td> / </td>

</tr>
<tr>
<td bgcolor="000088"> <font color="ffffff"> Blu </font> </td>
<td> <input type="radio" name="prima" value="60"> </td>
<td> <input type="radio" name="seconda" value="6"> </td>
<td> <input type="radio" name="terza" value="6"> </td>
<td> / </td>

</tr>
<tr>
<td bgcolor="aa0099"> Viola </td>
<td> <input type="radio" name="prima" value="70"> </td>
<td> <input type="radio" name="seconda" value="7"> </td>
<td> / </td>
<td> / </td>

</tr>
<tr>
<td bgcolor="777777"> Grigio </td>
<td> <input type="radio" name="prima" value="80"> </td>
<td> <input type="radio" name="seconda" value="8"> </td>
<td> / </td>
<td> / </td>

</tr>
<tr>
<td> Bianco </td>
<td> <input type="radio" name="prima" value="90"> </td>
<td> <input type="radio" name="seconda" value="9"> </td>
<td> / </td>
<td> / </td>

</tr>
<tr>
<td bgcolor="aaaaaa"> Argento </td>
<td> / </td>
<td> / </td>
<td> <input type="radio" name="terza" value="1.02"> </td>
<td> <input type="radio" name="tolleranza" value="10"> </td>

</tr>
<tr>
<td bgcolor="cccc00"> Oro </td>
<td> / </td>
<td> / </td>
<td> <input type="radio" name="terza" value="1.25"> </td>
<td> <input type="radio" name="tolleranza" value="5"> </td>

</tr>
</table> </br>
</div>

<div align="center"><select name="tipo">
<option name="tipo" value="1"> &Omega; </option>
<option name="tipo" value="2"> K&Omega; </option>
<option name="tipo" value="3"> M&Omega; </option>
<option name="tipo" value="4"> G&Omega; </option>

</select>


</br></br> <input type="submit" value="Invio">

</form>
</div>

</body>
</html>