Posto tutto (o quasi):
<?php
echo "<form action=\"registra.php\" method=\"post\">";
echo "<TABLE cellSpacing=\"0\" cellPadding=\"0\" border=\"0\" width=\"520\">";
echo "<TR class=\"toplink\">";
echo "<TD vAlign=\"top\" align=\"left\" class=\"toplink\">Dati registrazione nuovo cliente</TD>";
echo "<tr>";
echo "<td align=left height=\"20\">User:</td>";
echo "<td align=left><input type=\"text\" name=\"user\"></td>";
echo "</tr>";
echo "<tr>";
echo "<td align=\"left\" height=\"20\">Password:</td>";
echo "<td align=\"left\"><input type\"password\" name=\"password\"></td>";
echo "</tr>";
echo "<tr>";
echo "<td align=\"left\" height=\"20\">Nome:</td>";
echo "<td align=\"left\"><input type=\"text\" name=\"nome\"></td>";
echo "</tr>";
echo "<tr>";
echo "<td align=left height=\"20\">Cognome:</td>";
echo "<td align=left><input type=\"text\" name=\"cognome\"></td>";
echo "</tr>";
echo "<tr>";
echo "<td align=left height=\"20\">Provincia:</td>";
echo "<td>";
echo "<select name=\"provincia\" size=\"1\">";
echo "<option value=\"1\">Agrigento</option>";
echo "<option value=\"2\">Alessandria</option>";
Ecc. Ecc.
echo "<option value=\"102\">Viterbo</option>";
echo "</select>";
echo "</td>";
echo "</tr>";
echo "<td vAlign=\"top\" align=\"left\"><input type=\"submit\" name=\"action\" value=\"Invia\">";
echo "</td>";
echo"</tr>";
echo"</table>";
echo"</form>";
?>
Non inserisce nulla, se tolgo il echo "<select name=\"provincia\" size=\"1\">";
echo "<option value=\"1\">Agrigento</option Ecc. Ecc.
funziona tutto