$base = $_POST['base'];
   $nome = $_POST['nome'];


$sql = "SELECT base FROM bases_table WHERE base = '$base'";
->> LINE 26 if(mysql_num_rows($sql) == 0) {
     // doesn't exist already, do stuff
	 "INSERT INTO bases_table (base, nome) VALUES" . "('$base' , '$nome')";
} else {
    // does exist, do something else
}
//*that part
mysql_select_db('a2322671_spabr');
$retval = mysql_query( $sql, $conn );
if(! $retval )
{
  die('Could not enter data: ' . mysql_error());
}
echo "Entered data successfully\n";
mysql_close($conn);
}
else