Ho risolto così:
Codice PHP:
<?phpecho("<link rel='stylesheet' type='text/css' href='table.css'>");
//Retreive information from form
 
$kind=$_POST["kind"]; $position=$_POST["position"]; $size=$_POST["size"]; $price=$_POST["price"]; $event=$_POST["event"]; $weather=$_POST["weather"]; $name=$_POST["name"]; $pur_date=$_POST["pur_date"]; $color=$_POST["color"]; $where="1=1";                if (!empty($kind)){                                                $campi="kind"." ";                        $valorekind=$kind;                        $where=$where." AND kind="."'".$kind."'";                        }            if (!empty($position)){                                                $campi=$campi."position"." ";                        $valoreposition=$position;                        $where=$where." AND position="."'".$position."'";                        }                        if (!empty($size)){                                                $campi=$campi."size"." ";                        $valoresize=$size;                        $where=$where." AND size="."'".$size."'";                        }                        if (!empty($price)){                                                $campi=$campi."price"." ";                        $valoreprice=$price;                        $where=$where." AND price="."'".$price."'";                        }                        if (!empty($event)){                                                $campi=$campi."event"." ";                        $valoreevent=$event;                        $where=$where." AND event="."'".$event."'";                        }                        if (!empty($weather)){                                                $campi=$campi."weather"." ";                        $valoreweather=$weather;                        $where=$where." AND weather="."'".$weather."'";                        }                        if (!empty($name)){                                                $campi=$campi."name"." ";                        $valorename=$name;                        $where=$where." AND name="."'".$name."'";                        }                        if (!empty($pur_date)){                                                $campi=$campi."pur_date"." ";                        $valorepur_date=$pur_date;                        $where=$where." AND pur_date="."'".$pur_date."'"." AND ";                        }                        if (!empty($color)){                                                $campi=$campi."color"." ";                        $valorecolor=$color;                        $where=$where." AND color="."'".$color."'";                        }                        $query"SELECT *FROM clothes WHERE ".$where ;                        //$query= "SELECT ".$campi."FROM clothes WHERE ".$where ;//echo($query);//Connection        $link = mysql_connect('localhost', 'idnob', 'Zenemecca5689');        if (!$link) { die('Could not connect: ' . mysql_error()); }        //Select DB        mysql_select_db(my_idnob) or die ("Error in selection database ".mysql_error());$result=mysql_query($query) or die (mysql_error());echo("<table>");echo("    <tr> <td>Name</td> <td>Kind</td> <td>Position</td> <td>Size</td> <td>Price</td> <td>Event</td> <td>Weather</td> <td>Purchase Date</td> <td>Color</td> <td>Image</td></tr>");
//if (empty($result)){echo ("No clothes for the specified details.");}//else{while($row = mysql_fetch_array($result))          {              echo "<tr>";            echo "<td>" . $row['name'] . "</td>";              echo "<td>" . $row['kind'] . "</td>";              echo "<td>" . $row['position'] . "</td>";              echo "<td>" . $row['size'] . "</td>";              echo "<td>" . $row['price'] . "</td>";                        // or group by position              echo "<td>" . $row['event'] . "</td>";                        // or left bottom, center middle, right top              echo "<td>" . $row['weather'] . "</td>";              echo "<td>" . $row['pur_date'] . "</td>";              echo "<td>" . $row['color'] . "</td>";              echo "<td><img src='upload/" . $row['image'] . "' height='70' width='70' alt='".$row['name']."'></td>";                            echo "</tr>";          }        echo "</table>";        echo "</div>";//}

?>