combinare due tavoli e visualizzare i dati in un array

Question

Ho 2 tabelle: prodotto e del carrello, desidero combinare queste 2 tabelle e visualizzare i dati in array in base a una particolare condizione, come segue:

tutti i prodotti in una specifica categoria dovrebbero avere visualizzato e se un particolare utente hanno acquistato qualsiasi prodotto tra i prodotti indicati poi i suoi dettagli dovrebbero ottenere visualizzati anche di fronte a quel prodotto

Il codice che ho fatto fino ora è

$catid = $_REQUEST['catid']; 
$userid  = $_REQUEST['userid']; 

$sql = "select * from productsize where catid = '".$catid."' GROUP BY productid"; 
$result = mysqli_query($con, $sql); 
if (mysqli_num_rows($result) > 0) 
    { 
     while($row = mysqli_fetch_assoc($result)) 
      { 
       $rows['catid'] = $row['catid']; 
       $rows['catname'] = $row['catname']; 
       $rows['productid'] = $row['productid']; 
       $rows['prodname'] = $row['prodname']; 
       $rows['prodimg'] = $row['prodimg']; 
       $row2[]=$rows; 
      } 
    } 

echo "<pre>"; 
print_r($row2); 
echo "</pre>"; 

Si dà una serie come questa

Array 
(
    [0] => Array 
     (
      [catid] => 2 
      [catname] => C1 
      [productid] => 13 
      [prodname] => P1 
      [prodimg] => 
     ) 

    [1] => Array 
     (
      [catid] => 2 
      [catname] => C1 
      [productid] => 14 
      [prodname] => P1 
      [prodimg] => 
     ) 

    [2] => Array 
     (
      [catid] => 2 
      [catname] => C1 
      [productid] => 15 
      [prodname] => P3 
      [prodimg] => 
     ) 

) 

Ma la matrice finale che voglio al posto della matrice sopra è

Array 
(
    [0] => Array 
     (
      [catid] => 2 
      [catname] => C1 
      [productid] => 13 
      [prodname] => P1 
      [prodimg] => 
      [size] => Array 
       (
        [0] => small 
        [1] => medium 
        [2] => large 
        [3] => perpiece 
       ) 
      [cost] => Array 
       (
        [0] => 10 
        [1] => 20 
        [2] => 30 
        [3] => 12 
       ) 
      [purchasedsize] => Array 
       (
        [0] => small 
        [1] => 0 
        [2] => large 
        [3] => 0 
       ) 
      [purchasedquantity] => Array 
       (
        [0] => 2 
        [1] => 0 
        [2] => 1 
        [3] => 0 
       ) 
      [userid] => 1 
     ) 

    [1] => Array 
     (
      [catid] => 2 
      [catname] => C1 
      [productid] => 14 
      [prodname] => P1 
      [prodimg] => 
      [size] => Array 
       (
        [0] => small 
        [1] => medium 
        [2] => large 
        [3] => 0 
       ) 
      [cost] => Array 
       (
        [0] => 15 
        [1] => 20 
        [2] => 25 
        [3] => 0 
       ) 
      [purchasedsize] => Array 
       (
        [0] => 0 
        [1] => medium 
        [2] => 0 
        [3] => 0 
       ) 
      [purchasedquantity] => Array 
       (
        [0] => 0 
        [1] => 1 
        [2] => 0 
        [3] => 0 
       ) 
      [userid] => 1 
     ) 

    [2] => Array 
     (
      [catid] => 2 
      [catname] => C1 
      [productid] => 15 
      [prodname] => P3 
      [prodimg] => 
      [size] => Array 
       (
        [0] => 0 
        [1] => medium 
        [2] => 0 
        [3] => perpiece 
       ) 
      [cost] => Array 
       (
        [0] => 0 
        [1] => 20 
        [2] => 0 
        [3] => 18 
       ) 
      [purchasedsize] => Array 
       (
        [0] => 0 
        [1] => 0 
        [2] => 0 
        [3] => 0 
       ) 
      [purchasedquantity] => Array 
       (
        [0] => 0 
        [1] => 0 
        [2] => 0 
        [3] => 0 
       ) 
      [userid] => 0 
     ) 

) 

Vista tabella dei prodotti (come si vedrà il tabella prodotto porta un productid e sotto ogni productid ci sono max 4 dimensioni (non ci saranno più di 4))

id catid catname productid prodsize cost prodname prodimg 
1 2  C1  13  small  10 P1 
2 2  C1  13  medium 20 P1 
3 2  C1  13  large  30 P1 
4 2  C1  13  perpiece 12 P1 
5 2  C1  14  small  15 P2 
6 2  C1  14  medium 20 P2 
7 2  C1  14  large  25 P2 
8 2  C1  15  perpiece 18 P3 
9 2  C1  15  medium 20 P3 

vista del carrello tavolo

id catid catname userid productid prodname prodsize quantity prodcost 
1  2  C1  1  13  P1  large  1   30  
2  2  C1  1  13  P1  small  2   10  
3  2  C1  1  14  P2  medium  1   20 

Qualcuno può aiutarmi a ottenere la matrice richiesto come il risultato?

Answer 1

Prova questa

$catid = $_REQUEST['catid']; 
$userid  = $_REQUEST['userid']; 

$sql= "SELECT p.catid, p.catname, p.productid, p.prodimg, 
    GROUP_CONCAT(p.prodsize ORDER BY p.id ASC) as size, 
    GROUP_CONCAT(p.cost ORDER BY p.id ASC) as cost, p.prodname, 
    GROUP_CONCAT(c.prodsize,'-',c.quantity) as cart_details, GROUP_CONCAT(DISTINCT(c.userid)) as user_id 
    FROM products p 
    LEFT JOIN cart c ON(c.productid = p.productid AND c.userid = '$userid' AND p.prodsize = c.prodsize) 
    WHERE p.catid ='$catid' 
    GROUP BY p.productid 
    ORDER BY user_id DESC, p.productid ASC"; 


$result = mysql_query($sql); 


if (mysql_num_rows($result) > 0) 
    { 
     $i = 0; 
     while($row = mysql_fetch_assoc($result)) 
      { 
       $rows[$i]['catid'] = $row['catid']; 
       $rows[$i]['catname'] = $row['catname']; 
       $rows[$i]['productid'] = $row['productid']; 
       $rows[$i]['prodname'] = $row['prodname']; 
       $rows[$i]['prodimg'] = $row['prodimg']; 
       $final_size = array_fill(0, 4, '0'); 
       $final_cost = array_fill(0, 4, '0'); 

       $size = explode(',', $row['size']); 
       $cost = explode(',', $row['cost']); 
       foreach($size as $k=>$sizecol) { 
        switch($sizecol) { 
         case 'small': 
          $array_key = '0'; 
          break; 
         case 'medium': 
          $array_key = '1'; 
          break; 
         case 'large': 
          $array_key = '2'; 
          break; 
         case 'perpiece': 
          $array_key = '3'; 
          break; 
        } 
        $final_size[$array_key] = $sizecol; 
        $final_cost[$array_key] = $cost[$k]; 

       } 


       $cart_details = explode(',', $row['cart_details']); 
       $purchasedsize = array_fill(0, 4, '0'); //Since you displayed this array has 4 values only 
       $purchasedquantity = array_fill(0, 4, '0'); 
       foreach($cart_details as $cart) { 
        if($cart != '') { 
         $details = explode('-', $cart); 
         $key = array_search($details[0], $size); 

         $purchasedsize[$key] = $details[0]; 
         $purchasedquantity[$key] = $details[1]; 
        } 

       } 

       $rows[$i]['size'] = $final_size; 
       $rows[$i]['cost'] = $final_cost; 
       $rows[$i]['purchasedsize'] = $purchasedsize; 
       $rows[$i]['purchasedquantity'] = $purchasedquantity; 
       $rows[$i]['userid'] = $row['user_id']; 

       $i++; 
      } 
    } 

echo "<pre>"; 
print_r($rows); 
    echo "</pre>"; 

L'array di uscita

Array 
(
[0] => Array 
    (
     [catid] => 2 
     [catname] => c1 
     [productid] => 13 
     [prodname] => P1 
     [prodimg] => 
     [size] => Array 
      (
       [0] => small 
       [1] => medium 
       [2] => large 
       [3] => perpiece 
      ) 

     [cost] => Array 
      (
       [0] => 10 
       [1] => 20 
       [2] => 30 
       [3] => 12 
      ) 

     [purchasedsize] => Array 
      (
       [0] => small 
       [1] => 0 
       [2] => large 
       [3] => 0 
      ) 

     [purchasedquantity] => Array 
      (
       [0] => 2 
       [1] => 0 
       [2] => 1 
       [3] => 0 
      ) 

     [userid] => 1 
    ) 

[1] => Array 
    (
     [catid] => 2 
     [catname] => c1 
     [productid] => 14 
     [prodname] => P2 
     [prodimg] => 
     [size] => Array 
      (
       [0] => small 
       [1] => medium 
       [2] => large 
       [3] => 0 
      ) 

     [cost] => Array 
      (
       [0] => 15 
       [1] => 20 
       [2] => 25 
       [3] => 0 
      ) 

     [purchasedsize] => Array 
      (
       [0] => 0 
       [1] => medium 
       [2] => 0 
       [3] => 0 
      ) 

     [purchasedquantity] => Array 
      (
       [0] => 0 
       [1] => 1 
       [2] => 0 
       [3] => 0 
      ) 

     [userid] => 1 
    ) 

[2] => Array 
    (
     [catid] => 2 
     [catname] => C1 
     [productid] => 15 
     [prodname] => P3 
     [prodimg] => 
     [size] => Array 
      (
       [0] => 0 
       [1] => medium 
       [2] => 0 
       [3] => perpiece 
      ) 

     [cost] => Array 
      (
       [0] => 0 
       [1] => 20 
       [2] => 0 
       [3] => 18 
      ) 

     [purchasedsize] => Array 
      (
       [0] => 0 
       [1] => 0 
       [2] => 0 
       [3] => 0 
      ) 

     [purchasedquantity] => Array 
      (
       [0] => 0 
       [1] => 0 
       [2] => 0 
       [3] => 0 
      ) 

     [userid] => 
    ) 

)