Question

I’ve got a query that gives me something like the following result when I would print out a table:

+---------------------------------------------------------------------+
|    ID      |    Name     |    Color      |     Size     |    Qty    |
+---------------------------------------------------------------------+
|    1       |    First    |    Green      |      S       |     1     |
|    2       |    First    |    Green      |      L       |     2     |
|    3       |    First    |    Green      |      XL      |     1     |
|    4       |    First    |    Red        |      M       |     2     |
|    5       |    First    |    Red        |      L       |     3     |
|    6       |    Second   |    Blue       |      S       |     1     |
|    7       |    Second   |    Blue       |      M       |     4     |
+---------------------------------------------------------------------+

Now I want to make an overview (in real life these are products) where someone can click a button to edit or delete. I want to loop over it with a foreach loop or something and print it out something like this:

+========================================================================+
|    Name     |    Color      |     Size     |    Qty    |    Action     |
+========================================================================+
|    First    |    Green      |      S       |     1     |  Edit|Delete  |
|             |               |      L       |     2     |  Edit|Delete  |
|             |               |      XL      |     1     |  Edit|Delete  |
+------------------------------------------------------------------------+
|    First    |    Red        |      M       |     2     |  Edit|Delete  |
|             |               |      L       |     3     |  Edit|Delete  |
+------------------------------------------------------------------------+
|    Second   |    Blue       |      S       |     1     |  Edit|Delete  |
|             |               |      M       |     4     |  Edit|Delete  |
+------------------------------------------------------------------------+

but somehow I just can’t get my head around how I would program this loop. Or should I change the query?
I hope someone can help. If you need more information, please tell me.

Answer 1

You could do some of this in the database which could well make it easier to display the data in your code:

select 
    group_concat(ID) as id, 
    name, 
    color, 
    group_concat(size) as size, 
    group_concat(qty) as qty 
from 
    myTable
group by
    name,
    color

The result would look like this:

ID     | name  | color | size   | qty
1,2,3  | First | Green | S,L,XL | 1,2,1
etc...

Now in your code, this makes it much easier to output the way you would like it to.

echo "<table>";
while($row=someFetchFromDatabase($results))
{
    echo "<tr><td>".$row['name']."</td><td>".$row['color']."</td>";
    $temp=explode($row['size']);
    echo "<td>";
    foreach($temp as $val)
    {
        echo $val."<br>";
    }
    echo "</td>";
    $temp=explode($row['qty']);
    echo "<td>";
    foreach($temp as $val)
    {
        echo $val."<br>";
    }
    echo "</td>";
    $temp=explode($row['IDs']);
    echo "<td>";
    foreach($temp as $val)
    {
        echo "<a href='someLink.php?action=edit&ID=".$val."'>Edit</a> | <a href='someLink.php?action=delete&ID=".$val."'>Delete</a>";
    }
    echo "</td></tr>";
}
echo "</table>'