retrieving and echoing multiple values from mysql column - php

Question

I have created these 3 columns in my mysql table so I can have a list of each users transactions.
ticket_date, ticket_num, ticket_result
I also created a function to echo the value in those columns and it worked successfully.
function.php:
$sql = "SELECT *
FROM members
WHERE user_id = '{$_SESSION['user_id']}'";
$query = $this->db_connection->query($sql);
while ($row = $query->fetch_object()) {
global $me, $me2, $date;
$me = $row->ticket_num;
$me2 = $row->ticket_result;
$date = $row->ticket_date;
}
transactions.php
<table class="table">
<thead>
<th>Date</th>
<th>Ticket ID</th>
<th>Result</th>
</thead>
<tr>
<td><?php echo $date; ?> </td>
<td><?php echo $me; ?> </td>
<td><?php echo $me2; ?> </td>
</tr>
</table>
My problem now is that if a user has more than one transaction how would I be able to echo each value from a particular column separately. I am trying to echo each transaction into a .
Would I be able to store each value as an array so I could call it like this?
$row->ticket_num['0']
EDIT: I meant to ask how can I store the transactions into their respective columns. Such as storing more than one $ticket_date that apply to each transaction. Could I store information into the columns as an array so I can call each transaction using the array pointer?

Answer 1

I think the best thing to do, would be not to use global variables for this, unless there is any reason that your function can't return this data, i.e. it's returning something else. You could have something like this in your function.php:
$sql = "SELECT *
FROM members
WHERE user_id = '{$_SESSION['user_id']}'";
$query = $this->db_connection->query($sql);
$return = array();
while ($row = $query->fetch_object()) {
array_push($return, array($row->ticket_num, $row->ticket_result, $row->ticket_date ));
}
return $return
Then you can do this in your transactions.php:
<table class="table">
<thead>
<th>Date</th>
<th>Ticket ID</th>
<th>Result</th>
</thead>
<?php
$ticket = Whatever_Function();
foreach($ticket as $t){
echo"<tr> <td> ".$t[0]." </td><td>".$t[1]."</td><td>".$t[2]."</td></tr>";
}
?>
</table>
Edit
In relation to your additional question in the comments, a database structure like this should be set up:
By doing this, you are separating it, so that every table belongs to one thing or action. These can then be related to each other using an SQL Join like this:
SELECT * FROM Transactions tr
JOIN Users u ON u.UID = tr.UID
JOIN Tickets ti ON ti.TID = tr.TID
By looking at the above SQL code snippet, you should be able to see how it matches up the columns on the different tables. This creates one big virtual table that you can then search for stuff with, where their column names prepended with their given pseudonyms.
So if you wanted to get the email address of everyone that bought the ticket whose price was over £20, even though the tables you need aren't directly connected you could do:
SELECT u.email FROM Transactions tr
JOIN Users u ON u.UID = tr.UID
JOIN Tickets ti ON ti.TID = tr.TID
WHERE ti.Price > 20

Answer 2

Do something like this:
global $me, $me2, $date;
while ($row = $query->fetch_object()) {
$me[] = $row->ticket_num;
$me2[] = $row->ticket_result;
$date[] = $row->ticket_date;
}
transactions.php
<table class="table">
<thead>
<th>Date</th>
<th>Ticket ID</th>
<th>Result</th>
</thead>
<?php foreach($me as $k => $m){
echo "<tr>";
echo "<td>".$date[$k]."</td>";
echo "<td>".$m."</td>";
echo "<td>".$me2[$k]."</td>";
echo "</tr>";
?>
</table>