How to echo specific data in loop with a condition specific to the last row
-
07-07-2021 - |
Question
For an accounting system, I'm using PHP & MySQL. I've two tables "GROUP" and "ACHEADS".
In the GROUP table, I have:
---------------------
| id (AI) | group |
---------------------
| 1 | Group 1 |
| 2 | Group 2 |
---------------------
In the ACHEADS table, I have:
-----------------------------------------
| id (AI) | ac_head | amount | j_id |
-----------------------------------------
| 1 | Something 1 | 2000 | 1 |
| 2 | Something 2 | 1000 | 1 |
| 3 | Something 3 | 5000 | 2 |
| 4 | Something 4 | 4000 | 2 |
| 5 | Something 5 | 8000 | 2 |
-----------------------------------------
I've joined the two tables as GROUP.id <<->> ACHEADS.j_id
Now I need to preview the data like this:
----------------------------------------------
Particulars | Details | Total |
----------------------------------------------
Group 1 | | |
Something 1 | 2000 | |
Something 2 | 1000 | 3000 |
----------------------------------------------
Group 2 | | |
Something 3 | 5000 | |
Something 4 | 4000 | |
Something 5 | 8000 | 17000 |
----------------------------------------------
GRAND TOTAL | | 20000 |
------------------------------------==========
Challenges
- The table will be dynamic and will generate within a PHP loop (I'm using a WHILE loop)
- Remember: it's a table and if I miss echoing a td, then the table will break up
Problems
- When I'm using the loop it's echoing the data on the Details td accurately. But the sum of the details row according to j_id is also echoing in each td
Preview here:
----------------------------------------------
Particulars | Details | Total |
----------------------------------------------
Group 1 | | |
Something 1 | 2000 | 3000 |
Something 2 | 1000 | 3000 |
----------------------------------------------
Group 2 | | |
Something 3 | 5000 | 17000 |
Something 4 | 4000 | 17000 |
Something 5 | 8000 | 17000 |
----------------------------------------------
My thoughts
- If I can check whether it is the last data of the query, if isset, then echo the total amount with it's td. (But remember the Challenge#2)
- Does it require a foreach loop?
I failed
- I tried checking max(id), it works fine in SQL, but can't use it in condition within a loop.
(If you still can't understand me, then on the second phase, I'll post my code.)
Solution
I would do 2 loops:
- Fetch
id
fromGROUP
- Fetch
amount
fromACHEADS
based onj_id
This would look something like (non-tested code):
echo '<table><tr><td>Particulars</td><td>Details</td><td>Total</td></tr>';
$total = 0;
$q1 = "SELECT id FROM `GROUP`";
$res1 = mysqli_query($q1);
while($row1 = mysqli_fetch_assoc($res1)) {
echo
$group_total = 0;
$j_id = $row1[id];
$q2 = "SELECT ac_head, amount FROM ACHEADS WHERE j_id = $j_id";
$res2 = mysqli_query($q2);
while($row2 = mysqli_fetch_assoc($res1)) {
echo '<tr><td>' . $row2[ac_head] . '</td>';
echo '<td>' . $row2[amount] . '</td></tr>';
$group_total = $group_total + $row2[amount];
$total = $total + $row[amount];
}
echo '<tr><td colspan="3" align="right">' . $group_total . '</td></tr>';
}
echo '<tr><td>GRAND TOTAL</td>';
echo '<td colspan="2" align="right">' . $total . '</td></tr>';
echo "</table>";
OTHER TIPS
njk rockz!
It worked nicely. Thanks a lot, brother - it helped me a lot, I can't explain.
Here is my final code:
<tr style="background: #000; color:#fff;">
<th style="width:150px;">Particulars</th>
<th>Details</th>
<th>Amount</th>
</tr>
<tr>
<td>Opening Balance</td>
<td></td>
<td>500000</td> <!-- till not dynamic -->
</tr>
<?php
$total = 0;
$se = "SELECT * FROM group";
$res = mysql_query($se) or die (mysql_error());
while ($row = mysql_fetch_array($res))
{
?>
<tr>
<td colspan="3" style="font-weight:bold;"><?php echo $row['group']; ?></td>
</tr>
<tr>
<?php
$group_total = 0;
$se1 = "SELECT ac_head, amount FROM `acheads` WHERE `j_Id` = '".$row['id']."'";
$res1 = mysql_query($se1) or die (mysql_error());
while ($row1 = mysql_fetch_array($res1))
{
$group_total = $group_total + $row1['amount'];
?>
<td><?php echo $row1['ac_head']; ?></td>
<td><?php echo $row1['amount']; ?></td>
<td> </td>
</tr>
<?php
}
echo '<tr><td colspan="3" align="right">' . $group_total . '</td></tr>';
}
?>
</table>
</code>
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