php code to select sum and count of column - php

Question

there are multiple column in my table ..
col1 col2 col3 price
500 700 100 10
501 700 100 20
502 700 100 30
503 700 100 10
4 70
I need to get count of col1 and display its sum.
and also display sum of price column...
But the main thing is i need to display this in last row....after all data...how can select this and echo in last row...
plz help me...
I need to echo exactly as i put the data in above table...
I need sql query and also need help to echo only sum of this two column in last row only......
SELECT *,IFNULL(col1,'SUM'), count(*) as count FROM coupon_entry WHERE Group By col1 WITH ROLLUP
<?php if (is_array($data)) { foreach($data as $row){ ?>
<tr>
<td><?php echo htmlspecialchars($row['col1']); ?></td>
<td><?php echo htmlspecialchars($row['col2']); ?></td>
<td><?php echo htmlspecialchars($row['col3']); ?></td>
<td><?php echo htmlspecialchars($row['price']); ?></td>
</tr>
<?php } }?>

Answer 1

One solution is to calculate the sum in PHP with variables :
<?php if (is_array($data)) {
$totalCol1 = 0;
$totalPrice = 0;
foreach($data as $row){
$totalCol1 += $row['col1'];
$totalPrice += $row['price'];
?>
<tr>
<td><?php echo htmlspecialchars($row['col1']); ?></td>
<td><?php echo htmlspecialchars($row['col2']); ?></td>
<td><?php echo htmlspecialchars($row['col3']); ?></td>
<td><?php echo htmlspecialchars($row['price']); ?></td>
</tr>
<?php }
<tr>
<td><?php echo $totalCol1;?></td>
<td></td>
<td></td>
<td><?php echo $totalPrice;?></td>
</tr>
}?>

Answer 2

Either you have to do 2 separate queries or else you have to do your calculations in PHP - either one is fairly simple although the PHP solution will probably be slightly (negligibly?) faster.
double-query:
$r = query('SELECT *
FROM yada-yada');
while ($row = fetch($r)) {
echo "<td>$row[col1]</td>\n";
echo "<td>$row[col2]</td>\n";
echo "<td>$row[col3]</td>\n";
echo "<td>$row[price]</td>\n";
}
$r2 = query('SELECT COUNT(*) as cnt, sum(col1) as sum_col1,
sum(price) as sum_price
FROM yada-yada...');
if ($row = fetch($r2)) {
echo "<td>$row['cnt']</td><td>$row['sum_col1']</td>...$row['sum_price']...\n";
}
calculate in PHP:
$cnt = $sum_col1 = $sum_price = 0;
$r = query('SELECT *
FROM yada-yada');
while ($row = fetch($r)) {
echo "<td>$row[col1]</td>\n";
echo "<td>$row[col2]</td>\n";
echo "<td>$row[col3]</td>\n";
echo "<td>$row[price]</td>\n";
$cnt++;
$sum_col1 += $row['col1'];
$sum_price += $row['price'];
}
echo "<td>$cnt</td><td>$sum_col1</td>...$sum_price...\n";

Answer 3

Below is my sql query to get count and sum of column.
SELECT COUNT(coupon) As Total,SUM(Price) AS TotalPrice FROM coupon_entry
And put this in seprate row below table...
<?php
foreach($tot as $tota)
?>
<tr style="background-color:#33CCFF;">
<td colspan="2" style="text-align:right; font-weight:bold;">Total Coupon</td>
<td><?php echo $tota['Total'];?></td>
<td style="text-align:right; font-weight:bold;">Total Amount in Rs</td>
<td><?php echo $tota['TotalPrice'];?></td>
</tr>
<?php }?>