How to add each data inside a column of a table in both mysql and PHP?
Question
I have a column name 'sale' and inside the sale column there are list of sales per customer. how do i add all the sales of each customer and then echo the total sales under the table?
> ?php
include('conn.php');
$sql = "SELECT * FROM sales";
$result = mysqli_query($conn,$sql);
$count = mysqli_num_rows($result);
if($count>0)
{
echo "<html><head></head><body><table border=1>
<th>CODE</th>
<th>Employee Name</th>
<th>Customer</th>
<th>Sales</th>";
while($row = mysqli_fetch_assoc($result))
{
echo"<tr>";
echo"<td>".$row['empcode']."</td>
<td>".$row['fullname']."</td>
<td>".$row['customercode']."</td>
<td>".$row['sales']."</td></tr>";
}
echo"</table>";
}
?>
3 answers
solution1
0 ACCPTED 2018-08-30 04:19:05
You need to add a variable outside of the loop and increment it with every iteration of the loop
$totalSales = 0;
if($count>0)
{
echo "<html><head></head><body><table border=1>
<th>CODE</th>
<th>Employee Name</th>
<th>Customer</th>
<th>Sales</th>";
while($row = mysqli_fetch_assoc($result))
{
echo"<tr>";
echo"<td>".$row['empcode']."</td>
<td>".$row['fullname']."</td>
<td>".$row['customercode']."</td>
<td>".$row['sales']."</td></tr>";
$totalSales += $row['sales'];
}
echo"</table>";
}
solution2
0 2018-08-30 04:21:56
For MySQL you can use SUM group function.
eg SELECT SUM(sales) as total FROM table_name;
And for PHP, you can do something like this:
$total = 0;
while($row = mysqli_fetch_assoc($result))
{
$total += $row['sales'];
echo"<tr>";
echo"<td>".$row['empcode']."</td>
<td>".$row['fullname']."</td>
<td>".$row['customercode']."</td>
<td>".$row['sales']."</td></tr>";
}
// Print total at the end
echo "<tr>";
echo "<td colspan='3'>Total</td>";
echo "<td>".$total."</td>";
echo "</tr>";
Hope this can help you.
solution3
0 2018-08-30 05:03:52
run
$sql = "SELECT *, SUM(sales) AS total_sale FROM sales GROUP BY customercode ";
instead of
$sql = "SELECT * FROM sales";
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