Export MYSQL Result to CSV - php

Question

I've been building a database to calculate termination fees.
The below code (termination.php) takes multiple rows selected from check boxes on a previous page, processes the query, and outputs in a loop to a simple HTML table. This is working as required.
<?php
require_once '.\Includes\dbcon.php';
$rowCount = count($_POST["select"]);
for ($i = 0; $i < $rowCount; $i++)
{
$sql = "UPDATE `{$_POST['customer']}` SET `DateOfCancellation`='{$_POST['dateofcancellation']} WHERE ServiceID={$_POST['select'][$i]}'";
if ($con->query($sql) === TRUE)
{
echo "";
}
else
{
echo "Error: " . $sql . "<br />" . $con->error;
}
}
?>
Back to Index</p>
<strong>Termination for <?php echo ucwords($_POST['customer']) ?> Based on Cancellation Date <?php echo $_POST['dateofcancellation'] ?></strong></p>
<table>
<tr>
<th>Service Name</th>
<th>License Start Date</th>
<th>License End Date</th>
<th>Cost Per Calendar Month</th>
<th>Balance on Termination</th>
<?php
$rowCount = count($_POST["select"]);
for ($i = 0; $i < $rowCount; $i++)
{
$sql = mysqli_query($con, "$select FROM `{$_POST['customer']}` WHERE ServiceID={$_POST['select'][$i]}");
$row[$i] = mysqli_fetch_array($sql); ?>
<tr>
<td><?php
echo $row[$i]['ServiceName']; ?></td>
<td><?php
echo $row[$i]['LicenseStart']; ?></td>
<td><?php
echo $row[$i]['LicenseEND']; ?></td>
<td>£<?php
echo $row[$i]['CostPCM']; ?></td>
<td>£<?php
echo $row[$i]['CostOfTermination']; ?></td>
<?php
}
$sql = "UPDATE `{$_POST['customer']}` SET `DateOfCancellation`='0000-00-00'";
if ($con->query($sql) === TRUE)
{
echo "";
}
else
{
echo "Error: " . $sql . "<br />" . $con->error;
}
$sum = 0;
for ($i = 0; $i < $rowCount; $i++)
{
$sum = $sum + $row[$i]['CostOfTermination'];
}
echo "<strong>The Total Balance of Termination is: </strong>£" . $sum;
echo "<p>";
$sum = 0;
for ($i = 0; $i < $rowCount; $i++)
{
$sum = $sum + $row[$i]['CostPCM'];
}
echo "<strong>Balance of Termination per Month: </strong>£" . $sum;
echo "<p>";
?>
</tr>
What do I need to do to export the data in the table to an Excel file (ideally) or a CSV file. I've tried a few different methods and can get the headers but not the actual data. I think the for loop is what's throwing me off.

Answer 1

Try something like this:
<?php
$titles = "Service Name,License Start Date,License End Date,Cost Per Calendar Month,Balance on Termination";
$rowCount = count($_POST["select"]);
echo $titles;
for ($i = 0; $i < $rowCount; $i++)
{
$sql = mysqli_query($con, "$select FROM `{$_POST['customer']}` WHERE ServiceID={$_POST['select'][$i]}");
$row[$i] = mysqli_fetch_array($sql);
echo
$row[$i]['ServiceName'] . "," .
$row[$i]['LicenseStart'] . "," .
$row[$i]['LicenseEND'] . "," .
$row[$i]['CostPCM'] . "," .
$row[$i]['CostOfTermination'] ."<br>";
}