I want to update data in mysql using the get method - php

Question

Good morning I am seeking for a help regarding on my php code. I have a problem updating a value in database using get method.
Here is the function I have a form method which is GET and i have a forloop where in inside that loop counts the number of data with the same tracking code now. for example i have a 3 same tracking code so i have a 3 textbox and also i have a 3 submit button. Now i want to update the textbox 1 and click submit it will automatically updated.
For reference here is my code:
enter code here<form method="get" action="view-reservation.php">
<table class="table table-striped">
<tr>
<td>January</td>
<td>February</td>
<td>March</td>
<td>April</td>
<td>May</td>
<td>June</td>
<td>July</td>
<td>August</td>
<td>September</td>
<td>October</td>
<td>November</td>
<td>December</td>
<td></td>
</tr>
<?php foreach ($view as $key => $data):?>
<tr>
<td><input type="hidden" name="track" size="1" value="<?php echo $data->track?>">
<input type="hidden" name="pid" size="1" value="<?php echo $data->pid?>">
<input type="text" name="jan" size="1" value="<?php echo $data->jan?>"></td>
<td><input type="text" name="feb" size="1" value="<?php echo $data->feb?>"></td>
<td><input type="text" name="mar" size="1" value="<?php echo $data->mar?>"></td>
<td><input type="text" name="apr" size="1" value="<?php echo $data->apr?>"></td>
<td><input type="text" name="may" size="1" value="<?php echo $data->may?>"></td>
<td><input type="text" name="jun" size="1" value="<?php echo $data->jun?>"></td>
<td><input type="text" name="jul" size="1" value="<?php echo $data->jul?>"></td>
<td><input type="text" name="aug" size="1" value="<?php echo $data->aug?>"></td>
<td><input type="text" name="sep" size="1" value="<?php echo $data->sept?>"></td>
<td><input type="text" name="oct" size="1" value="<?php echo $data->oct?>"></td>
<td><input type="text" name="nov" size="1" value="<?php echo $data->nov?>"></td>
<td><input type="text" name="dec" size="1" value="<?php echo $data->dec?>"></td>
<td>
<a href="view-reservation.php?track=<?php echo $data->track?>&&pid=<?php echo $data->pid?>&&jan=<?php echo $data->jan?>"
class="label label-danger">Update Payment</a></td>
</tr>
<?php endforeach;?>
<?php endif?>
</form>
</table>
Here is my query when i execute:
if(isset($_GET['track']) && isset($_GET['pid']) && isset($_GET['jan']))
{
//
$jan = filter($_GET['jan']);
$track = filter($_GET['track']);
$pid = filter($_GET['pid']);
$query = $con->query("update payment set jan = '500' where track = '$track' and pid='$pid'") or die(mysqli_errno());
if($query)
{
echo'updated';
}
}