Get data and insert it using loop (MSQL/I) - php

Question

I select data from table A and what I want is to insert that data using a loop.
Here's my code:
$getlvls = "SELECT * FROM `access_chart` WHERE `ac_id`='$data->ac_id'";
$qry99 = $con->query($getlvls);
while($row = $qry99->fetch_assoc()) {
$lvl1 = $row['lvl1'];
$lvl2 = $row['lvl2'];
$lvl3 = $row['lvl3'];
$lvl4 = $row['lvl4'];
}
for($jaa = 1; $jaa <=4; $jaa++){
$auth_id = '$lvl'+$jaa;
$sql1 = "INSERT INTO `overtime_log`(`ot_id`, `lvl`, `user_id`) VALUES('$ot_id', $jaa, '$auth_id')";
$qry = $con->query($sql1);
}
I don't include all of my codes. Everything works, except for inserting the column $lvl1, $lvl2, $lvl3 and $lvl4 using a loop. Or if you would suggest other logic that's find.
Thanks in advance.
EDITED
Select the data:
|----------------|
|--access_chart--| TABLE
|----------------|
-------------------
|---------|---------------|--------|--------|--------|--------|
|--ac_id--|--access_name--|--lvl1--|--lvl2--|--lvl3--|--lvl4--|
|---------|---------------|--------|--------|--------|--------|
| 1 | MIS Dept | 4 | 5 | 9 | 0 |
This might be the output after INSERT QUERY:
|----------------|
|--overtime_log--| TABLE
|----------------|
-------------------
|---------|-------|-----------|
|--ot_id--|--lvl--|--user_id--|
|---------|-------|-----------|
| 1 | 1 | 4 |
| 1 | 2 | 5 |
| 1 | 3 | 9 |
| 1 | 4 | 0 |

Answer 1

Not sure where $ot_id is defined, but assuming you're using only ids and SQL injection isn't a concern, you could use something like:
$getlvls = "SELECT * FROM `access_chart` WHERE `ac_id`='$data->ac_id'";
$qry99 = $con->query($getlvls);
while($row = $qry99->fetch_array())
{
foreach(array(1=>$row['lvl1'],2=>$row['lvl2'],3=>$row['lvl3'],4=>$row['lvl4']) as $key=>$lvl)
{
$sql1 = "INSERT INTO `overtime_log`(`ot_id`, `lvl`, `user_id`) VALUES('$ot_id', $key, '$lvl')";
$qry = $con->query($sql1);
}
}
Alternatively you could avoid the inner loop altogether and just write the INSERT using multiple-insert syntax:
$getlvls = "SELECT * FROM `access_chart` WHERE `ac_id`='$data->ac_id'";
$qry99 = $con->query($getlvls);
while($row = $qry99->fetch_array())
{
$con->query("INSERT INTO `overtime_log`(`ot_id`, `lvl`, `user_id`)
VALUES('$ot_id', 1, '{$row['lvl1']}'),
('$ot_id', 2, '{$row['lvl2']}'),
('$ot_id', 3, '{$row['lvl3']}'),
('$ot_id', 4, '{$row['lvl4']}')");
}