How to sort in while loop - php

Question

Hello here is my current code:
$sqlpack = "Select * from package_in_plan where plan_id='$package_id' order by plan_id";
$planres = mysqli_query($conn,$sqlpack);
$plan = array();
while ($row1 = mysqli_fetch_assoc($planres)){
$plan[] = $row1['package_id'];
}
$plan_1 = implode(',', $plan);
for ($x = 0; $x < count($plan); $x++) {
$sql_service = "Select * from service_in_package where package_id='".$plan[$x]."'";
$chid = mysqli_query($conn,$sql_service);
while ($row = mysqli_fetch_array($chid)){
$ch_id = $row['service_id'];
$sql = "Select * from itv where status='1' and id='$ch_id' order by number asc";
$results = mysqli_query($conn,$sql);
while ($row = mysqli_fetch_array($results)){
$nr = $row['id'];
$namn = $row['name'];
$chnr = $row['number'];
echo $nr;
echo $namn;
echo $chnr;
}
}
}
What i need is the output to be sorted by number($chnr), right now my code is not sorting because it's receiving specific id from previous select ($ch_id).
How can i let the output of $results to be sorted "order by number".
Number is INT in itv table.

Answer 1

You could make use of subqueries which results in a single query that can be sorted.
$sql = "Select * from itv where status='1' and id IN
(Select service_id from service_in_package where package_id IN
(Select package_id from package_in_plan where plan_id='$package_id' order by plan_id))
order by number asc";
$results = mysqli_query($conn,$sql);
while ($row = mysqli_fetch_array($results)){
$nr = $row['id'];
$namn = $row['name'];
$chnr = $row['number'];
echo $nr;
echo $namn;
echo $chnr;
}