want to display all activites under all services using php - php

Question

<?php
include("connection.php")
$serviceid = "select * from services";
$servicevalue = $conn->query($serviceid) or die ($conn->error.__LINE__);
$activityid = "select * from activity";
$activityvalue = $conn->query($activityid) or die ($conn->error.__LINE__);
$perid = "select * from perodicity";
$pervalue = $conn->query($perid) or die ($conn->error.__LINE__);
while($row=$servicevalue->fetch_assoc()) :
?>
<input name="activity[]" type="checkbox" value="<?php echo $row['id']; ?>" id="" />
<?php
echo $row['servicename'];
echo "<br>";
?>
<br><br>
<?php while($row=$activityvalue->fetch_assoc()) :?>
<input name="activity[]" type="checkbox" value="<?php echo $row['id']; ?>" />
<?php
$activity=$row['nameofactivity'];
echo "$activity";
echo "<br>";
endwhile;
?>
<br>
<?php endwhile; ?>
my output :
incometax
form
incometax
return
2.GST
form
2.GST
return
I Want
1.Incometax
form
Return
2.GST
form
return

Answer 1

It's because in both while() loops you assign a value to the same variable - $row. In your second while() loop, rename your variable to something like $row2 and see if it fixes your problem.
Edit
Thinking too quickly, what about this:
<?php
include("connection.php");
// Collect services.
$serviceid = "select * from services";
$servicevalue = $conn->query($serviceid) or die ($conn->error.__LINE__);
$services = [];
while ($row = $servicevalue->fetch_assoc()) {
$services[] = $row;
}
// Collect activities.
$activityid = "select * from activity";
$activityvalue = $conn->query($activityid) or die ($conn->error.__LINE__);
$activities = [];
while ($row = $activityvalue->fetch_assoc()) {
$activities[] = $row;
}
// Collect something else?
$perid = "select * from perodicity";
$pervalue = $conn->query($perid) or die ($conn->error.__LINE__);
$pers = [];
while ($row = $pervalue->fetch_assoc()) {
$pers[] = $row;
}
foreach ($services as $service):
?>
<input name="activity[]" type="checkbox" value="<?php echo $service['id']; ?>" id="" />
<?php
echo $service['servicename'];
echo "<br>";
?>
<br><br>
<?php foreach ($activities as $activity) : ?>
<input name="activity[]" type="checkbox" value="<?php echo $activity['id']; ?>" />
<?php
echo $activity['nameofactivity'];
echo "<br>";
endforeach;
?>
<br>
<?php
endforeach;
Changes: we first collect all services and activities. Then we loop through all services and for each service through all activities, and we output them.