while loop always print last inserted row result - php

Question

Problem is while loop always showing last inserted row result. I've tried this below code to follow/unfollow button option. For example I'm a user id=1. I have already followed user id=4. Now, I want to follow user id=5. When i click follow button(id=5) it turns into Unfollow properly. But, I have already followed user id=4. That turns into Follow. This is my problem.
Then I tried echo $following;. it Prints 5555. That means last inserted data. But I want 45. I'm sure I've made a mistake in my while loop. But I don't know what I should change?
<?php
try
{
$stmt = $conn->prepare("SELECT * FROM users ORDER BY Autoid");
$stmt->errorInfo();
$stmt->execute();
$sth = $conn->prepare("SELECT * FROM followers ORDER BY Autoid");
$sth->errorInfo();
$sth->execute();
while($follow_row = $sth->fetch(PDO::FETCH_ASSOC))
{
$following = $follow_row['Following'];
$follower = $follow_row['Follower'];
}
while ($row = $stmt->fetch(PDO::FETCH_ASSOC))
{
echo "<tr>";
echo "<td>". $row['Autoid'] ."</td>";
echo "<td>". $row['Name'] ."</td>";
// echo $row['Following'];
if($_SESSION['sesuname'] == $row['Username'])
{
echo "<td class='itsyou' >Its You ". $_SESSION['sesuname'] ."</td>";
}
else
{
if(($follower == $_SESSION['sesid']) AND ($following != $row['Autoid']))
{
//echo "<td>true</td>";
echo $following;
echo "<td>";
echo "<form id='jsform' method='post' action='subscribe.php'>";
echo "<input type='hidden' name='id' value=" . $row['Autoid'] . " />";
echo "<button class='follow' >Follow</button>";
echo "</form>";
echo "</td>";
}
else
{
//echo "<td>false</td>";
echo "<td>";
echo "<form id='ufform' method='post' action='unsubscribe.php'>";
echo "<input type='hidden' name='uid' value=" . $row['Autoid'] . " />";
echo "<button class='follow' >UnFollow</button>";
echo "</form>";
echo "</td>";
}
}
echo "</tr>";
}
} catch (PDOException $e) {
'Database Error : ' .$e->getMessage();
}
?>

Answer 1

This code:
while($follow_row = $sth->fetch(PDO::FETCH_ASSOC))
{
$following = $follow_row['Following'];
$follower = $follow_row['Follower'];
}
Simply OVERWRITES $following and $follower every time you fetch a row, leaving you with the LAST row fetched in the variables. Perhaps you want something more like
$following[] = $follow_row['Following'];
$follower[] = $follow_row['Follower'];
^^--- append new row value to an array.