<?php
session_start();

include 'dbh.php';

$Username = $_POST['Username'];
$Password = $_POST['Password'];

$sql = "SELECT * FROM account WHERE Username='$Username'";
$result = $conn->query($sql);
while ($row = $result->fetch_assoc()) {
    $UsernameActualhashedPassword = $row['Password'];
}

$input = $Password;

echo $input;
echo $UsernameActualhashedPassword;
echo password_verify($input, $UsernameActualhashedPassword);