try {
                    $selectProfilesQuery = 'SELECT profile_id, user_id, profile_name, profile_picture_50, profile_tile_cover FROM profile WHERE user_id = :user_id';
                    $prepSelectProfiles = $conn->prepare($selectProfilesQuery);
                    $prepSelectProfiles->bindParam(':user_id', $uid, PDO::PARAM_INT);
                    $prepSelectProfiles->execute();
                    $profilesResult = $prepSelectProfiles->fetchAll();
                }
                catch(PDOException $e) {
                    $conn = null;
                    header('Location: ../errors/error_101.html');
                }

                while ($profiles = $profilesResult->fetch(PDO::FETCH_ASSOC)) {
                    $profileId = $profiles['profile_id'];
                    $profileTileBg = $profiles['profile_tile_cover'];
                    $profileImage = $profiles['profile_picture_50'];
                    $profileName = $profiles['profile_name'];
                }

while ($profiles = $profilesResult->fetch(PDO::FETCH_ASSOC)) {

foreach($profilesResult as $profiles) {
  //...
}

$profilesResult = $prepSelectProfiles->fetchAll();

while ($profiles = $profilesResult->fetch(PDO::FETCH_ASSOC)) {

while ($profiles = $prepSelectProfiles->fetch(PDO::FETCH_ASSOC)) {

$profilesResult = $prepSelectProfiles->fetchAll();

$sql = 'SELECT profile_id, user_id, profile_name, profile_picture_50, profile_tile_cover '
     . 'FROM profile WHERE user_id = :user_id';
$stmt = $conn->prepare($sql);
$stmt->execute([$uid]);
$profiles = $stmt->fetchAll();
while (foreach $profiles as $row) {
    extract($row);
}