Не загружается фотография на бд

Код PHP/HTML, не грузит фото на бд(базу данных)

p.s переменная u_image существует в базе данных p.s2 Тип данных на бд - longblob

<?php
include 'config.php';
if (isset ($_POST["u_upload"])) {
  $u_image = $_POST["u_image"];
    if (empty($u_image)) {
        echo "You Didn't Uploaded The Image<br />";
    }
    else {
    $insert = mysqli_query($conn, "INSERT INTO `users` (`u_image`) VALUES ('$u_image')");
        echo "You Sucessfuly Uploaded The Image !<br />";
    }
}
if ($login == 0) {
  echo "<meta http-equiv='refresh' content='0; url=login.php'>";
}
else {
  $u_id = $_COOKIE["uid"];
  $getinfo = mysqli_query($conn, "SELECT * FROM users WHERE u_id = $u_id");
  $arr = mysqli_fetch_array($getinfo);
  echo '';
 ?>
<span>Name : <?php echo $arr["u_name"]; ?></span><br />
<span>Email : <?php echo $arr["u_email"]; ?></span><br />
<span>User ID : <?php echo $arr["u_id"]; ?></span><br />
<?php echo '<img src="data:image/png;base64,'.base64_encode( $arr["u_image"] ).'"/>'; ?><br />
<form action="profile.php" method="post">
  <label>Upload New Image</label>
  <input type="file" name="u_image" />
  <input type="submit" name="u_upload" value="Upload" /><br />
<a href="logout.php">Logout</a>
<?php } ?>