如何在评论部分中发布“blob”图像

First off, I am VERY new to PHP coding. I've been more than a few days getting everything to work that is working and have been watching hours of video. Yet, for the life of me, I cannot get this to "completely" function.

When I click my upload button, the author, date_time group, and the comment work fine. They are posting to the database and posting to the "GET" section when I click upload. The thumbnail on the other hand just gives the broken path image. I'm sure it's something I'm not defining correctly, but I am completely lost. I have posted my comment box form source code, connection, and functions. My database is in commentsection/comments/image. The "image" column of the database type is set to BLOB.

Please help...

SOURCE CODE:

<?php
echo "<form method='POST' enctype='multipart/form-data 'action='".setComments($conn)."'>
    <input type='hidden' name='uid' value='Anonymous'>
    <input type='hidden' name='date' value='".date('Y-m-d H:i:s')."'>
    <label>Upload Image</label><br>
    <input type='file' name='image' id='image'><br>,<br>
    <textarea name='message'></textarea><br><br>
    <button type='submit' name='commentSubmit'>Upload</button>
</form>";


getComments($conn);     
?>

CONNECTION:

$conn = mysqli_connect('localhost','root','', 'commentsection');

if (!$conn) {
    die("Connection failed:".mysqli_connect_error());

}

FUNCTIONS:

<?php

function setComments($conn) {
if (isset($_POST['commentSubmit'])) {
    $uid = $_POST['uid'];
    $date = $_POST['date'];
    $message = $_POST['message'];
    $image = $_POST['image'];

    $sql = "INSERT INTO comments (uid, date, image, message) values ('$uid', '$date','$image', '$message')";
    $result = mysqli_query($conn, $sql);
}
}

function getComments($conn) {
    $sql = "SELECT * FROM comments ORDER BY date DESC LIMIT 10";
    $result = mysqli_query($conn, $sql);
    while ($row = mysqli_fetch_array($result)){
        echo "<div class='commentbox'><p>";
            echo $row['uid'];
            echo $row['date']."<br>";
                echo "<div class='thumbnail'>";
                    echo "<img src='".$row['image']."'>";
                echo "</div>";
            echo nl2br($row['message']);
        echo "<p></div>"."<br>";                    
    }

}