Best way to update images using PHP / MySQL?

Question

HI
I want to update images using PHP/MySQL, so users can update their images and maybe some other files but mainly images.
thanks

Answer 1

How messed up is this code?!
<?php
//connect to database
$con = mysql_connect("testhost","testuser","pass");
// file properies
$file = $_FILES['image']['tmp_name'];
if (!isset($file))
echo "please select an image";
else {
    $id = $_REQUEST['id_display'];
    $image = ($_FILES['image']['tmp_name']) ? file_get_contents ($_FILES['image']['tmp_name']) : '';
    $image_name = ($_FILES['image']['name']) ? addslashes($_FILES['image']['name']): '';
    $image_size = ($_FILES['image']['tmp_name']) ? getimagesize($_FILES['image']['tmp_name']): '';
    if ($image_size == FALSE)
    echo "You have not selected an image.";
    else {
        mysql_select_db("test_display", $con);
        mysql_query("UPDATE testtable SET image = '$image', imagename = '$image_name' WHERE id_display='$id'");
?>
And the upload page....
/*Update code */ /*End update code */