?Er denne kode helt hen i skoven?

Jeg sidder og skal sende et navn på et billede, jeg uploader til min server med ned i min sql-database (billedatabase). Jeg kan ikke finde ud af at placere koden rigtig? Er den i det hele taget korrekt?

Her er bidden..

$query = "INSERT INTO billeddatabase SET billednavn='".$_FILES['userfile']['name']."'";


Resten af koden ser således ud: (Jeg har undladt <form osv.)

<?php
//Connection statement
require_once('Connections/kyndigkaephest.php');
mysql_select_db($database_kyndigkaephest, $kyndigkaephest);

//Aditional Functions
require_once('includes/functions.inc.php');

//vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
// You may change maxsize, and allowable upload file types.
//^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
//Mmaximum file size. You may increase or decrease.
$MAX_SIZE = 100000;

//Allowable file ext. names. you may add more extension names.
$FILE_EXTS = array('.jpg','.gif');

//Allow file delete? no, if only allow upload only
$DELETABLE = true;


//vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
// Do not touch the below if you are not confident.
//^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
/************************************************************
* Setup variables
************************************************************/
$site_name = $_SERVER['HTTP_HOST'];
$url_dir = "http://".$_SERVER['HTTP_HOST'].dirname($_SERVER['PHP_SELF']);
$url_this = "http://".$_SERVER['HTTP_HOST'].$_SERVER['PHP_SELF'];

$upload_dir = "files/";
$upload_url = $url_dir."/files/";
$message ="";

/************************************************************
* Create Upload Directory
************************************************************/
if (!is_dir("files")) {
if (!mkdir($upload_dir))
die ("upload_files directory doesn't exist and creation failed");
if (!chmod($upload_dir,0755))
die ("change permission to 755 failed.");
}

/************************************************************
* Process User's Request
************************************************************/
if ($_REQUEST[del] && $DELETABLE) {
$resource = fopen("log.txt","a");
fwrite($resource,date("Ymd h:i:s")."DELETE - $_SERVER[REMOTE_ADDR]"."$_REQUEST[del]\\n");
fclose($resource);

if (strpos($_REQUEST[del],"/.")>0); //possible hacking
else if (strpos($_REQUEST[del],$upload_dir) === false); //possible hacking
else if (substr($_REQUEST[del],0,6)==$upload_dir) {
unlink($_REQUEST[del]);
print "<script>window.location.href='$url_this?message=deleted successfully'</script>";
}
}
else if ($_FILES['userfile']) {
$resource = fopen("log.txt","a");
fwrite($resource,date("Ymd h:i:s")."UPLOAD - $_SERVER[REMOTE_ADDR]"
.$_FILES['userfile']['name']." "
.$_FILES['userfile']['type']."\\n");
fclose($resource);

$file_type = $_FILES['userfile']['type'];
$file_name = $_FILES['userfile']['name'];
$file_ext = strtolower(substr($file_name,strrpos($file_name,".")));

//File Size Check
if ( $_FILES['userfile']['size'] > $MAX_SIZE)
$message = "The file size is over 1MB.";
//File Extension Check
else if (!in_array($file_ext, $FILE_EXTS))
$message = "Sorry, $file_name($file_type) is not allowed to be uploaded.";
else
$message = do_upload($upload_dir, $upload_url);

print "<script>window.location.href='$url_this?message=$message'</script>";
}
else if (!$_FILES['userfile']);
else
$message = "Invalid File Specified.";

/************************************************************
* List Files
************************************************************/
$handle=opendir($upload_dir);
$filelist = "";
while ($file = readdir($handle)) {
if(!is_dir($file) && !is_link($file)) {
$filelist .= "<a href='$upload_dir$file'>".$file."</a>";
if ($DELETABLE)
$filelist .= " <a href='?del=$upload_dir".urlencode($file)."' title='delete'>x</a>";
$filelist .= "_{<small><small><font color=grey> ".date("d-m H:i", filemtime($upload_dir.$file))
."</font></small></small>}";
$filelist .="<br>";
}
}

function do_upload($upload_dir, $upload_url) {

$temp_name = $_FILES['userfile']['tmp_name'];
$file_name = $_FILES['userfile']['name'];
$file_name = str_replace("\\\\","",$file_name);
$file_name = str_replace("'","",$file_name);
$file_path = $upload_dir.$file_name;

//File Name Check
if ( $file_name =="") {
$message = "Invalid File Name Specified";
return $message;
}

$result = move_uploaded_file($temp_name, $file_path);
if (!chmod($file_path,0777))
$message = "change permission to 777 failed.";
else
$message = ($result)?"$file_name uploaded successfully." :
"Somthing is wrong with uploading a file.";
return $message;
}

?>