Hva er galt med denne koden? file hosting

[kake_fisk]

Jeg bruker denne koden for å lage formene og det:

<form action="upload_file.php" method="post"
enctype="multipart/form-data">
<label for="file">Filename:</label>
<input type="file" name="file" id="file" /> 
<br />
<input type="submit" name="submit" value="Submit" />
</form>

Og detter er php scripten min:

<?php
if ((($_FILES["file"]["type"] == "image/gif")
|| ($_FILES["file"]["type"] == "image/jpeg")
|| ($_FILES["file"]["type"] == "image/pjpeg"))
&& ($_FILES["file"]["size"] < 20000))
 {
 if ($_FILES["file"]["error"] > 0)
{
echo "Return Code: " . $_FILES["file"]["error"] . "<br />";
}
 else
{
echo "Upload: " . $_FILES["file"]["name"] . "<br />";
echo "Type: " . $_FILES["file"]["type"] . "<br />";
echo "Size: " . ($_FILES["file"]["size"] / 1024) . " Kb<br />";
echo "Temp file: " . $_FILES["file"]["tmp_name"] . "<br />";	if (file_exists("upload/" . $_FILES["file"]["name"]))
  {
  echo $_FILES["file"]["name"] . " already exists. ";
  }
else
  {
  move_uploaded_file($_FILES["file"]["tmp_name"],
  "upload/" . $_FILES["file"]["name"]);
  echo "Stored in: " . "upload/" . $_FILES["file"]["name"];
  }
}
 }
else
 {
 echo "Invalid file";
 }
?>

 

Men får denne erroren når jeg laster opp en fil...

Upload: metaltiles.jpg
Type: image/pjpeg
Size: 0.6708984375 Kb
Temp file: /tmp/phpJWiDAj

Warning: move_uploaded_file(upload/metaltiles.jpg) [function.move-uploaded-file]: failed to open stream: No such file or directory in /home/sacredwa/public_html/myphp/upload_file.php on line 23

Warning: move_uploaded_file() [function.move-uploaded-file]: Unable to move '/tmp/phpJWiDAj' to 'upload/metaltiles.jpg' in /home/sacredwa/public_html/myphp/upload_file.php on line 23
Stored in: upload/metaltiles.jpg

[Lokaltog]

http://no.php.net/manual/en/function.move-...-file.php#77661

[kake_fisk]

Okay, takk