File upload mislukt steeds

Hallo,

Ik heb een html form waarbij gebruikers foto's kunnen uploaden. Helaas lukt het uploaden niet, hij komt steeds terug op dat het bestand ongeldig is...

Dit is de handler:

<?php

$allowedExts = array("jpg", "jpeg", "gif", "png");
$extension = end(explode(".", $_FILES["file"]["name"]));
if ((($_FILES["file"]["type"] == "image/gif")
|| ($_FILES["file"]["type"] == "image/jpeg")
|| ($_FILES["file"]["type"] == "image/png")
|| ($_FILES["file"]["type"] == "image/pjpeg"))
&& ($_FILES["file"]["size"] < 20000)
&& in_array($extension, $allowedExts))
{
if ($_FILES["file"]["error"] > 0)
{
echo "Error: " . $_FILES["file"]["error"] . "<br>";
}
else
{

$connection=mysql_connect ('localhost', '***', '***');
if (!$connection) {
die('Not connected : ' . mysql_error());
}


$db_selected = mysql_select_db('***', $connection);
if (!$db_selected) {
die ('Can\'t use db : ' . mysql_error());
}

$file = $_FILES['file'];

$name = $file['name'];

$path = "/home/***/domains/***.nl/public_html/data/fotos/" . basename($name);

if (move_uploaded_file($file['tmp_name'], $path)) {
// Move succeed.
$newpath = preg_replace('#/home/***/domains/***/public_html/artistone/#', 'http://***.nl/', $path);
$sql = "INSERT INTO fotoboek (url, titel, dataid) VALUES ('" . mysql_real_escape_string($newpath) . "', '" . $_POST['titel'] . "', '" . $_POST['dataid'] . "')";
$result = mysql_query($sql);

// echo "Opgeslagen en toegevoegd aan DB.";
header ('location: ../gallery.php?upload=ok');


} else {
// Move failed. Possible duplicate?

echo "ERROR: Dubbele file";
header ('location: ../addphoto.php?error=dubbel');
}
}
}
else
{
header ('location: ../addphoto.php?error=ongeldig');
}
?>

Kan iemand mij vertellen waarom hij t niet doet?