SWFUpload

Hey there!
I'm using the resize image demo and try to upload the photo's created to my server. Great app but I'm stuck at some things.

I'm using this upload script:
(sorry but attachment browse didn't work)
<?php

// Code for Session Cookie workaround
if (isset($_POST["PHPSESSID"])) {
session_id($_POST["PHPSESSID"]);
} else if (isset($_GET["PHPSESSID"])) {
session_id($_GET["PHPSESSID"]);
}

session_start();

// Check the upload
if (!isset($_FILES["Filedata"]) || !is_uploaded_file($_FILES["Filedata"]["tmp_name"]) || $_FILES["Filedata"]["error"] != 0) {
header("HTTP/1.1 500 Internal Server Error");
echo "invalid upload";
exit(0);
}

$POST_MAX_SIZE = ini_get('post_max_size');
$unit = strtoupper(substr($POST_MAX_SIZE, -1));
$multiplier = ($unit == 'M' ? 1048576 : ($unit == 'K' ? 1024 : ($unit == 'G' ? 1073741824 : 1)));

if ((int)$_SERVER['CONTENT_LENGTH'] > $multiplier*(int)$POST_MAX_SIZE && $POST_MAX_SIZE) {
header("HTTP/1.1 500 Internal Server Error"); // This will trigger an uploadError event in SWFUpload
echo "POST exceeded maximum allowed size.";
exit(0);
}

// Settings
$save_path = "../fotos/"; // The path were we will save the file (getcwd() may not be reliable and should be tested in your environment)
$upload_name = "Filedata";
$max_file_size_in_bytes = 2147483647; // 2GB in bytes
$extension_whitelist = array("jpg", "gif", "png"); // Allowed file extensions
$valid_chars_regex = '.A-Z0-9_ !@#$%^&()+={}\[\]\',~`-'; // Characters allowed in the file name (in a Regular Expression format)

// Other variables
$MAX_FILENAME_LENGTH = 260;
$file_name = "";
$file_extension = "";
$uploadErrors = array(
0=>"There is no error, the file uploaded with success",
1=>"The uploaded file exceeds the upload_max_filesize directive in php.ini",
2=>"The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form",
3=>"The uploaded file was only partially uploaded",
4=>"No file was uploaded",
6=>"Missing a temporary folder"
);

// Validate the upload
if (!isset($_FILES[$upload_name])) {
HandleError("No upload found in \$_FILES for " . $upload_name);
exit(0);
} else if (isset($_FILES[$upload_name]["error"]) && $_FILES[$upload_name]["error"] != 0) {
HandleError($uploadErrors[$_FILES[$upload_name]["error"]]);
exit(0);
} else if (!isset($_FILES[$upload_name]["tmp_name"]) || !@is_uploaded_file($_FILES[$upload_name]["tmp_name"])) {
HandleError("Upload failed is_uploaded_file test.");
exit(0);
} else if (!isset($_FILES[$upload_name]['name'])) {
HandleError("File has no name.");
exit(0);
}

// Validate the file size (Warning: the largest files supported by this code is 2GB)
$file_size = @filesize($_FILES[$upload_name]["tmp_name"]);
if (!$file_size || $file_size > $max_file_size_in_bytes) {
HandleError("File exceeds the maximum allowed size");
exit(0);
}

if ($file_size <= 0) {
HandleError("File size outside allowed lower bound");
exit(0);
}

// Validate file name (for our purposes we'll just remove invalid characters)
$file_name = preg_replace('/[^'.$valid_chars_regex.']|\.+$/i', "", basename($_FILES[$upload_name]['name']));
if (strlen($file_name) == 0 || strlen($file_name) > $MAX_FILENAME_LENGTH) {
HandleError("Invalid file name");
exit(0);
}

// Validate that we won't over-write an existing file
if (file_exists($save_path . $file_name)) {
HandleError("File with this name already exists");
exit(0);
}

// Validate file extension
$path_info = pathinfo($_FILES[$upload_name]['name']);
$file_extension = $path_info["extension"];
$is_valid_extension = false;
foreach ($extension_whitelist as $extension) {
if (strcasecmp($file_extension, $extension) == 0) {
$is_valid_extension = true;
break;
}
}
if (!$is_valid_extension) {
HandleError("Invalid file extension");
exit(0);
}

// Process the file

if (!@move_uploaded_file($_FILES[$upload_name]["tmp_name"], $save_path.$file_name)) {
if (!@copy($_FILES[$upload_name]["tmp_name"], $save_path.$file_name)) {

HandleError("Could not upload image");

exit(0);
}

function HandleError($message) {
echo $message;
}

// Get the image and create a thumbnail
$img = imagecreatefromjpeg($_FILES[$upload_name]['tmp_name']);
if (!$img) {
echo "ERROR:could not create image handle ". $_FILES[$upload_name]['tmp_name'];
exit(0);
}

$width = imageSX($img);
$height = imageSY($img);

if (!$width || !$height) {
echo "ERROR:Invalid width or height";
exit(0);
}

// Build the thumbnail
$target_width = 100;
$target_height = 100;
$target_ratio = $target_width / $target_height;

$img_ratio = $width / $height;

if ($target_ratio > $img_ratio) {
$new_height = $target_height;
$new_width = $img_ratio * $target_height;
} else {
$new_height = $target_width / $img_ratio;
$new_width = $target_width;
}

if ($new_height > $target_height) {
$new_height = $target_height;
}
if ($new_width > $target_width) {
$new_height = $target_width;
}

$new_img = ImageCreateTrueColor(100, 100);
if (!@imagefilledrectangle($new_img, 0, 0, $target_width-1, $target_height-1, 0)) { // Fill the image black
echo "ERROR:Could not fill new image";
exit(0);
}

if (!@imagecopyresampled($new_img, $img, ($target_width-$new_width)/2, ($target_height-$new_height)/2, 0, 0, $new_width, $new_height, $width, $height)) {
echo "ERROR:Could not resize image";
exit(0);
}

if (!isset($_SESSION["file_info"])) {
$_SESSION["file_info"] = array();
}

// Use a output buffering to load the image into a variable
ob_start();
imagejpeg($new_img);
$imagevariable = ob_get_contents();
ob_end_clean();

$file_id = md5($_FILES["Filedata"]["tmp_name"] + rand()*100000);

$_SESSION["file_info"][$file_id] = $imagevariable;

echo "FILEID:" .$file_id; // Return the file id to the script
?>
///////// END

And I've removed -> "addImage("thumbnail.php?id=" + serverData.substring(7));" from this function in handler.js

function uploadSuccess(file, serverData) {
try {
var progress = new FileProgress(file, this.customSettings.upload_target);

if (serverData.substring(0, 7) === "FILEID:") {

progress.setStatus("Thumbnail Created.");
progress.toggleCancel(false);
} else {
addImage("images/error.gif");
progress.setStatus("Error.");
progress.toggleCancel(false);
alert(serverData);

}

} catch (ex) {
this.debug(ex);
}
}

Can someone please help me fixing this error and help me upload to my server?

Thanks in advance!