swfupload destroy session? php - php

Question

hy, i need a little help here:
i use SWFupload to upload images!
in the upload function i make a folder call $_SESSION['folder'] and all the files i upload are in 1 array call $_SESSION['files'] after uploads finish i print_r($_SESSION) but the array is empty? why that?
this is my upload.php:
if($_FILES['image']['name']) {
list($name,$error) = upload('image','jpeg,jpg,png');
if($error) {$result = $error;}
if($name) { // Upload Successful
$result = watermark($name);
print '<img src="uploads/'.$_SESSION['dir'].'/'.$result.'" />';
} else { // Upload failed for some reason.
print 'noname'.$result;
}
}
function upload($file_id, $types="") {
if(!$_FILES[$file_id]['name']) return array('','No file specified');
$isimage = #getimagesize($_FILES[$file_id]['tmp_name']);
if (!$isimage)return array('','Not jpg');
$file_title = $_FILES[$file_id]['name'];
//Get file extension
$ext_arr = split("\.",basename($file_title));
$ext = strtolower($ext_arr[count($ext_arr)-1]); //Get the last extension
//Not really uniqe - but for all practical reasons, it is
$uniqer = substr(md5(uniqid(rand(),1)),0,10);
//$file_name = $uniqer . '_' . $file_title;//Get Unique Name
//$file_name = $file_title;
$file_name = $uniqer.".".$ext;
$all_types = explode(",",strtolower($types));
if($types) {
if(in_array($ext,$all_types));
else {
$result = "'".$_FILES[$file_id]['name']."' is not a valid file."; //Show error if any.
return array('',$result);
}
}
if((!isset($_SESSION['dir'])) || (!file_exists('uploads/'.$_SESSION['dir']))){
$dirname = date("YmdHis"); // 20010310143223
$pathtodir = $_SERVER['DOCUMENT_ROOT']."/ifunk/uploads/";
$newdir = $pathtodir.$dirname;
if(!mkdir($newdir, 0777)){return array('','cannot create directory');}
$_SESSION['dir'] = $dirname;
}
if(!isset($_SESSION['files'])){$_SESSION['files'] = array();}
//Where the file must be uploaded to
$folder = 'uploads/'.$_SESSION['dir'].'/';
//if($folder) $folder .= '/'; //Add a '/' at the end of the folder
$uploadfile = $folder.$file_name;
$result = '';
//Move the file from the stored location to the new location
if (!move_uploaded_file($_FILES[$file_id]['tmp_name'], $uploadfile)) {
$result = "Cannot upload the file '".$_FILES[$file_id]['name']."'"; //Show error if any.
if(!file_exists($folder)) {
$result .= " : Folder don't exist.";
} elseif(!is_writable($folder)) {
$result .= " : Folder not writable.";
} elseif(!is_writable($uploadfile)) {
$result .= " : File not writable.";
}
$file_name = '';
} else {
if(!$_FILES[$file_id]['size']) { //Check if the file is made
#unlink($uploadfile);//Delete the Empty file
$file_name = '';
$result = "Empty file found - please use a valid file."; //Show the error message
} else {
//$_SESSION['files'] = array();
$_SESSION['files'][] .= $file_name;
chmod($uploadfile,0777);//Make it universally writable.
}
}
return array($file_name,$result);
}

Answer 1

SWFUpload doesn't pass the session ID to the script when you upload, so you have to do this yourself. Simply pass the session ID in a get or post param to the upload script, and then in your application do this before session_start:
if(isset($_REQUEST['PHPSESSID'])) {
session_id($_REQUEST['PHPSESSID']);
}

Answer 2

you must pass the session ID to the upload file used by swfupload.
more details here