File upload funktioniert nicht mehr nach umstieg auf php5 :( Kann jemand helfen?

function formatFilesize($byte) {
    $string = "Byte";
    if($byte>1024) {
        $byte/=1024;
        $string="KB";
    }
    if($byte>1024) {
        $byte/=1024;
        $string="MB";
    }
    if($byte>1024) {
        $byte/=1024;
        $string="GB";
    }
    if(number_format($byte,0)!=$byte) $byte=number_format($byte,2);
    return $byte." ".$string;
}


if (isset($_POST['Button'])) {
    $success = 1;
    if ($_FILES['sw_file']['name'] != '' AND !empty($_POST['sw_wget'])) {
        set_page_message(tr('You have to choose between file-upload and wget-function.'));
        $success = 0;
    } elseif ($_FILES['sw_file']['name'] == '' AND empty($_POST['sw_wget'])) {
        set_page_message(tr('You must select a file to upload/download.'));
        $success = 0;
    } else {
        if ($_FILES['sw_file']['name'] && $_FILES['sw_file']['name'] != "none") {
            if (substr($_FILES['sw_file']['name'], -7) != '.tar.gz') {
                set_page_message(tr('File needs to be a .tar.gz-archive'));
                $success = 0;
            }
            $file = 0;
        } else {
            if (substr($_POST['sw_wget'], -7) != '.tar.gz') {
                set_page_message(tr('File needs to be a .tar.gz-archive'));
                $success = 0;
            }
            $file = 1;
        }
    }
    if ($success == 1) {
        $user_id = $_SESSION['user_id'];
        $upload = 1;
        if($file == 0) {
            $fname = $_FILES['sw_file']['name'];
        } elseif($file == 1) {
            $fname = substr($_POST['sw_wget'], (strrpos($_POST['sw_wget'], '/')+1));
        }
        $filename = substr($fname, 0, -7);
        $extension = substr($fname, -7);
            $query="
                INSERT INTO
                    `web_software`
                (
                    `reseller_id`, `software_name`, `software_version`, `software_language`, `software_type`, `software_db`, `software_archive`, 
                    `software_installfile`, `software_prefix`, `software_link`, `software_desc`, `software_active`, `software_status`, `software_depot`
                ) VALUES (
                    ?, ?, ?, ?, ?, ?, ?,
                    ?, ?, ?, ?, ?, ?, ?
                )
                ";
        $rs = exec_query($sql, $query, array($user_id, "waiting_for_input", "waiting_for_input", "waiting_for_input", "waiting_for_input", "0", $filename, "waiting_for_input", "waiting_for_input", "waiting_for_input", "waiting_for_input", "1", "toadd", "yes"));
        $sw_id = $sql->Insert_ID();
        if ($file == 0) {
            $dest_dir = $cfg->GUI_SOFTWARE_DEPOT_DIR.'/'.$filename.'-'.$sw_id.$extension;
            if (!is_dir($cfg->GUI_SOFTWARE_DEPOT_DIR)) {
                @mkdir($cfg->GUI_SOFTWARE_DEPOT_DIR,0755,true);
            }
            if (!move_uploaded_file($_FILES['sw_file']['tmp_name'], $dest_dir)) {
                // Delete software entry
                $query = "DELETE FROM `web_software` WHERE `software_id` = ?";
                exec_query($sql, $query, array($sw_id));
                $sw_wget = "";
                set_page_message(tr('ERROR: Could not upload file. Max. upload filesize (%1$d MB) reached?', ini_get('upload_max_filesize')));
                $upload = 0;
            }
        }
        if ($file == 1) {
            $sw_wget = $_POST['sw_wget'];
            $dest_dir = $cfg->GUI_SOFTWARE_DEPOT_DIR.'/'.$filename.'-'.$sw_id.$extension;
            // Reading filesize
               $parts = parse_url($sw_wget);
               $connection = fsockopen($parts['host'],80,$errno,$errstr,30);
               if($connection) {
                   fputs($connection,"GET ".$sw_wget." HTTP/1.1\r\nHost: ".$parts['host']."\r\n\r\n");
                   $size = 0;
                   while(!isset($length) || ($size <= 500 && !feof($connection))) {
                       $tstr = fgets($connection,128);
                       $size += strlen($tstr);
                       if(substr($tstr,0,14) == 'Content-Length') {
                           $length = substr($tstr,15);
                       }
                   }
                   if($length) {
                    $remote_file_size = $length;
                } else {
                    $remote_file_size = 0;
                }
                $show_remote_file_size = formatFilesize($remote_file_size);
                if($remote_file_size < 1){
                    // Delete software entry
                    $query = "DELETE FROM `web_software` WHERE `software_id` = ?";
                    exec_query($sql, $query, array($sw_id));
                    $show_max_remote_filesize = formatFilesize($cfg->MAX_REMOTE_FILESIZE);
                    set_page_message(tr('ERROR: Your remote filesize (%1$d B) is lower than 1 Byte. Please check your URL!', $show_remote_file_size));
                    $upload = 0;
                } elseif($remote_file_size > $cfg->MAX_REMOTE_FILESIZE) {
                    // Delete software entry
                    $query = "DELETE FROM `web_software` WHERE `software_id` = ?";
                    exec_query($sql, $query, array($sw_id));
                    $show_max_remote_filesize = formatFilesize($cfg->MAX_REMOTE_FILESIZE);
                    set_page_message(tr('ERROR: Max. remote filesize (%1$d MB) is reached. Your remote file ist %2$d MB', $show_max_remote_filesize, $show_remote_file_size));
                    $upload = 0;
                } else {
                    $remote_file = @file_get_contents($sw_wget);
                    if($remote_file) {
                        $output_file = fopen($dest_dir,'w+');
                        fwrite($output_file,$remote_file);
                        fclose($output_file);
                    } else {
                        // Delete software entry
                        $query = "DELETE FROM `web_software` WHERE `software_id` = ?";
                        exec_query($sql, $query, array($sw_id));
                        set_page_message(tr('ERROR: Remote File not found!'));
                        $upload = 0;
                    }
                }
               }else{
                // Delete software entry
                $query = "DELETE FROM `web_software` WHERE `software_id` = ?";
                exec_query($sql, $query, array($sw_id));
                set_page_message(tr('ERROR: Could not upload file. File not found!'));
                $upload = 0;
            }
        }
        if ($upload == 1) {
            $tpl->assign(
                    array(
                        'VAL_WGET' => ''
                    )
                );
            send_request();
            set_page_message(tr('File was successfully uploaded.'));    
        } else {
            $tpl->assign(
                    array(
                        'VAL_WGET' => $sw_wget
                    )
                );
        }
    } else {
        $tpl->assign(
                array(
                    'VAL_WGET' => $_POST['sw_wget']
                )
            );


    }
} else {
    $tpl->assign(
            array(
                'VAL_WGET' => ''
            )
        );
}


// Begin function block
function get_avail_software (&$tpl, &$sql) {
    $query="
        SELECT
            a.`software_id` as id,
            a.`software_name` as name,
            a.`software_version` as version,
            a.`software_language` as language,
            a.`software_type` as type,
            a.`software_desc` as description,
            a.`reseller_id`,
            b.`admin_id`,
            b.`admin_name` as reseller
        FROM
            `web_software` a,
            `admin` b
        WHERE
            a.`software_active` = 0
        AND
            a.`reseller_id` = b.`admin_id`
        AND
            a.software_depot = 'no'
        ORDER BY
            a.`reseller_id` ASC,
            a.`software_type` ASC,
            a.`software_name` ASC
        ";
    $rs = exec_query($sql, $query, array());
    if ($rs->RecordCount() > 0) {
        while(!$rs->EOF) {
            $import_url = "software_import.php?id=".$rs->fields['id'];
            $act_url = "software_activate.php?id=".$rs->fields['id'];
            $del_url = "software_delete.php?id=".$rs->fields['id'];
            $dow_url = "software_download.php?id=".$rs->fields['id'];
            $tpl->assign(
                    array(
                        'TR_NAME' => $rs->fields['name'],
                        'TR_TOOLTIP' => $rs->fields['description'],
                        'TR_VERSION' => $rs->fields['version'],
                        'TR_LANGUAGE' => $rs->fields['language'],
                        'TR_TYPE' => $rs->fields['type'],
                        'TR_RESELLER' => $rs->fields['reseller'],
                        'DOWNLOAD_LINK' => $dow_url,
                        'TR_DOWNLOAD' => tr('Download'),
                        'ACTIVATE_LINK' => $act_url,
                        'IMPORT_LINK' => $import_url,
                        'TR_ACTIVATION' => tr('Activate'),
                        'TR_IMPORT' => tr('Import'),
                        'DELETE_LINK' => $del_url,
                        'TR_DELETE' => tr('Delete'),
                        )
                    );
            $tpl->parse('LIST_SOFTWARE', '.list_software');
            $rs->MoveNext();
        }
        $tpl->assign('NO_SOFTWARE_LIST', '');
    } else {
        $tpl->assign(
                array(
                    'NO_SOFTWARE' => tr('No software is waiting for activation')
                    )
                );
        $tpl->parse('NO_SOFTWARE_LIST', '.no_software_list');
        $tpl->assign('LIST_SOFTWARE', '');
    }
    return $rs->RecordCount();
}
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