Ciao a tutti

Ho un file php già incluso nel pacchetto del forum installato e preposto all'invio di e-mail globali agli utenti iscritti. Come posso fare per aggiungere le variabili per l'invio degli allegati?

Il file è questo:

Codice PHP:
<?php
/**
*
* @package acp
* @version $Id: acp_email.php 8479 2008-03-29 00:22:48Z naderman $
* @copyright (c) 2005 phpBB Group
* @license [url]http://opensource.org/licenses/gpl-license.php[/url] GNU Public License
*
*/

/**
* @ignore
*/
if (!defined('IN_PHPBB'))
{
    exit;
}

/**
* @package acp
*/
class acp_email
{
    var 
$u_action;

    function 
main($id$mode)
    {
        global 
$config$db$user$auth$template$cache;
        global 
$phpbb_root_path$phpbb_admin_path$phpEx$table_prefix;

        
$user->add_lang('acp/email');
        
$this->tpl_name 'acp_email';
        
$this->page_title 'ACP_MASS_EMAIL';

        
$form_key 'acp_email';
        
add_form_key($form_key);

        
// Set some vars
        
$submit = (isset($_POST['submit'])) ? true false;
        
$error = array();

        
$usernames    request_var('usernames'''true);
        
$group_id    request_var('g'0);
        
$subject    utf8_normalize_nfc(request_var('subject'''true));
        
$message    utf8_normalize_nfc(request_var('message'''true));

        
// Do the job ...
        
if ($submit)
        {
            
// Error checking needs to go here ... if no subject and/or no message then skip
            // over the send and return to the form
            
$use_queue        = (isset($_POST['send_immediately'])) ? false true;
            
$priority        request_var('mail_priority_flag'MAIL_NORMAL_PRIORITY);

            if (!
check_form_key($form_key))
            {
                
$error[] = $user->lang['FORM_INVALID'];
            }

            if (!
$subject)
            {
                
$error[] = $user->lang['NO_EMAIL_SUBJECT'];
            }

            if (!
$message)
            {
                
$error[] = $user->lang['NO_EMAIL_MESSAGE'];
            }

            if (!
sizeof($error))
            {
                if (
$usernames)
                {
                    
// If giving usernames the admin is able to email inactive users too...
                    
$sql 'SELECT username, user_email, user_jabber, user_notify_type, user_lang
                        FROM ' 
USERS_TABLE '
                        WHERE ' 
$db->sql_in_set('username_clean'array_map('utf8_clean_string'explode("\n"$usernames))) . '
                            AND user_allow_massemail = 1
                        ORDER BY user_lang, user_notify_type'
// , SUBSTRING(user_email FROM INSTR(user_email, '@'))
                
}
                else
                {
                    if (
$group_id)
                    {
                        
$sql 'SELECT u.user_email, u.username, u.username_clean, u.user_lang, u.user_jabber, u.user_notify_type
                            FROM ' 
USERS_TABLE ' u, ' USER_GROUP_TABLE ' ug
                            WHERE ug.group_id = ' 
$group_id '
                                AND ug.user_pending = 0
                                AND u.user_id = ug.user_id
                                AND u.user_allow_massemail = 1
                                AND u.user_type IN (' 
USER_NORMAL ', ' USER_FOUNDER ')
                            ORDER BY u.user_lang, u.user_notify_type'
;
                    }
                    else
                    {
                        
$sql 'SELECT username, username_clean, user_email, user_jabber, user_notify_type, user_lang
                            FROM ' 
USERS_TABLE '
                            WHERE user_allow_massemail = 1
                                AND user_type IN (' 
USER_NORMAL ', ' USER_FOUNDER ')
                            ORDER BY user_lang, user_notify_type'
;
                    }
                }
                
$result $db->sql_query($sql);
                
$row $db->sql_fetchrow($result);

                if (!
$row)
                {
                    
$db->sql_freeresult($result);
                    
trigger_error($user->lang['NO_USER'] . adm_back_link($this->u_action), E_USER_WARNING);
                }
    
                
$i $j 0;

                
// Send with BCC, no more than 50 recipients for one mail (to not exceed the limit)
                
$max_chunk_size 50;
                
$email_list = array();
                
$old_lang $row['user_lang'];
                
$old_notify_type $row['user_notify_type'];

                do
                {
                    if ((
$row['user_notify_type'] == NOTIFY_EMAIL && $row['user_email']) ||
                        (
$row['user_notify_type'] == NOTIFY_IM && $row['user_jabber']) ||
                        (
$row['user_notify_type'] == NOTIFY_BOTH && $row['user_email'] && $row['user_jabber']))
                    {
                        if (
$i == $max_chunk_size || $row['user_lang'] != $old_lang || $row['user_notify_type'] != $old_notify_type)
                        {
                            
$i 0;

                            if (
sizeof($email_list))
                            {
                                
$j++;
                            }

                            
$old_lang $row['user_lang'];
                            
$old_notify_type $row['user_notify_type'];
                        }

                        
$email_list[$j][$i]['lang']        = $row['user_lang'];
                        
$email_list[$j][$i]['method']    = $row['user_notify_type'];
                        
$email_list[$j][$i]['email']    = $row['user_email'];
                        
$email_list[$j][$i]['name']        = $row['username'];
                        
$email_list[$j][$i]['jabber']    = $row['user_jabber'];
                        
$i++;
                    }
                }
                while (
$row $db->sql_fetchrow($result));
                
$db->sql_freeresult($result);

                
// Send the messages
                
include_once($phpbb_root_path 'includes/functions_messenger.' $phpEx);
                include_once(
$phpbb_root_path 'includes/functions_user.' $phpEx);
                
$messenger = new messenger($use_queue);

                
$errored false;

                for (
$i 0$size sizeof($email_list); $i $size$i++)
                {
                    
$used_lang $email_list[$i][0]['lang'];
                    
$used_method $email_list[$i][0]['method'];

                    for (
$j 0$list_size sizeof($email_list[$i]); $j $list_size$j++)
                    {
                        
$email_row $email_list[$i][$j];

                        
$messenger->{((sizeof($email_list[$i]) == 1) ? 'to' 'bcc')}($email_row['email'], $email_row['name']);
                        
$messenger->im($email_row['jabber'], $email_row['name']);
                    }

                    
$messenger->template('admin_send_email'$used_lang);

                    
$messenger->headers('X-AntiAbuse: Board servername - ' $config['server_name']);
                    
$messenger->headers('X-AntiAbuse: User_id - ' $user->data['user_id']);
                    
$messenger->headers('X-AntiAbuse: Username - ' $user->data['username']);
                    
$messenger->headers('X-AntiAbuse: User IP - ' $user->ip);
            
                    
$messenger->subject(htmlspecialchars_decode($subject));
                    
$messenger->set_mail_priority($priority);

                    
$messenger->assign_vars(array(
                        
'CONTACT_EMAIL' => $config['board_contact'],
                        
'MESSAGE'        => htmlspecialchars_decode($message))
                    );
    
                    if (!(
$messenger->send($used_method)))
                    {
                        
$errored true;
                    }
                }
                unset(
$email_list);

                
$messenger->save_queue();

                if (
$usernames)
                {
                    
$usernames explode("\n"$usernames);
                    
add_log('admin''LOG_MASS_EMAIL'implode(', 'utf8_normalize_nfc($usernames)));
                }
                else
                {
                    if (
$group_id)
                    {
                        
$group_name get_group_name($group_id);
                    }
                    else
                    {
                        
// Not great but the logging routine doesn't cope well with localising on the fly
                        
$group_name $user->lang['ALL_USERS'];
                    }

                    
add_log('admin''LOG_MASS_EMAIL'$group_name);
                }

                if (!
$errored)
                {
                    
$message = ($use_queue) ? $user->lang['EMAIL_SENT_QUEUE'] : $user->lang['EMAIL_SENT'];
                    
trigger_error($message adm_back_link($this->u_action));
                }
                else
                {
                    
$message sprintf($user->lang['EMAIL_SEND_ERROR'], '[url="' append_sid("]', '[/url]');
                    trigger_error(
$message . adm_back_link($this->u_action), E_USER_WARNING);
                }
            }
        }

        // Exclude bots and guests...
        
$sql = 'SELECT group_id
            FROM ' . GROUPS_TABLE . "
            
WHERE group_name IN ('BOTS''GUESTS')";
        
$result = $db->sql_query($sql);

        
$exclude = array();
        while (
$row = $db->sql_fetchrow($result))
        {
            
$exclude[] = $row['group_id'];
        }
        
$db->sql_freeresult($result);

        
$select_list = '<option value="0"' . ((!$group_id) ? ' selected="selected"' : '') . '>' . $user->lang['ALL_USERS'] . '</option>';
        
$select_list .= group_select_options($group_id$exclude);
        
        
$s_priority_options = '<option value="' . MAIL_LOW_PRIORITY . '">' . $user->lang['MAIL_LOW_PRIORITY'] . '</option>';
        
$s_priority_options .= '<option value="' . MAIL_NORMAL_PRIORITY . '" selected="selected">' . $user->lang['MAIL_NORMAL_PRIORITY'] . '</option>';
        
$s_priority_options .= '<option value="' . MAIL_HIGH_PRIORITY . '">' . $user->lang['MAIL_HIGH_PRIORITY'] . '</option>';

        
$template->assign_vars(array(
            'S_WARNING'                => (sizeof(
$error)) ? true : false,
            'WARNING_MSG'            => (sizeof(
$error)) ? implode('
', 
$error) : '',
            'U_ACTION'                => 
$this->u_action,
            'S_GROUP_OPTIONS'        => 
$select_list,
            'USERNAMES'                => 
$usernames,
            'U_FIND_USERNAME'        => append_sid("
{$phpbb_root_path}memberlist.$phpEx", 'mode=searchuser&amp;form=acp_email&amp;field=usernames'),
            'SUBJECT'                => 
$subject,
            'MESSAGE'                => 
$message,
            'S_PRIORITY_OPTIONS'    => 
$s_priority_options)
        );

    }
}

?>
Ne capisco poco di php, però se ho capito bene, le variabili per l'invio degli allegati dovrebbero essere aggiunte in un secondo file, cioè nel functions_messenger.php che poi è quello che il form utilizza per mandare i dati (compreso il corpo della mail) ai destinatari.

Consigli?