Defined (1)

The class is defined in the following location(s).

/classes/class-s2-core.php  

class s2class { 
// variables and constructor are declared at the end 
    /** 
    Load translations 
    */ 
    function load_translations() { 
        load_plugin_textdomain('subscribe2', false, S2DIR); 
        load_plugin_textdomain('subscribe2', false, S2DIR . "languages/"); 
        $mofile = WP_LANG_DIR . '/subscribe2-' . apply_filters('plugin_locale', get_locale(), 'subscribe2') . '.mo'; 
        load_textdomain('subscribe2', $mofile); 
    } // end load_translations() 
 
    /** 
    Load all our strings 
    */ 
    function load_strings() { 
        // adjust the output of Subscribe2 here 
 
        $this->please_log_in = "<p class=\"s2_message\">" . sprintf(__('To manage your subscription options please <a href="%1$s">login.</a>', 'subscribe2'), get_option('siteurl') . '/wp-login.php') . "</p>"; 
 
        $this->profile = "<p class=\"s2_message\">" . sprintf(__('You may manage your subscription options from your <a href="%1$s">profile</a>', 'subscribe2'), get_option('siteurl') . "/wp-admin/admin.php?page=s2") . "</p>"; 
        if ( $this->s2_mu === true ) { 
            global $blog_id; 
            $user_ID = get_current_user_id(); 
            if ( !is_user_member_of_blog($user_ID, $blog_id) ) { 
                // if we are on multisite and the user is not a member of this blog change the link 
                $this->profile = "<p class=\"s2_message\">" . sprintf(__('<a href="%1$s">Subscribe</a> to email notifications when this blog posts new content.', 'subscribe2'), get_option('siteurl') . "/wp-admin/?s2mu_subscribe=" . $blog_id) . "</p>"; 
            } 
        } 
 
        $this->confirmation_sent = "<p class=\"s2_message\">" . __('A confirmation message is on its way!', 'subscribe2') . "</p>"; 
 
        $this->already_subscribed = "<p class=\"s2_error\">" . __('That email address is already subscribed.', 'subscribe2') . "</p>"; 
 
        $this->not_subscribed = "<p class=\"s2_error\">" . __('That email address is not subscribed.', 'subscribe2') . "</p>"; 
 
        $this->not_an_email = "<p class=\"s2_error\">" . __('Sorry, but that does not look like an email address to me.', 'subscribe2') . "</p>"; 
 
        $this->barred_domain = "<p class=\"s2_error\">" . __('Sorry, email addresses at that domain are currently barred due to spam, please use an alternative email address.', 'subscribe2') . "</p>"; 
 
        $this->error = "<p class=\"s2_error\">" . __('Sorry, there seems to be an error on the server. Please try again later.', 'subscribe2') . "</p>"; 
 
        $this->no_page = __('You must create a WordPress page for this plugin to work correctly.', 'subscribe2'); 
 
        $this->mail_sent = "<p class=\"s2_message\">" . __('Message sent!', 'subscribe2') . "</p>"; 
 
        $this->mail_failed = "<p class=\"s2_error\">" . __('Message failed!', 'subscribe2') . "</p>"; 
 
        // confirmation messages 
        $this->no_such_email = "<p class=\"s2_error\">" . __('No such email address is registered.', 'subscribe2') . "</p>"; 
 
        $this->added = "<p class=\"s2_message\">" . __('You have successfully subscribed!', 'subscribe2') . "</p>"; 
 
        $this->deleted = "<p class=\"s2_message\">" . __('You have successfully unsubscribed.', 'subscribe2') . "</p>"; 
 
        $this->subscribe = __('subscribe', 'subscribe2'); //ACTION replacement in subscribing confirmation email 
 
        $this->unsubscribe = __('unsubscribe', 'subscribe2'); //ACTION replacement in unsubscribing in confirmation email 
 
        // menu strings 
        $this->options_saved = __('Options saved!', 'subscribe2'); 
        $this->options_reset = __('Options reset!', 'subscribe2'); 
    } // end load_strings() 
 
/** ===== Install, upgrade, reset ===== */ 
    /** 
    Install our table 
    */ 
    function install() { 
        // load our translations and strings 
        $this->load_translations(); 
 
        // include upgrade-functions for maybe_create_table; 
        if ( !function_exists('maybe_create_table') ) { 
            require_once(ABSPATH . 'wp-admin/install-helper.php'); 
        } 
        $date = date('Y-m-d'); 
        $sql = "CREATE TABLE $this->public ( 
            id int(11) NOT NULL auto_increment,  
            email varchar(64) NOT NULL default '',  
            active tinyint(1) default 0,  
            date DATE default '$date' NOT NULL,  
            time TIME DEFAULT '00:00:00' NOT NULL,  
            ip char(64) NOT NULL default 'admin',  
            conf_date DATE,  
            conf_time TIME,  
            conf_ip char(64),  
            PRIMARY KEY (id) )"; 
 
        // create the table, as needed 
        maybe_create_table($this->public, $sql); 
 
        // create table entries for registered users 
        $users = $this->get_all_registered('ID'); 
        if ( !empty($users) ) { 
            foreach ( $users as $user_ID ) { 
                $check_format = get_user_meta($user_ID, $this->get_usermeta_keyname('s2_format'), true); 
                if ( empty($check_format) ) { 
                    // no prior settings so create them 
                    $this->register($user_ID); 
                } 
            } 
        } 
 
        // safety check if options exist and if not create them 
        if ( !is_array($this->subscribe2_options) ) { 
            $this->reset(); 
        } 
    } // end install() 
 
    /** 
    Upgrade function for the database and settings 
    */ 
    function upgrade() { 
        // load our translations and strings 
        $this->load_translations(); 
 
        require(S2PATH . "classes/class-s2-upgrade.php"); 
        global $s2_upgrade; 
        $s2_upgrade = new s2class_upgrade; 
 
        // ensure that the options are in the database 
        require(S2PATH . "include/options.php"); 
        // catch older versions that didn't use serialised options 
        if ( !isset($this->subscribe2_options['version']) ) { 
            $this->subscribe2_options['version'] = '2.0'; 
        } 
 
        // let's take the time to ensure that database entries exist for all registered users 
        $s2_upgrade->upgrade_core(); 
        if ( version_compare($this->subscribe2_options['version'], '2.3', '<') ) { 
            $s2_upgrade->upgrade23(); 
            $this->subscribe2_options['version'] = '2.3'; 
            update_option('subscribe2_options', $this->subscribe2_options); 
        } 
        if ( version_compare($this->subscribe2_options['version'], '5.1', '<') ) { 
            $s2_upgrade->upgrade51(); 
            $this->subscribe2_options['version'] = '5.1'; 
            update_option('subscribe2_options', $this->subscribe2_options); 
        } 
        if ( version_compare($this->subscribe2_options['version'], '5.6', '<') ) { 
            $s2_upgrade->upgrade56(); 
            $this->subscribe2_options['version'] = '5.6'; 
            update_option('subscribe2_options', $this->subscribe2_options); 
        } 
        if ( version_compare($this->subscribe2_options['version'], '5.9', '<') ) { 
            $s2_upgrade->upgrade59(); 
            $this->subscribe2_options['version'] = '5.9'; 
            update_option('subscribe2_options', $this->subscribe2_options); 
        } 
        if ( version_compare($this->subscribe2_options['version'], '6.4', '<') ) { 
            $s2_upgrade->upgrade64(); 
            $this->subscribe2_options['version'] = '6.4'; 
            update_option('subscribe2_options', $this->subscribe2_options); 
        } 
        if ( version_compare($this->subscribe2_options['version'], '7.0', '<') ) { 
            $s2_upgrade->upgrade70(); 
            $this->subscribe2_options['version'] = '7.0'; 
            update_option('subscribe2_options', $this->subscribe2_options); 
        } 
        if ( version_compare($this->subscribe2_options['version'], '8.5', '<') ) { 
            $s2_upgrade->upgrade85(); 
            $this->subscribe2_options['version'] = '8.5'; 
            update_option('subscribe2_options', $this->subscribe2_options); 
        } 
        if ( version_compare($this->subscribe2_options['version'], '8.6', '<') ) { 
            $s2_upgrade->upgrade86(); 
            $this->subscribe2_options['version'] = '8.6'; 
            update_option('subscribe2_options', $this->subscribe2_options); 
        } 
        if ( version_compare($this->subscribe2_options['version'], '8.8', '<') ) { 
            $s2_upgrade->upgrade88(); 
            $this->subscribe2_options['version'] = '8.8'; 
            update_option('subscribe2_options', $this->subscribe2_options); 
        } 
 
        $this->subscribe2_options['version'] = S2VERSION; 
        update_option('subscribe2_options', $this->subscribe2_options); 
 
        return; 
    } // end upgrade() 
 
    /** 
    Reset our options 
    */ 
    function reset() { 
        // load our translations and strings 
        $this->load_translations(); 
 
        delete_option('subscribe2_options'); 
        wp_clear_scheduled_hook('s2_digest_cron'); 
        unset($this->subscribe2_options); 
        require(S2PATH . "include/options.php"); 
        $this->subscribe2_options['version'] = S2VERSION; 
        update_option('subscribe2_options', $this->subscribe2_options); 
    } // end reset() 
 
/** ===== mail handling ===== */ 
    /** 
    Performs string substitutions for subscribe2 mail tags 
    */ 
    function substitute($string = '') { 
        if ( '' == $string ) { 
            return; 
        } 
        $string = str_replace("{BLOGNAME}", html_entity_decode(get_option('blogname'), ENT_QUOTES), $string); 
        $string = str_replace("{BLOGLINK}", get_option('home'), $string); 
        $string = str_replace("{TITLE}", stripslashes($this->post_title), $string); 
        $link = "<a href=\"" . $this->get_tracking_link($this->permalink) . "\">" . $this->get_tracking_link($this->permalink) . "</a>"; 
        $string = str_replace("{PERMALINK}", $link, $string); 
        if ( strstr($string, "{TINYLINK}") ) { 
            $tinylink = file_get_contents('http://tinyurl.com/api-create.php?url=' . urlencode($this->get_tracking_link($this->permalink))); 
            if ( $tinylink !== 'Error' && $tinylink != false ) { 
                $tlink = "<a href=\"" . $tinylink . "\">" . $tinylink . "</a>"; 
                $string = str_replace("{TINYLINK}", $tlink, $string); 
            } else { 
                $string = str_replace("{TINYLINK}", $link, $string); 
            } 
        } 
        $string = str_replace("{DATE}", $this->post_date, $string); 
        $string = str_replace("{TIME}", $this->post_time, $string); 
        $string = str_replace("{MYNAME}", stripslashes($this->myname), $string); 
        $string = str_replace("{EMAIL}", $this->myemail, $string); 
        $string = str_replace("{AUTHORNAME}", stripslashes($this->authorname), $string); 
        $string = str_replace("{CATS}", $this->post_cat_names, $string); 
        $string = str_replace("{TAGS}", $this->post_tag_names, $string); 
        $string = str_replace("{COUNT}", $this->post_count, $string); 
 
        return $string; 
    } // end substitute() 
 
    /** 
    Delivers email to recipients in HTML or plaintext 
    */ 
    function mail($recipients = array(), $subject = '', $message = '', $type = 'text', $attachments = array()) { 
        if ( empty($recipients) || '' == $message ) { return; } 
 
        // Replace any escaped html symbols in subject then apply filter 
        $subject = strip_tags(html_entity_decode($subject, ENT_QUOTES)); 
        $subject = apply_filters('s2_email_subject', $subject); 
 
        if ( 'html' == $type ) { 
            $headers = $this->headers('html', $attachments); 
            if ( 'yes' == $this->subscribe2_options['stylesheet'] ) { 
                $mailtext = apply_filters('s2_html_email', "<html><head><title>" . $subject . "</title><link rel=\"stylesheet\" href=\"" . get_stylesheet_uri() . "\" type=\"text/css\" media=\"screen\" /></head><body>" . $message . "</body></html>", $subject, $message); 
            } else { 
                $mailtext = apply_filters('s2_html_email', "<html><head><title>" . $subject . "</title></head><body>" . $message . "</body></html>", $subject, $message); 
            } 
        } else { 
            $headers = $this->headers('text', $attachments); 
            $message = preg_replace('|&[^a][^m][^p].{0, 3};|', '', $message); 
            $message = preg_replace('|&|', '&', $message); 
            $message = wordwrap(strip_tags($message), $this->word_wrap, "\n"); 
            $mailtext = apply_filters('s2_plain_email', $message); 
        } 
 
        // Construct BCC headers for sending or send individual emails 
        $bcc = ''; 
        natcasesort($recipients); 
        if ( function_exists('wpmq_mail') || $this->subscribe2_options['bcclimit'] == 1 || count($recipients) == 1 ) { 
            // BCCLimit is 1 so send individual emails or we only have 1 recipient 
            foreach ( $recipients as $recipient ) { 
                $recipient = trim($recipient); 
                // sanity check -- make sure we have a valid email 
                if ( !is_email($recipient) || empty($recipient) ) { continue; } 
                // Use the mail queue provided we are not sending a preview 
                if ( function_exists('wpmq_mail') && !$this->preview_email ) { 
                    @wp_mail($recipient, $subject, $mailtext, $headers, $attachments, 0); 
                } else { 
                    @wp_mail($recipient, $subject, $mailtext, $headers, $attachments); 
                } 
            } 
            return true; 
        } elseif ( $this->subscribe2_options['bcclimit'] == 0 ) { 
            // we're not using BCCLimit 
            foreach ( $recipients as $recipient ) { 
                $recipient = trim($recipient); 
                // sanity check -- make sure we have a valid email 
                if ( !is_email($recipient) ) { continue; } 
                // and NOT the sender's email, since they'll get a copy anyway 
                if ( !empty($recipient) && $this->myemail != $recipient ) { 
                    ('' == $bcc) ? $bcc = "Bcc: $recipient" : $bcc .= ", $recipient"; 
                    // Bcc Headers now constructed by phpmailer class 
                } 
            } 
            $headers .= "$bcc\n"; 
        } else { 
            // we're using BCCLimit 
            $count = 1; 
            $batch = array(); 
            foreach ( $recipients as $recipient ) { 
                $recipient = trim($recipient); 
                // sanity check -- make sure we have a valid email 
                if ( !is_email($recipient) ) { continue; } 
                // and NOT the sender's email, since they'll get a copy anyway 
                if ( !empty($recipient) && $this->myemail != $recipient ) { 
                    ('' == $bcc) ? $bcc = "Bcc: $recipient" : $bcc .= ", $recipient"; 
                    // Bcc Headers now constructed by phpmailer class 
                } 
                if ( $this->subscribe2_options['bcclimit'] == $count ) { 
                    $count = 0; 
                    $batch[] = $bcc; 
                    $bcc = ''; 
                } 
                $count++; 
            } 
            // add any partially completed batches to our batch array 
            if ( '' != $bcc ) { 
                $batch[] = $bcc; 
            } 
        } 
        // rewind the array, just to be safe 
        reset($recipients); 
 
        // actually send mail 
        if ( isset($batch) && !empty($batch) ) { 
            foreach ( $batch as $bcc ) { 
                    $newheaders = $headers . "$bcc\n"; 
                    $status = @wp_mail($this->myemail, $subject, $mailtext, $newheaders, $attachments); 
            } 
        } else { 
            $status = @wp_mail($this->myemail, $subject, $mailtext, $headers, $attachments); 
        } 
        return $status; 
    } // end mail() 
 
    /** 
    Construct standard set of email headers 
    */ 
    function headers($type = 'text', $attachments = array()) { 
        if ( empty($this->myname) || empty($this->myemail) ) { 
            if ( $this->subscribe2_options['sender'] == 'blogname' ) { 
                $this->myname = html_entity_decode(get_option('blogname'), ENT_QUOTES); 
                $this->myemail = get_option('admin_email'); 
            } else { 
                $admin = $this->get_userdata($this->subscribe2_options['sender']); 
                $this->myname = html_entity_decode($admin->display_name, ENT_QUOTES); 
                $this->myemail = $admin->user_email; 
                // fail safe to ensure sender details are not empty 
                if ( empty($this->myname) ) { 
                    $this->myname = html_entity_decode(get_option('blogname'), ENT_QUOTES); 
                } 
                if ( empty($this->myemail) ) { 
                    // Get the site domain and get rid of www. 
                    $sitename = strtolower( $_SERVER['SERVER_NAME'] ); 
                    if ( substr( $sitename, 0, 4 ) == 'www.' ) { 
                        $sitename = substr( $sitename, 4 ); 
                    } 
                    $this->myemail = 'wordpress@' . $sitename; 
                } 
            } 
        } 
 
        if ( function_exists('mb_encode_mimeheader') ) { 
            $header['From'] = mb_encode_mimeheader($this->myname, 'UTF-8', 'Q') . " <" . $this->myemail . ">"; 
            $header['Reply-To'] = mb_encode_mimeheader($this->myname, 'UTF-8', 'Q') . " <" . $this->myemail . ">"; 
        } else { 
            $header['From'] = $this->myname. " <" . $this->myemail . ">"; 
            $header['Reply-To'] = $this->myname . " <" . $this->myemail . ">"; 
        } 
        $header['Return-path'] = "<" . $this->myemail . ">"; 
        $header['Precedence'] = "list\nList-Id: " . html_entity_decode(get_option('blogname'), ENT_QUOTES) . ""; 
        if ( empty($attachments) && $type == 'html' ) { 
            // To send HTML mail, the Content-Type header must be set 
            $header['Content-Type'] = get_option('html_type') . "; charset=\"". get_option('blog_charset') . "\""; 
        } elseif ( empty($attachments) && $type == 'text' ) { 
            $header['Content-Type'] = "text/plain; charset=\"". get_option('blog_charset') . "\""; 
        } 
 
        // apply header filter to allow on-the-fly amendments 
        $header = apply_filters('s2_email_headers', $header); 
        // collapse the headers using $key as the header name 
        foreach ( $header as $key => $value ) { 
            $headers[$key] = $key . ": " . $value; 
        } 
        $headers = implode("\n", $headers); 
        $headers .= "\n"; 
 
        return $headers; 
    } // end headers() 
 
    /** 
    Function to add UTM tracking details to links 
    */ 
    function get_tracking_link($link) { 
        if ( empty($link) ) { return; } 
        if ( !empty($this->subscribe2_options['tracking']) ) { 
            (strpos($link, '?') > 0) ? $delimiter .= '&' : $delimiter = '?'; 
            $tracking = $this->subscribe2_options['tracking']; 
            if ( strpos($tracking, "{ID}") ) { 
                $id = url_to_postid($link); 
                $tracking = str_replace("{ID}", $id, $tracking); 
            } 
            if ( strpos($tracking, "{TITLE}") ) { 
                $id = url_to_postid($link); 
                $title = urlencode(htmlentities(get_the_title($id), 1)); 
                $tracking = str_replace("{TITLE}", $title, $tracking); 
            } 
            return $link . $delimiter . $tracking; 
        } else { 
            return $link; 
        } 
    } // end get_tracking_link() 
 
    /** 
    Sends an email notification of a new post 
    */ 
    function publish($post, $preview = '') { 
        if ( !$post ) { return $post; } 
 
        if ( $this->s2_mu && !apply_filters('s2_allow_site_switching', $this->site_switching) ) { 
            global $switched; 
            if ( $switched ) { return; } 
        } 
 
        if ( $preview == '' ) { 
            // we aren't sending a Preview to the current user so carry out checks 
            $s2mail = get_post_meta($post->ID, '_s2mail', true); 
            if ( (isset($_POST['s2_meta_field']) && $_POST['s2_meta_field'] == 'no') || strtolower(trim($s2mail)) == 'no' ) { return $post; } 
 
            // are we doing daily digests? If so, don't send anything now 
            if ( $this->subscribe2_options['email_freq'] != 'never' ) { return $post; } 
 
            // is the current post of a type that should generate a notification email? 
            // uses s2_post_types filter to allow for custom post types in WP 3.0 
            if ( $this->subscribe2_options['pages'] == 'yes' ) { 
                $s2_post_types = array('page', 'post'); 
            } else { 
                $s2_post_types = array('post'); 
            } 
            $s2_post_types = apply_filters('s2_post_types', $s2_post_types); 
            if ( !in_array($post->post_type, $s2_post_types) ) { 
                return $post; 
            } 
 
            // Are we sending notifications for password protected posts? 
            if ( $this->subscribe2_options['password'] == "no" && $post->post_password != '' ) { 
                    return $post; 
            } 
 
            // Is the post assigned to a format for which we should not be sending posts 
            $post_format = get_post_format($post->ID); 
            $excluded_formats = explode(', ', $this->subscribe2_options['exclude_formats']); 
            if ( $post_format !== false && in_array($post_format, $excluded_formats) ) { 
                return $post; 
            } 
 
            $s2_taxonomies = apply_filters('s2_taxonomies', array('category')); 
            $post_cats = wp_get_object_terms($post->ID, $s2_taxonomies, array('fields' => 'ids')); 
            $check = false; 
            // is the current post assigned to any categories 
            // which should not generate a notification email? 
            foreach ( explode(', ', $this->subscribe2_options['exclude']) as $cat ) { 
                if ( in_array($cat, $post_cats) ) { 
                    $check = true; 
                } 
            } 
 
            if ( $check ) { 
                // hang on -- can registered users subscribe to 
                // excluded categories? 
                if ( '0' == $this->subscribe2_options['reg_override'] ) { 
                    // nope? okay, let's leave 
                    return $post; 
                } 
            } 
 
            // Are we sending notifications for Private posts? 
            // Action is added if we are, but double check option and post status 
            if ( $this->subscribe2_options['private'] == "yes" && $post->post_status == 'private' ) { 
                // don't send notification to public users 
                $check = true; 
            } 
 
            // lets collect our subscribers 
            $public = array(); 
            if ( !$check ) { 
                // if this post is assigned to an excluded 
                // category, or is a private post then 
                // don't send public subscribers a notification 
                $public = $this->get_public(); 
            } 
            if ( $post->post_type == 'page' ) { 
                $post_cats_string = implode(', ', get_all_category_ids()); 
            } else { 
                $post_cats_string = implode(', ', $post_cats); 
            } 
            $registered = $this->get_registered("cats=$post_cats_string"); 
 
            // do we have subscribers? 
            if ( empty($public) && empty($registered) ) { 
                // if not, no sense doing anything else 
                return $post; 
            } 
        } else { 
            // make sure we prime the taxonomy variable for preview posts 
            $s2_taxonomies = apply_filters('s2_taxonomies', array('category')); 
        } 
 
        // we set these class variables so that we can avoid 
        // passing them in function calls a little later 
        $this->post_title = "<a href=\"" . get_permalink($post->ID) . "\">" . html_entity_decode($post->post_title, ENT_QUOTES) . "</a>"; 
        $this->permalink = get_permalink($post->ID); 
        $this->post_date = get_the_time(get_option('date_format'), $post); 
        $this->post_time = get_the_time('', $post); 
 
        $author = get_userdata($post->post_author); 
        $this->authorname = html_entity_decode(apply_filters('the_author', $author->display_name), ENT_QUOTES); 
 
        // do we send as admin, or post author? 
        if ( 'author' == $this->subscribe2_options['sender'] ) { 
            // get author details 
            $user = &$author; 
            $this->myemail = $user->user_email; 
            $this->myname = html_entity_decode($user->display_name, ENT_QUOTES); 
        } elseif ( 'blogname' == $this->subscribe2_options['sender'] ) { 
            $this->myemail = get_option('admin_email'); 
            $this->myname = html_entity_decode(get_option('blogname'), ENT_QUOTES); 
        } else { 
            // get admin details 
            $user = $this->get_userdata($this->subscribe2_options['sender']); 
            $this->myemail = $user->user_email; 
            $this->myname = html_entity_decode($user->display_name, ENT_QUOTES); 
        } 
 
        $this->post_cat_names = implode(', ', wp_get_object_terms($post->ID, $s2_taxonomies, array('fields' => 'names'))); 
        $this->post_tag_names = implode(', ', wp_get_post_tags($post->ID, array('fields' => 'names'))); 
 
        // Get email subject 
        $subject = html_entity_decode(stripslashes(wp_kses($this->substitute($this->subscribe2_options['notification_subject']), ''))); 
        // Get the message template 
        $mailtext = apply_filters('s2_email_template', $this->subscribe2_options['mailtext']); 
        $mailtext = stripslashes($this->substitute($mailtext)); 
 
        $plaintext = $post->post_content; 
        $plaintext = strip_shortcodes($plaintext); 
 
        $plaintext = preg_replace('|<s[^>]*>(.*)<\/s>|Ui', '', $plaintext); 
        $plaintext = preg_replace('|<strike[^>]*>(.*)<\/strike>|Ui', '', $plaintext); 
        $plaintext = preg_replace('|<del[^>]*>(.*)<\/del>|Ui', '', $plaintext); 
        $excerpttext = $plaintext; 
 
        if ( strstr($mailtext, "{REFERENCELINKS}") ) { 
            $mailtext = str_replace("{REFERENCELINKS}", '', $mailtext); 
            $plaintext_links = ''; 
            $i = 0; 
            while ( preg_match('|<a([^>]*)>(.*)<\/a>|Ui', $plaintext, $matches) ) { 
                if ( preg_match('|href="([^"]*)"|', $matches[1], $link_matches) ) { 
                    $plaintext_links .= sprintf( "[%d] %s\r\n", ++$i, $link_matches[1] ); 
                    $link_replacement = sprintf( "%s [%d]", $matches[2], $i ); 
                } else { 
                    $link_replacement = $matches[2]; 
                } 
                $plaintext = preg_replace('|<a[^>]*>(.*)<\/a>|Ui', $link_replacement, $plaintext, 1); 
            } 
        } 
 
         $plaintext = trim(strip_tags($plaintext)); 
 
        if ( strstr($mailtext, "{REFERENCELINKS}") && $plaintext_links != '' ) { 
            $plaintext .= "\r\n\r\n" . trim($plaintext_links); 
        } 
 
        $gallid = '[gallery id="' . $post->ID . '"'; 
        $content = str_replace('[gallery', $gallid, $post->post_content); 
 
        // remove the autoembed filter to remove iframes from notification emails 
        if ( get_option('embed_autourls') ) { 
            global $wp_embed; 
            $priority = has_filter('the_content', array(&$wp_embed, 'autoembed')); 
            if ( $priority !== false ) { 
                remove_filter('the_content', array(&$wp_embed, 'autoembed'), $priority); 
            } 
        } 
 
        $content = apply_filters('the_content', $content); 
        $content = str_replace("]]>", "]]>", $content); 
 
        $excerpt = trim($post->post_excerpt); 
        if ( '' == $excerpt ) { 
            // no excerpt, is there a <!--more--> ? 
            if ( false !== strpos($excerpttext, '<!--more-->') ) { 
                list($excerpt, $more) = explode('<!--more-->', $excerpttext, 2); 
                // strip tags and trailing whitespace 
                $excerpt = trim(strip_tags($excerpt)); 
            } else { 
                // no <!--more-->, so grab the first 55 words 
                $excerpt = trim(strip_tags($excerpttext)); 
                $words = explode(' ', $excerpt, $this->excerpt_length + 1); 
                if (count($words) > $this->excerpt_length) { 
                    array_pop($words); 
                    array_push($words, '[...]'); 
                    $excerpt = implode(' ', $words); 
                } 
            } 
        } 
        $html_excerpt = trim($post->post_excerpt); 
        if ( '' == $html_excerpt ) { 
            // no excerpt, is there a <!--more--> ? 
            if ( false !== strpos($content, '<!--more-->') ) { 
                list($html_excerpt, $more) = explode('<!--more-->', $content, 2); 
                // balance HTML tags and then strip leading and trailing whitespace 
                $html_excerpt = trim(balanceTags($html_excerpt, true)); 
            } else { 
                // no <!--more-->, so grab the first 55 words 
                $words = explode(' ', $content, $this->excerpt_length + 1); 
                if (count($words) > $this->excerpt_length) { 
                    array_pop($words); 
                    array_push($words, '[...]'); 
                    $html_excerpt = implode(' ', $words); 
                    // balance HTML tags and then strip leading and trailing whitespace 
                    $html_excerpt = trim(balanceTags($html_excerpt, true)); 
                } else { 
                    $html_excerpt = $content; 
                } 
            } 
        } 
 
        // remove excess white space from with $excerpt and $plaintext 
        $excerpt = preg_replace('|[ ]+|', ' ', $excerpt); 
        $plaintext = preg_replace('|[ ]+|', ' ', $plaintext); 
 
        // prepare mail body texts 
        $plain_excerpt_body = str_replace("{POST}", $excerpt, $mailtext); 
        $plain_body = str_replace("{POST}", $plaintext, $mailtext); 
        $html_body = str_replace("\r\n", "<br />\r\n", $mailtext); 
        $html_body = str_replace("{POST}", $content, $html_body); 
        $html_excerpt_body = str_replace("\r\n", "<br />\r\n", $mailtext); 
        $html_excerpt_body = str_replace("{POST}", $html_excerpt, $html_excerpt_body); 
 
        if ( $preview != '' ) { 
            $this->myemail = $preview; 
            $this->myname = __('Plain Text Excerpt Preview', 'subscribe2'); 
            $this->mail(array($preview), $subject, $plain_excerpt_body); 
            $this->myname = __('Plain Text Full Preview', 'subscribe2'); 
            $this->mail(array($preview), $subject, $plain_body); 
            $this->myname = __('HTML Excerpt Preview', 'subscribe2'); 
            $this->mail(array($preview), $subject, $html_excerpt_body, 'html'); 
            $this->myname = __('HTML Full Preview', 'subscribe2'); 
            $this->mail(array($preview), $subject, $html_body, 'html'); 
        } else { 
            // Registered Subscribers first 
            // first we send plaintext summary emails 
            $recipients = $this->get_registered("cats=$post_cats_string&format=excerpt&author=$post->post_author"); 
            $recipients = apply_filters('s2_send_plain_excerpt_subscribers', $recipients, $post->ID); 
            $this->mail($recipients, $subject, $plain_excerpt_body); 
 
            // next we send plaintext full content emails 
            $recipients = $this->get_registered("cats=$post_cats_string&format=post&author=$post->post_author"); 
            $recipients = apply_filters('s2_send_plain_fullcontent_subscribers', $recipients, $post->ID); 
            $this->mail($recipients, $subject, $plain_body); 
 
            // next we send html excerpt content emails 
            $recipients = $this->get_registered("cats=$post_cats_string&format=html_excerpt&author=$post->post_author"); 
            $recipients = apply_filters('s2_send_html_excerpt_subscribers', $recipients, $post->ID); 
            $this->mail($recipients, $subject, $html_excerpt_body, 'html'); 
 
            // next we send html full content emails 
            $recipients = $this->get_registered("cats=$post_cats_string&format=html&author=$post->post_author"); 
            $recipients = apply_filters('s2_send_html_fullcontent_subscribers', $recipients, $post->ID); 
            $this->mail($recipients, $subject, $html_body, 'html'); 
 
            // and finally we send to Public Subscribers 
            $recipients = apply_filters('s2_send_public_subscribers', $public, $post->ID); 
            $this->mail($recipients, $subject, $plain_excerpt_body, 'text'); 
        } 
    } // end publish() 
 
    /** 
    Send confirmation email to a public subscriber 
    */ 
    function send_confirm($what = '', $is_remind = false) { 
        if ( $this->filtered == 1 ) { return true; } 
        if ( !$this->email || !$what ) { return false; } 
        $id = $this->get_id($this->email); 
        if ( !$id ) { 
            return false; 
        } 
 
        // generate the URL "?s2=ACTION+HASH+ID" 
        // ACTION = 1 to subscribe, 0 to unsubscribe 
        // HASH = wp_hash of email address 
        // ID = user's ID in the subscribe2 table 
        // use home instead of siteurl incase index.php is not in core wordpress directory 
        $link = get_option('home') . "/?s2="; 
 
        if ( 'add' == $what ) { 
            $link .= '1'; 
        } elseif ( 'del' == $what ) { 
            $link .= '0'; 
        } 
        $link .= wp_hash($this->email); 
        $link .= $id; 
 
        // sort the headers now so we have all substitute information 
        $mailheaders = $this->headers(); 
 
        if ( $is_remind == true ) { 
            $body = $this->substitute(stripslashes($this->subscribe2_options['remind_email'])); 
            $subject = $this->substitute(stripslashes($this->subscribe2_options['remind_subject'])); 
        } else { 
            $body = apply_filters('s2_confirm_email', stripslashes($this->subscribe2_options['confirm_email']), $what); 
            $body = $this->substitute($body); 
            if ( 'add' == $what ) { 
                $body = str_replace("{ACTION}", $this->subscribe, $body); 
                $subject = str_replace("{ACTION}", $this->subscribe, $this->subscribe2_options['confirm_subject']); 
            } elseif ( 'del' == $what ) { 
                $body = str_replace("{ACTION}", $this->unsubscribe, $body); 
                $subject = str_replace("{ACTION}", $this->unsubscribe, $this->subscribe2_options['confirm_subject']); 
            } 
            $subject = html_entity_decode($this->substitute(stripslashes($subject)), ENT_QUOTES); 
        } 
 
        $body = str_replace("{LINK}", $link, $body); 
 
        if ( $is_remind == true && function_exists('wpmq_mail') ) { 
            // could be sending lots of reminders so queue them if wpmq is enabled 
            @wp_mail($this->email, $subject, $body, $mailheaders, '', 0); 
        } else { 
            return @wp_mail($this->email, $subject, $body, $mailheaders); 
        } 
    } // end send_confirm() 
 
/** ===== Public Subscriber functions ===== */ 
    /** 
    Return an array of all the public subscribers 
    */ 
    function get_public($confirmed = 1) { 
        global $wpdb; 
        if ( 1 == $confirmed ) { 
            if ( '' == $this->all_confirmed ) { 
                $this->all_confirmed = $wpdb->get_col("SELECT email FROM $this->public WHERE active='1'"); 
            } 
            return $this->all_confirmed; 
        } else { 
            if ( '' == $this->all_unconfirmed ) { 
                $this->all_unconfirmed = $wpdb->get_col("SELECT email FROM $this->public WHERE active='0'"); 
            } 
            return $this->all_unconfirmed; 
        } 
    } // end get_public() 
 
    /** 
    Given a public subscriber ID, returns the email address 
    */ 
    function get_email($id = 0) { 
        global $wpdb; 
 
        if ( !$id ) { 
            return false; 
        } 
        return $wpdb->get_var($wpdb->prepare("SELECT email FROM $this->public WHERE id=%d", $id)); 
    } // end get_email() 
 
    /** 
    Given a public subscriber email, returns the subscriber ID 
    */ 
    function get_id($email = '') { 
        global $wpdb; 
 
        if ( !$email ) { 
            return false; 
        } 
        return $wpdb->get_var($wpdb->prepare("SELECT id FROM $this->public WHERE email=%s", $email)); 
    } // end get_id() 
 
    /** 
    Add an public subscriber to the subscriber table 
    If added by admin it is immediately confirmed, otherwise as unconfirmed 
    */ 
    function add($email = '', $confirm = false) { 
        if ( $this->filtered == 1 ) { return; } 
        global $wpdb; 
 
        if ( !is_email($email) ) { return false; } 
 
        if ( false !== $this->is_public($email) ) { 
            // is this an email for a registered user 
            $check = $wpdb->get_var($wpdb->prepare("SELECT user_email FROM $wpdb->users WHERE user_email=%s", $this->email)); 
            if ( $check ) { return; } 
            if ( $confirm ) { 
                $wpdb->query($wpdb->prepare("UPDATE $this->public SET active='1', ip=%s WHERE CAST(email as binary)=%s", $this->ip, $email)); 
            } else { 
                $wpdb->query($wpdb->prepare("UPDATE $this->public SET date=CURDATE(), time=CURTIME() WHERE CAST(email as binary)=%s", $email)); 
            } 
        } else { 
            if ( $confirm ) { 
                global $current_user; 
                $wpdb->query($wpdb->prepare("INSERT INTO $this->public (email, active, date, time, ip) VALUES (%s, %d, CURDATE(), CURTIME(), %s)", $email, 1, $current_user->user_login)); 
            } else { 
                $wpdb->query($wpdb->prepare("INSERT INTO $this->public (email, active, date, time, ip) VALUES (%s, %d, CURDATE(), CURTIME(), %s)", $email, 0, $this->ip)); 
            } 
        } 
    } // end add() 
 
    /** 
    Remove a public subscriber user from the subscription table 
    */ 
    function delete($email = '') { 
        global $wpdb; 
 
        if ( !is_email($email) ) { return false; } 
        $wpdb->query($wpdb->prepare("DELETE FROM $this->public WHERE CAST(email as binary)=%s", $email)); 
    } // end delete() 
 
    /** 
    Toggle a public subscriber's status 
    */ 
    function toggle($email = '') { 
        global $wpdb; 
 
        if ( '' == $email || !is_email($email) ) { return false; } 
 
        // let's see if this is a public user 
        $status = $this->is_public($email); 
        if ( false === $status ) { return false; } 
 
        if ( '0' == $status ) { 
            $wpdb->query($wpdb->prepare("UPDATE $this->public SET active='1', conf_date=CURDATE(), conf_time=CURTIME(), conf_ip=%s WHERE CAST(email as binary)=%s", $this->ip, $email)); 
        } else { 
            $wpdb->query($wpdb->prepare("UPDATE $this->public SET active='0', conf_date=CURDATE(), conf_time=CURTIME(), conf_ip=%s WHERE CAST(email as binary)=%s", $this->ip, $email)); 
        } 
    } // end toggle() 
 
    /** 
    Send reminder email to unconfirmed public subscribers 
    */ 
    function remind($emails = '') { 
        if ( '' == $emails ) { return false; } 
 
        $recipients = explode(", ", $emails); 
        if ( !is_array($recipients) ) { $recipients = (array)$recipients; } 
        foreach ( $recipients as $recipient ) { 
            $this->email = $recipient; 
            $this->send_confirm('add', true); 
        } 
    } //end remind() 
 
    /** 
    Is the supplied email address a public subscriber? 
    */ 
    function is_public($email = '') { 
        global $wpdb; 
 
        if ( '' == $email ) { return false; } 
 
        // run the query and force case sensitivity 
        $check = $wpdb->get_var($wpdb->prepare("SELECT active FROM $this->public WHERE CAST(email as binary)=%s", $email)); 
        if ( '0' == $check || '1' == $check ) { 
            return $check; 
        } else { 
            return false; 
        } 
    } // end is_public() 
 
/** ===== Registered User and Subscriber functions ===== */ 
    /** 
    Is the supplied email address a registered user of the blog? 
    */ 
    function is_registered($email = '') { 
        global $wpdb; 
 
        if ( '' == $email ) { return false; } 
 
        $check = $wpdb->get_var($wpdb->prepare("SELECT user_email FROM $wpdb->users WHERE user_email=%s", $email)); 
        if ( $check ) { 
            return true; 
        } else { 
            return false; 
        } 
    } // end is_registered() 
 
    /** 
    Return Registered User ID from email 
    */ 
    function get_user_id($email = '') { 
        global $wpdb; 
 
        if ( '' == $email ) { return false; } 
 
        $id = $wpdb->get_var($wpdb->prepare("SELECT id FROM $wpdb->users WHERE user_email=%s", $email)); 
 
        return $id; 
    } // end get_user_id() 
 
    /** 
    Return an array of all subscribers emails or IDs 
    */ 
    function get_all_registered($return = 'email') { 
        global $wpdb; 
 
        if ( $this->s2_mu ) { 
            if ( $return === 'ID' ) { 
                if ( $this->all_registered_id === '' ) { 
                    $this->all_registered_id = $wpdb->get_col("SELECT user_id FROM $wpdb->usermeta WHERE meta_key='" . $wpdb->prefix . "capabilities'"); 
                } 
                return $this->all_registered_id; 
            } else { 
                if ( $this->all_registered_email === '' ) { 
                    $this->all_registered_email = $wpdb->get_col("SELECT a.user_email FROM $wpdb->users AS a INNER JOIN $wpdb->usermeta AS b ON a.ID = b.user_id WHERE b.meta_key='" . $wpdb->prefix . "capabilities'"); 
                } 
                return $this->all_registered_email; 
            } 
        } else { 
            if ( $return === 'ID' ) { 
                if ( $this->all_registered_id === '' ) { 
                    $this->all_registered_id = $wpdb->get_col("SELECT ID FROM $wpdb->users"); 
                } 
                return $this->all_registered_id; 
            } else { 
                if ( $this->all_registered_email === '' ) { 
                    $this->all_registered_email = $wpdb->get_col("SELECT user_email FROM $wpdb->users"); 
                } 
                return $this->all_registered_email; 
            } 
        } 
    } // end get_all_registered() 
 
    /** 
    Return an array of registered subscribers 
    Collect all the registered users of the blog who are subscribed to the specified categories 
    */ 
    function get_registered($args = '') { 
        global $wpdb; 
 
        parse_str($args, $r); 
        if ( !isset($r['format']) ) 
            $r['format'] = 'all'; 
        if ( !isset($r['cats']) ) 
            $r['cats'] = ''; 
        if ( !isset($r['author']) ) 
            $r['author'] = ''; 
 
        // collect all subscribers for compulsory categories 
        $compulsory = explode(', ', $this->subscribe2_options['compulsory']); 
        foreach ( explode(', ', $r['cats']) as $cat ) { 
            if ( in_array($cat, $compulsory) ) { 
                $r['cats'] = ''; 
            } 
        } 
 
        $JOIN = ''; $AND = ''; 
        // text or HTML subscribers 
        if ( 'all' != $r['format'] ) { 
            $JOIN .= "INNER JOIN $wpdb->usermeta AS b ON a.user_id = b.user_id "; 
            $AND .= $wpdb->prepare(" AND b.meta_key=%s AND b.meta_value=", $this->get_usermeta_keyname('s2_format')); 
            if ( 'html' == $r['format'] ) { 
                $AND .= "'html'"; 
            } elseif ( 'html_excerpt' == $r['format'] ) { 
                $AND .= "'html_excerpt'"; 
            } elseif ( 'post' == $r['format'] ) { 
                $AND .= "'post'"; 
            } elseif ( 'excerpt' == $r['format'] ) { 
                $AND .= "'excerpt'"; 
            } 
        } 
 
        // specific category subscribers 
        if ( '' != $r['cats'] ) { 
            $JOIN .= "INNER JOIN $wpdb->usermeta AS c ON a.user_id = c.user_id "; 
            $and = ''; 
            foreach ( explode(', ', $r['cats']) as $cat ) { 
                ('' == $and) ? $and = $wpdb->prepare("c.meta_key=%s", $this->get_usermeta_keyname('s2_cat') . $cat) : $and .= $wpdb->prepare(" OR c.meta_key=%s", $this->get_usermeta_keyname('s2_cat') . $cat); 
            } 
            $AND .= " AND ($and)"; 
        } 
 
        // specific authors 
        if ( '' != $r['author'] ) { 
            $JOIN .= "INNER JOIN $wpdb->usermeta AS d ON a.user_id = d.user_id "; 
            $AND .= $wpdb->prepare(" AND (d.meta_key=%s AND NOT FIND_IN_SET(%s, d.meta_value))", $this->get_usermeta_keyname('s2_authors'), $r['author']); 
        } 
 
        if ( $this->s2_mu ) { 
            $sql = $wpdb->prepare("SELECT a.user_id FROM $wpdb->usermeta AS a INNER JOIN $wpdb->usermeta AS e ON a.user_id = e.user_id " . $JOIN . "WHERE a.meta_key='" . $wpdb->prefix . "capabilities' AND e.meta_key=%s AND e.meta_value <> ''" . $AND, $this->get_usermeta_keyname('s2_subscribed')); 
        } else { 
            $sql = $wpdb->prepare("SELECT a.user_id FROM $wpdb->usermeta AS a " . $JOIN . "WHERE a.meta_key=%s AND a.meta_value <> ''" . $AND, $this->get_usermeta_keyname('s2_subscribed')); 
        } 
        $result = $wpdb->get_col($sql); 
        if ( $result ) { 
            $ids = implode(', ', array_map(array($this, 'prepare_in_data'), $result)); 
            $registered = $wpdb->get_col("SELECT user_email FROM $wpdb->users WHERE ID IN ($ids)"); 
        } 
 
        if ( empty($registered) ) { return array(); } 
 
        // apply filter to registered users to add or remove additional addresses, pass args too for additional control 
        $registered = apply_filters('s2_registered_subscribers', $registered, $args); 
        return $registered; 
    } // end get_registered() 
 
    /** 
    Function to ensure email is compliant with internet messaging standards 
    */ 
    function sanitize_email($email) { 
        $email = trim($email); 
        if ( !is_email($email) ) { return; } 
 
        // ensure that domain is in lowercase as per internet email standards http://www.ietf.org/rfc/rfc5321.txt 
        list($name, $domain) = explode('@', $email, 2); 
        return $name . "@" . strtolower($domain); 
    } // end sanitize_email() 
 
    /** 
    Create the appropriate usermeta values when a user registers 
    If the registering user had previously subscribed to notifications, this function will delete them from the public subscriber list first 
    */ 
    function register($user_ID = 0, $consent = false) { 
        global $wpdb; 
 
        if ( 0 == $user_ID ) { return $user_ID; } 
        $user = get_userdata($user_ID); 
 
        // Subscribe registered users to categories obeying excluded categories 
        if ( 0 == $this->subscribe2_options['reg_override'] || 'no' == $this->subscribe2_options['newreg_override'] ) { 
            $all_cats = $this->all_cats(true, 'ID'); 
        } else { 
            $all_cats = $this->all_cats(false, 'ID'); 
        } 
 
        $cats = ''; 
        foreach ( $all_cats as $cat ) { 
            ('' == $cats) ? $cats = "$cat->term_id" : $cats .= ", $cat->term_id"; 
        } 
 
        if ( '' == $cats ) { 
            // sanity check, might occur if all cats excluded and reg_override = 0 
            return $user_ID; 
        } 
 
        // has this user previously signed up for email notification? 
        if ( false !== $this->is_public($this->sanitize_email($user->user_email)) ) { 
            // delete this user from the public table, and subscribe them to all the categories 
            $this->delete($user->user_email); 
            update_user_meta($user_ID, $this->get_usermeta_keyname('s2_subscribed'), $cats); 
            foreach ( explode(', ', $cats) as $cat ) { 
                update_user_meta($user_ID, $this->get_usermeta_keyname('s2_cat') . $cat, $cat); 
            } 
            update_user_meta($user_ID, $this->get_usermeta_keyname('s2_format'), 'excerpt'); 
            update_user_meta($user_ID, $this->get_usermeta_keyname('s2_autosub'), $this->subscribe2_options['autosub_def']); 
            update_user_meta($user_ID, $this->get_usermeta_keyname('s2_authors'), ''); 
        } else { 
            // create post format entries for all users 
            if ( in_array($this->subscribe2_options['autoformat'], array('html', 'html_excerpt', 'post', 'excerpt')) ) { 
                update_user_meta($user_ID, $this->get_usermeta_keyname('s2_format'), $this->subscribe2_options['autoformat']); 
            } else { 
                update_user_meta($user_ID, $this->get_usermeta_keyname('s2_format'), 'excerpt'); 
            } 
            update_user_meta($user_ID, $this->get_usermeta_keyname('s2_autosub'), $this->subscribe2_options['autosub_def']); 
            // if the are no existing subscriptions, create them if we have consent 
            if (  true === $consent ) { 
                update_user_meta($user_ID, $this->get_usermeta_keyname('s2_subscribed'), $cats); 
                foreach ( explode(', ', $cats) as $cat ) { 
                    update_user_meta($user_ID, $this->get_usermeta_keyname('s2_cat') . $cat, $cat); 
                } 
            } 
            update_user_meta($user_ID, $this->get_usermeta_keyname('s2_authors'), ''); 
        } 
        return $user_ID; 
    } // end register() 
 
    /** 
    Get admin data from record 1 or first user with admin rights 
    */ 
    function get_userdata($admin_id) { 
        global $wpdb, $userdata; 
 
        if ( is_numeric($admin_id) ) { 
            $admin = get_userdata($admin_id); 
        } elseif ( $admin_id == 'admin' ) { 
            //ensure compatibility with < 4.16 
            $admin = get_userdata('1'); 
        } else { 
            $admin = &$userdata; 
        } 
 
        if ( empty($admin) || $admin->ID == 0 ) { 
            $role = array('role' => 'administrator'); 
            $wp_user_query = get_users( $role ); 
            $admin = $wp_user_query[0]; 
        } 
 
        return $admin; 
    } //end get_userdata() 
 
    /** 
    Subscribe/unsubscribe user from one-click submission 
    */ 
    function one_click_handler($user_ID, $action) { 
        if ( !isset($user_ID) || !isset($action) ) { return; } 
 
        $all_cats = $this->all_cats(true); 
 
        if ( 'subscribe' == $action ) { 
            // Subscribe 
            $new_cats = array(); 
            foreach ( $all_cats as $cat ) { 
                update_user_meta($user_ID, $this->get_usermeta_keyname('s2_cat') . $cat->term_id, $cat->term_id); 
                $new_cats[] = $cat->term_id; 
            } 
 
            update_user_meta($user_ID, $this->get_usermeta_keyname('s2_subscribed'), implode(', ', $new_cats)); 
 
            if ( 'yes' == $this->subscribe2_options['show_autosub'] && 'no' != get_user_meta($user_ID, $this->get_usermeta_keyname('s2_subscribed'), true) ) { 
                update_user_meta($user_ID, $this->get_usermeta_keyname('s2_autosub'), 'yes'); 
            } 
        } elseif ( 'unsubscribe' == $action ) { 
            // Unsubscribe 
            foreach ( $all_cats as $cat ) { 
                delete_user_meta($user_ID, $this->get_usermeta_keyname('s2_cat') . $cat->term_id); 
            } 
 
            delete_user_meta($user_ID, $this->get_usermeta_keyname('s2_subscribed')); 
            update_user_meta($user_ID, $this->get_usermeta_keyname('s2_autosub'), 'no'); 
        } 
    } //end one_click_handler() 
 
/** ===== helper functions: forms and stuff ===== */ 
    /** 
    Get an object of all categories, include default and custom type 
    */ 
    function all_cats($exclude = false, $orderby = 'slug') { 
        $all_cats = array(); 
        $s2_taxonomies = apply_filters('s2_taxonomies', array('category')); 
 
        foreach( $s2_taxonomies as $taxonomy ) { 
            if ( taxonomy_exists($taxonomy) ) { 
                $all_cats = array_merge($all_cats, get_categories(array('hide_empty' => false, 'orderby' => $orderby, 'taxonomy' => $taxonomy))); 
            } 
        } 
 
        if ( $exclude === true ) { 
            // remove excluded categories from the returned object 
            $excluded = explode(', ', $this->subscribe2_options['exclude']); 
 
            // need to use $id like this as this is a mixed array / object 
            $id = 0; 
            foreach ( $all_cats as $cat) { 
                if ( in_array($cat->term_id, $excluded) ) { 
                    unset($all_cats[$id]); 
                } 
                $id++; 
            } 
        } 
 
        return $all_cats; 
    } // end all_cats() 
 
    /** 
    Function to sanitise array of data for SQL 
    */ 
    function prepare_in_data($data) { 
        global $wpdb; 
        return $wpdb->prepare('%s', $data); 
    } // end prepare_in_data() 
 
    /** 
    Filter for usermeta table key names to adjust them if needed for WPMU blogs 
    */ 
    function get_usermeta_keyname($metaname) { 
        global $wpdb; 
 
        // Is this WordPressMU or not? 
        if ( $this->s2_mu === true ) { 
            switch( $metaname ) { 
                case 's2_subscribed': 
                case 's2_cat': 
                case 's2_format': 
                case 's2_autosub': 
                case 's2_authors': 
                    return $wpdb->prefix . $metaname; 
                    break; 
            } 
        } 
        // Not MU or not a prefixed option name 
        return $metaname; 
    } // end get_usermeta_keyname() 
 
    /** 
    Adds information to the WordPress registration screen for new users 
    */ 
    function register_form() { 
        if ( 'no' == $this->subscribe2_options['autosub'] ) { return; } 
        if ( 'wpreg' == $this->subscribe2_options['autosub'] ) { 
            echo "<p>\r\n<label>"; 
            echo __('Check here to Subscribe to email notifications for new posts', 'subscribe2') . ":<br />\r\n"; 
            echo "<input type=\"checkbox\" name=\"reg_subscribe\"" . checked($this->subscribe2_options['wpregdef'], 'yes', false) . " />"; 
            echo "</label>\r\n"; 
            echo "</p>\r\n"; 
        } elseif ( 'yes' == $this->subscribe2_options['autosub'] ) { 
            echo "<p>\r\n<center>\r\n"; 
            echo __('By registering with this blog you are also agreeing to receive email notifications for new posts but you can unsubscribe at anytime', 'subscribe2') . ".<br />\r\n"; 
            echo "</center></p>\r\n"; 
        } 
    } // end register_form() 
 
    /** 
    Process function to add action if user selects to subscribe to posts during registration 
    */ 
    function register_post($user_ID = 0) { 
        global $_POST; 
        if ( 0 == $user_ID ) { return; } 
        if ( 'yes' == $this->subscribe2_options['autosub'] || ( isset($_POST['reg_subscribe']) && 'on' == $_POST['reg_subscribe'] && 'wpreg' == $this->subscribe2_options['autosub'] ) ) { 
            $this->register($user_ID, true); 
        } else { 
            $this->register($user_ID, false); 
        } 
    } // end register_post() 
 
/** ===== comment subscriber functions ===== */ 
    /** 
    Display check box on comment page 
    */ 
    function s2_comment_meta_form() { 
        if ( is_user_logged_in() ) { 
            echo $this->profile; 
        } else { 
            echo "<p style=\"width: auto;\"><label><input type=\"checkbox\" name=\"s2_comment_request\" value=\"1\" " . checked($this->subscribe2_options['comment_def'], 'yes', false) . "/> " . __('Check here to Subscribe to notifications for new posts', 'subscribe2') . "</label></p>"; 
        } 
    } // end s2_comment_meta_form() 
 
    /** 
    Process comment meta data 
    */ 
    function s2_comment_meta($comment_ID, $approved = 0) { 
        if ( $_POST['s2_comment_request'] == '1' ) { 
            switch ($approved) { 
                case '0': 
                    // Unapproved so hold in meta data pending moderation 
                    add_comment_meta($comment_ID, 's2_comment_request', $_POST['s2_comment_request']); 
                    break; 
                case '1': 
                    // Approved so add 
                    $comment = get_comment($comment_ID); 
                    $is_public = $this->is_public($comment->comment_author_email); 
                    if ( $is_public == 0 ) { 
                        $this->toggle($comment->comment_author_email); 
                    } 
                    $is_registered = $this->is_registered($comment->comment_author_email); 
                    if ( !$is_public && !$is_registered ) { 
                        $this->add($comment->comment_author_email, true); 
                    } 
                    break; 
                default : 
                    break; 
            } 
        } 
    } // end s2_comment_meta() 
 
    /** 
    Action subscribe requests made on comment forms when comments are approved 
    */ 
    function comment_status($comment_ID = 0) { 
        global $wpdb; 
 
        // get meta data 
        $subscribe = get_comment_meta($comment_ID, 's2_comment_request', true); 
        if ( $subscribe != '1' ) { return $comment_ID; } 
 
        // Retrieve the information about the comment 
        $sql = $wpdb->prepare("SELECT comment_author_email, comment_approved FROM $wpdb->comments WHERE comment_ID=%s LIMIT 1", $comment_ID); 
        $comment = $wpdb->get_row($sql, OBJECT); 
        if ( empty($comment) ) { return $comment_ID; } 
 
        switch ($comment->comment_approved) { 
            case '0': // Unapproved 
                break; 
            case '1': // Approved 
                $is_public = $this->is_public($comment->comment_author_email); 
                if ( $is_public == 0 ) { 
                    $this->toggle($comment->comment_author_email); 
                } 
                $is_registered = $this->is_registered($comment->comment_author_email); 
                if ( !$is_public && !$is_registered ) { 
                    $this->add($comment->comment_author_email, true); 
                } 
                delete_comment_meta($comment_ID, 's2_comment_request'); 
                break; 
            default: // post is trash, spam or deleted 
                delete_comment_meta($comment_ID, 's2_comment_request'); 
                break; 
        } 
 
        return $comment_ID; 
    } // end comment_status() 
 
/** ===== widget functions ===== */ 
    /** 
    Register the form widget 
    */ 
    function subscribe2_widget() { 
        require_once( S2PATH . 'include/widget.php'); 
        register_widget('S2_Form_widget'); 
    } // end subscribe2_widget() 
 
    /** 
    Register the counter widget 
    */ 
    function counter_widget() { 
        require_once( S2PATH . 'include/counterwidget.php'); 
        register_widget('S2_Counter_widget'); 
    } // end counter_widget() 
 
/** ===== wp-cron functions ===== */ 
    /** 
    Add a weekly event to cron 
    */ 
    function add_weekly_sched($scheds) { 
        $scheds['weekly'] = array('interval' => 604800, 'display' => __('Weekly', 'subscribe2')); 
 
        return $scheds; 
    } // end add_weekly_sched() 
 
    /** 
    Send a digest of recent new posts 
    */ 
    function subscribe2_cron($preview = '', $resend = '') { 
        if ( defined('DOING_S2_CRON') && DOING_S2_CRON ) { return; } 
        define( 'DOING_S2_CRON', true ); 
        global $wpdb, $post; 
 
        if ( '' == $preview ) { 
            // update last_s2cron execution time before completing or bailing 
            $now = current_time('mysql'); 
            $prev = $this->subscribe2_options['last_s2cron']; 
            $last = $this->subscribe2_options['previous_s2cron']; 
            $this->subscribe2_options['last_s2cron'] = $now; 
            $this->subscribe2_options['previous_s2cron'] = $prev; 
            if ( '' == $resend ) { 
                // update sending times provided this is not a resend 
                update_option('subscribe2_options', $this->subscribe2_options); 
            } 
 
            // set up SQL query based on options 
            if ( $this->subscribe2_options['private'] == 'yes' ) { 
                $status = "'publish', 'private'"; 
            } else { 
                $status = "'publish'"; 
            } 
 
            // send notifications for allowed post type (defaults for posts and pages) 
            // uses s2_post_types filter to allow for custom post types in WP 3.0 
            if ( $this->subscribe2_options['pages'] == 'yes' ) { 
                $s2_post_types = array('page', 'post'); 
            } else { 
                $s2_post_types = array('post'); 
            } 
            $s2_post_types = apply_filters('s2_post_types', $s2_post_types); 
            foreach( $s2_post_types as $post_type ) { 
                ('' == $type) ? $type = $wpdb->prepare("%s", $post_type) : $type .= $wpdb->prepare(", %s", $post_type); 
            } 
 
            // collect posts 
            if ( $resend == 'resend' ) { 
                if ( $this->subscribe2_options['cron_order'] == 'desc' ) { 
                    $posts = $wpdb->get_results($wpdb->prepare("SELECT ID, post_title, post_excerpt, post_content, post_type, post_password, post_date, post_author FROM $wpdb->posts WHERE post_date >= %s AND post_date < %s AND post_status IN ($status) AND post_type IN ($type) ORDER BY post_date DESC", $last, $prev)); 
                } else { 
                    $posts = $wpdb->get_results($wpdb->prepare("SELECT ID, post_title, post_excerpt, post_content, post_type, post_password, post_date, post_author FROM $wpdb->posts WHERE post_date >= %s AND post_date < %s AND post_status IN ($status) AND post_type IN ($type) ORDER BY post_date ASC", $last, $prev)); 
                } 
            } else { 
                if ( $this->subscribe2_options['cron_order'] == 'desc' ) { 
                    $posts = $wpdb->get_results($wpdb->prepare("SELECT ID, post_title, post_excerpt, post_content, post_type, post_password, post_date, post_author FROM $wpdb->posts WHERE post_date >= %s AND post_date < %s AND post_status IN ($status) AND post_type IN ($type) ORDER BY post_date DESC", $prev, $now)); 
                } else { 
                    $posts = $wpdb->get_results($wpdb->prepare("SELECT ID, post_title, post_excerpt, post_content, post_type, post_password, post_date, post_author FROM $wpdb->posts WHERE post_date >= %s AND post_date < %s AND post_status IN ($status) AND post_type IN ($type) ORDER BY post_date ASC", $prev, $now)); 
                } 
            } 
        } else { 
            // we are sending a preview 
            $now = $prev = $last = current_time('mysql'); 
            $posts = get_posts('numberposts=1'); 
        } 
 
        // Collect sticky posts if desired 
        if ( $this->subscribe2_options['stickies'] == 'yes' ) { 
            $sticky_ids = get_option('sticky_posts'); 
            if ( !empty($sticky_ids) ) { 
                $sticky_posts = get_posts( array('post__in' => $sticky_ids) ); 
                $posts = array_merge((array)$sticky_posts, (array)$posts); 
            } 
        } 
 
        // do we have any posts? 
        if ( empty($posts) && !has_filter('s2_digest_email') ) { return false; } 
        $this->post_count = count($posts); 
 
        // if we have posts, let's prepare the digest 
        $datetime = get_option('date_format') . ' @ ' . get_option('time_format'); 
        $all_post_cats = array(); 
        $ids = array(); 
        $mailtext = apply_filters('s2_email_template', $this->subscribe2_options['mailtext']); 
        $table = ''; 
        $tablelinks = ''; 
        $message_post= ''; 
        $message_posttime = ''; 
        foreach ( $posts as $post ) { 
            // keep an array of post ids and skip if we've already done it once 
            if ( in_array($post->ID, $ids) ) { continue; } 
            $ids[] = $post->ID; 
            $s2_taxonomies = apply_filters('s2_taxonomies', array('category')); 
            $post_cats = wp_get_object_terms($post->ID, $s2_taxonomies, array('fields' => 'ids')); 
            $post_cats_string = implode(', ', $post_cats); 
            $all_post_cats = array_unique(array_merge($all_post_cats, $post_cats)); 
            $check = false; 
            // Pages are put into category 1 so make sure we don't exclude 
            // pages if category 1 is excluded 
            if ( $post->post_type != 'page' ) { 
                // is the current post assigned to any categories 
                // which should not generate a notification email? 
                foreach ( explode(', ', $this->subscribe2_options['exclude']) as $cat ) { 
                    if ( in_array($cat, $post_cats) ) { 
                        $check = true; 
                    } 
                } 
            } 
            // is the current post set by the user to 
            // not generate a notification email? 
            $s2mail = get_post_meta($post->ID, '_s2mail', true); 
            if ( strtolower(trim($s2mail)) == 'no' ) { 
                $check = true; 
            } 
            // is the current post private 
            // and should this not generate a notification email? 
            if ( $this->subscribe2_options['password'] == 'no' && $post->post_password != '' ) { 
                $check = true; 
            } 
            // is the post assigned a format that should 
            // not be included in the notification email? 
            $post_format = get_post_format($post->ID); 
            $excluded_formats = explode(', ', $this->subscribe2_options['exclude_formats']); 
            if ( $post_format !== false && in_array($post_format, $excluded_formats) ) { 
                $check = true; 
            } 
            // if this post is excluded 
            // don't include it in the digest 
            if ( $check ) { 
                continue; 
            } 
            $post_title = html_entity_decode($post->post_title, ENT_QUOTES); 
            ('' == $table) ? $table .= "* " . $post_title : $table .= "\r\n* " . $post_title; 
            ('' == $tablelinks) ? $tablelinks .= "* " . $post_title : $tablelinks .= "\r\n* " . $post_title; 
            $message_post .= $post_title; 
            $message_posttime .= $post_title; 
            if ( strstr($mailtext, "{AUTHORNAME}") ) { 
                $author = get_userdata($post->post_author); 
                if ( $author->display_name != '' ) { 
                    $message_post .= " (" . __('Author', 'subscribe2') . ": " . html_entity_decode(apply_filters('the_author', $author->display_name), ENT_QUOTES) . ")"; 
                    $message_posttime .= " (" . __('Author', 'subscribe2') . ": " . html_entity_decode(apply_filters('the_author', $author->display_name), ENT_QUOTES) . ")"; 
                } 
            } 
            $message_post .= "\r\n"; 
            $message_posttime .= "\r\n"; 
 
            $message_posttime .= __('Posted on', 'subscribe2') . ": " . mysql2date($datetime, $post->post_date) . "\r\n"; 
            if ( strstr($mailtext, "{TINYLINK}") ) { 
                $tinylink = file_get_contents('http://tinyurl.com/api-create.php?url=' . urlencode($this->get_tracking_link(get_permalink($post->ID)))); 
            } else { 
                $tinylink = false; 
            } 
            if ( strstr($mailtext, "{TINYLINK}") && $tinylink !== 'Error' && $tinylink !== false ) { 
                $tablelinks .= "\r\n" . $tinylink . "\r\n"; 
                $message_post .= $tinylink . "\r\n"; 
                $message_posttime .= $tinylink . "\r\n"; 
            } else { 
                $tablelinks .= "\r\n" . $this->get_tracking_link(get_permalink($post->ID)) . "\r\n"; 
                $message_post .= $this->get_tracking_link(get_permalink($post->ID)) . "\r\n"; 
                $message_posttime .= $this->get_tracking_link(get_permalink($post->ID)) . "\r\n"; 
            } 
 
            if ( strstr($mailtext, "{CATS}") ) { 
                $post_cat_names = implode(', ', wp_get_object_terms($post->ID, $s2_taxonomies, array('fields' => 'names'))); 
                $message_post .= __('Posted in', 'subscribe2') . ": " . $post_cat_names . "\r\n"; 
                $message_posttime .= __('Posted in', 'subscribe2') . ": " . $post_cat_names . "\r\n"; 
            } 
            if ( strstr($mailtext, "{TAGS}") ) { 
                $post_tag_names = implode(', ', wp_get_post_tags($post->ID, array('fields' => 'names'))); 
                if ( $post_tag_names != '' ) { 
                    $message_post .= __('Tagged as', 'subscribe2') . ": " . $post_tag_names . "\r\n"; 
                    $message_posttime .= __('Tagged as', 'subscribe2') . ": " . $post_tag_names . "\r\n"; 
                } 
            } 
            $message_post .= "\r\n"; 
            $message_posttime .= "\r\n"; 
 
            ( !empty($post->post_excerpt) ) ? $excerpt = trim($post->post_excerpt) : $excerpt = ''; 
            if ( '' == $excerpt ) { 
                // no excerpt, is there a <!--more--> ? 
                if ( false !== strpos($post->post_content, '<!--more-->') ) { 
                    list($excerpt, $more) = explode('<!--more-->', $post->post_content, 2); 
                    $excerpt = strip_tags($excerpt); 
                    $excerpt = strip_shortcodes($excerpt); 
                } else { 
                    $excerpt = strip_tags($post->post_content); 
                    $excerpt = strip_shortcodes($excerpt); 
                    $words = explode(' ', $excerpt, $this->excerpt_length + 1); 
                    if ( count($words) > $this->excerpt_length ) { 
                        array_pop($words); 
                        array_push($words, '[...]'); 
                        $excerpt = implode(' ', $words); 
                    } 
                } 
                // strip leading and trailing whitespace 
                $excerpt = trim($excerpt); 
            } 
            $message_post .= $excerpt . "\r\n\r\n"; 
            $message_posttime .= $excerpt . "\r\n\r\n"; 
        } 
 
        // we add a blank line after each post excerpt now trim white space that occurs for the last post 
        $message_post = trim($message_post); 
        $message_posttime = trim($message_posttime); 
        // remove excess white space from within $message_post and $message_posttime 
        $message_post = preg_replace('|[ ]+|', ' ', $message_post); 
        $message_posttime = preg_replace('|[ ]+|', ' ', $message_posttime); 
        $message_post = preg_replace("|[\r\n]{3, }|", "\r\n\r\n", $message_post); 
        $message_posttime = preg_replace("|[\r\n]{3, }|", "\r\n\r\n", $message_posttime); 
 
        // apply filter to allow external content to be inserted or content manipulated 
        $message_post = apply_filters('s2_digest_email', $message_post, $now, $prev, $last, $this->subscribe2_options['cron_order']); 
        $message_posttime = apply_filters('s2_digest_email', $message_posttime, $now, $prev, $last, $this->subscribe2_options['cron_order']); 
 
        //sanity check - don't send a mail if the content is empty 
        if ( !$message_post && !$message_posttime && !$table && !$tablelinks ) { 
            return; 
        } 
 
        // get sender details 
        if ( $this->subscribe2_options['sender'] == 'blogname' ) { 
            $this->myname = html_entity_decode(get_option('blogname'), ENT_QUOTES); 
            $this->myemail = get_bloginfo('admin_email'); 
        } else { 
            $user = $this->get_userdata($this->subscribe2_options['sender']); 
            $this->myemail = $user->user_email; 
            $this->myname = html_entity_decode($user->display_name, ENT_QUOTES); 
        } 
 
        $scheds = (array)wp_get_schedules(); 
        $email_freq = $this->subscribe2_options['email_freq']; 
        $display = $scheds[$email_freq]['display']; 
        ( '' == get_option('blogname') ) ? $subject = "" : $subject = "[" . stripslashes(html_entity_decode(get_option('blogname'), ENT_QUOTES)) . "] "; 
        $subject .= $display . " " . __('Digest Email', 'subscribe2'); 
        $mailtext = str_replace("{TABLELINKS}", $tablelinks, $mailtext); 
        $mailtext = str_replace("{TABLE}", $table, $mailtext); 
        $mailtext = str_replace("{POSTTIME}", $message_posttime, $mailtext); 
        $mailtext = str_replace("{POST}", $message_post, $mailtext); 
        $mailtext = stripslashes($this->substitute($mailtext)); 
 
        // prepare recipients 
        if ( $preview != '' ) { 
            $this->myemail = $preview; 
            $this->myname = __('Digest Preview', 'subscribe2'); 
            $this->mail(array($preview), $subject, $mailtext); 
        } else { 
            $public = $this->get_public(); 
            $all_post_cats_string = implode(', ', $all_post_cats); 
            $registered = $this->get_registered("cats=$all_post_cats_string"); 
            $recipients = array_merge((array)$public, (array)$registered); 
            $this->mail($recipients, $subject, $mailtext); 
        } 
    } // end subscribe2_cron() 
 
    function s2cleaner_task() { 
        $unconfirmed = $this->get_public('0'); 
        if ( empty($unconfirmed) ) { return; } 
        global $wpdb; 
        $sql = "SELECT email FROM $this->public WHERE active='0' AND date < DATE_SUB(CURDATE(), INTERVAL " . $this->clean_interval . " DAY)"; 
        $old_unconfirmed = $wpdb->get_col( $sql ); 
        if ( empty($old_unconfirmed) ) { 
            return; 
        } else { 
            foreach ($old_unconfirmed as $email) { 
                $this->delete($email); 
            } 
        } 
        return; 
    } // end s2cleaner_task() 
 
/** ===== Our constructor ===== */ 
    /** 
    Subscribe2 constructor 
    */ 
    function s2init() { 
        global $wpdb, $wp_version, $wpmu_version; 
        // load the options 
        $this->subscribe2_options = get_option('subscribe2_options'); 
        // if SCRIPT_DEBUG is true, use dev scripts 
        $this->script_debug = ( defined('SCRIPT_DEBUG') && SCRIPT_DEBUG ) ? '' : '.min'; 
 
        // get the WordPress release number for in code version comparisons 
        $tmp = explode('-', $wp_version, 2); 
        $this->wp_release = $tmp[0]; 
 
        // Is this WordPressMU or not? 
        if ( isset($wpmu_version) || strpos($wp_version, 'wordpress-mu') ) { 
            $this->s2_mu = true; 
        } 
        if ( function_exists('is_multisite') && is_multisite() ) { 
            $this->s2_mu = true; 
        } 
 
        // add action to handle WPMU subscriptions and unsubscriptions 
        if ( $this->s2_mu === true ) { 
            require_once(S2PATH . "classes/class-s2-multisite.php"); 
            global $s2class_multisite; 
            $s2class_multisite = new s2_multisite; 
            if ( isset($_GET['s2mu_subscribe']) || isset($_GET['s2mu_unsubscribe']) ) { 
                add_action('init', array(&$s2class_multisite, 'wpmu_subscribe')); 
            } 
        } 
 
        // load our translations 
        add_action('plugins_loaded', array(&$this, 'load_translations')); 
 
        // do we need to install anything? 
        $this->public = $wpdb->prefix . "subscribe2"; 
        if ( $wpdb->get_var($wpdb->prepare("SHOW TABLES LIKE %s", $this->public)) != $this->public ) { $this->install(); } 
        //do we need to upgrade anything? 
        if ( $this->subscribe2_options === false || is_array($this->subscribe2_options) && $this->subscribe2_options['version'] !== S2VERSION ) { 
            add_action('shutdown', array(&$this, 'upgrade')); 
        } 
 
        // add core actions 
        add_filter('cron_schedules', array(&$this, 'add_weekly_sched')); 
        // add actions for automatic subscription based on option settings 
        add_action('register_form', array(&$this, 'register_form')); 
        add_action('user_register', array(&$this, 'register_post')); 
        if ( $this->s2_mu ) { 
            add_action('add_user_to_blog', array(&$s2class_multisite, 'wpmu_add_user'), 10); 
            add_action('remove_user_from_blog', array(&$s2class_multisite, 'wpmu_remove_user'), 10); 
        } 
        // add actions for processing posts based on per-post or cron email settings 
        if ( $this->subscribe2_options['email_freq'] != 'never' ) { 
            add_action('s2_digest_cron', array(&$this, 'subscribe2_cron')); 
        } else { 
            $statuses = apply_filters('s2_post_statuses', array('new', 'draft', 'auto-draft', 'pending')); 
            if ( $this->subscribe2_options['private'] == 'yes' ) { 
                foreach ( $statuses as $status ) { 
                    add_action("{$status}_to_private", array(&$this, 'publish')); 
                } 
            } 
            array_push($statuses, 'private', 'future'); 
            foreach ( $statuses as $status ) { 
                add_action("{$status}_to_publish", array(&$this, 'publish')); 
            } 
        } 
        // add actions for comment subscribers 
        if ( 'no' != $this->subscribe2_options['comment_subs'] ) { 
            if ( 'before' == $this->subscribe2_options['comment_subs'] ) { 
                add_action('comment_form_after_fields', array(&$this, 's2_comment_meta_form')); 
            } else { 
                add_action('comment_form', array(&$this, 's2_comment_meta_form')); 
            } 
            add_action('comment_post', array(&$this, 's2_comment_meta'), 1, 2); 
            add_action('wp_set_comment_status', array(&$this, 'comment_status')); 
        } 
        // add action to display widget if option is enabled 
        if ( '1' == $this->subscribe2_options['widget'] ) { 
            add_action('widgets_init', array(&$this, 'subscribe2_widget')); 
        } 
        // add action to display counter widget if option is enabled 
        if ( '1' == $this->subscribe2_options['counterwidget'] ) { 
            add_action('widgets_init', array(&$this, 'counter_widget')); 
        } 
 
        // add action to 'clean' unconfirmed Public Subscribers 
        if ( $this->clean_interval > 0 ) { 
            add_action('wp_scheduled_delete', array(&$this, 's2cleaner_task')); 
        } 
 
        // Add actions specific to admin or frontend 
        if ( is_admin() ) { 
            // load strings 
            add_action('init', array(&$this, 'load_strings')); 
 
            //add menu, authoring and category admin actions 
            add_action('admin_menu', array(&$this, 'admin_menu')); 
            add_action('admin_menu', array(&$this, 's2_meta_init')); 
            add_action('save_post', array(&$this, 's2_meta_handler')); 
            add_action('create_category', array(&$this, 'new_category')); 
            add_action('delete_category', array(&$this, 'delete_category')); 
 
            // Add filters for Ozh Admin Menu 
            if ( function_exists('wp_ozh_adminmenu') ) { 
                add_filter('ozh_adminmenu_icon_s2_posts', array(&$this, 'ozh_s2_icon')); 
                add_filter('ozh_adminmenu_icon_s2_users', array(&$this, 'ozh_s2_icon')); 
                add_filter('ozh_adminmenu_icon_s2_tools', array(&$this, 'ozh_s2_icon')); 
                add_filter('ozh_adminmenu_icon_s2_settings', array(&$this, 'ozh_s2_icon')); 
            } 
 
            // add write button 
            if ( '1' == $this->subscribe2_options['show_button'] ) { 
                add_action('admin_init', array(&$this, 'button_init')); 
            } 
 
            // add counterwidget css and js 
            if ( '1' == $this->subscribe2_options['counterwidget'] ) { 
                add_action('admin_init', array(&$this, 'widget_s2counter_css_and_js')); 
            } 
 
            // add one-click handlers 
            if ( 'yes' == $this->subscribe2_options['one_click_profile'] ) { 
                add_action( 'show_user_profile', array(&$this, 'one_click_profile_form') ); 
                add_action( 'edit_user_profile', array(&$this, 'one_click_profile_form') ); 
                add_action( 'personal_options_update', array(&$this, 'one_click_profile_form_save') ); 
                add_action( 'edit_user_profile_update', array(&$this, 'one_click_profile_form_save') ); 
            } 
 
            // capture CSV export 
            if ( isset($_POST['s2_admin']) && isset($_POST['csv']) ) { 
                $date = date('Y-m-d'); 
                header("Content-Description: File Transfer"); 
                header("Content-type: application/octet-stream"); 
                header("Content-Disposition: attachment; filename=subscribe2_users_$date.csv"); 
                header("Pragma: no-cache"); 
                header("Expires: 0"); 
                echo $this->prepare_export($_POST['exportcsv']); 
                exit(0); 
            } 
        } else { 
            // load strings later on frontend for polylang plugin compatibility 
            add_action('wp', array(&$this, 'load_strings')); 
 
            if ( isset($_GET['s2']) ) { 
                // someone is confirming a request 
                if ( defined('DOING_S2_CONFIRM') && DOING_S2_CONFIRM ) { return; } 
                define( 'DOING_S2_CONFIRM', true ); 
                add_filter('request', array(&$this, 'query_filter')); 
                add_filter('the_title', array(&$this, 'title_filter')); 
                add_filter('the_content', array(&$this, 'confirm')); 
            } 
 
            // add the frontend filters 
            add_shortcode('subscribe2', array(&$this, 'shortcode')); 
            add_filter('the_content', array(&$this, 'filter'), 10); 
 
            // add actions for other plugins 
            if ( '1' == $this->subscribe2_options['show_meta'] ) { 
                add_action('wp_meta', array(&$this, 'add_minimeta'), 0); 
            } 
 
            // add actions for ajax form if enabled 
            if ( '1' == $this->subscribe2_options['ajax'] ) { 
                add_action('wp_enqueue_scripts', array(&$this, 'add_ajax')); 
                add_action('wp_footer', array(&$this, 'add_s2_ajax')); 
            } 
        } 
    } // end s2init() 
 
    /** 
    PHP5 Constructor 
    Allows dynamic variable setting 
    */ 
    function __construct() { 
        $this->word_wrap = apply_filters('s2_word_wrap', 80); 
        $this->excerpt_length = apply_filters('s2_excerpt_length', 55); 
        $this->site_switching = apply_filters('s2_allow_site_switching', false); 
        $this->clean_interval = apply_filters('s2_clean_interval', 28); 
    } // end __construct() 
 
/** ===== our variables ===== */ 
    // cache variables 
    var $subscribe2_options = array(); 
    var $all_confirmed = ''; 
    var $all_unconfirmed = ''; 
    var $all_registered_id = ''; 
    var $all_registered_email = ''; 
    var $all_authors = ''; 
    var $excluded_cats = ''; 
    var $post_title = ''; 
    var $permalink = ''; 
    var $post_date = ''; 
    var $post_time = ''; 
    var $myname = ''; 
    var $myemail = ''; 
    var $authorname = ''; 
    var $post_cat_names = ''; 
    var $post_tag_names = ''; 
    var $post_count = ''; 
    var $signup_dates = array(); 
    var $filtered = 0; 
    var $preview_email = false; 
 
    // state variables used to affect processing 
    var $s2_mu = false; 
    var $action = ''; 
    var $email = ''; 
    var $message = ''; 
    var $word_wrap; 
    var $excerpt_length; 
    var $site_switching; 
    var $clean_interval; 
 
    // some messages 
    var $please_log_in = ''; 
    var $profile = ''; 
    var $confirmation_sent = ''; 
    var $already_subscribed = ''; 
    var $not_subscribed =''; 
    var $not_an_email = ''; 
    var $barred_domain = ''; 
    var $error = ''; 
    var $mail_sent = ''; 
    var $mail_failed = ''; 
    var $form = ''; 
    var $no_such_email = ''; 
    var $added = ''; 
    var $deleted = ''; 
    var $subscribe = ''; 
    var $unsubscribe = ''; 
    var $confirm_subject = ''; 
    var $options_saved = ''; 
    var $options_reset = ''; 
} // end class subscribe2