PHP Surfer::is_member方法代码示例

 /**
  * get some statistics for one anchor
  *
  * Only articles matching following criteria are returned:
  * - article is visible (active='Y')
  * - article is restricted (active='R'), but the surfer is an authenticated member,
  * or YACS is allowed to show restricted teasers
  * - article is protected (active='N'), but surfer is an associate, and we are not feeding someone
  * - surfer is anonymous or the variant is 'boxes', and article has been officially published
  * - logged surfers are restricted to their own articles, plus published articles
  * - an expiry date has not been defined, or is not yet passed
  *
  * @param the selected anchor (e.g., 'section:12')
  * @param boolean FALSE to include sticky pages, TRUE otherwise
  * @return the resulting ($count, $min_date, $max_date) array
  *
  * @see sections/view.php
  */
 public static function stat_for_anchor($anchor, $without_sticky = FALSE)
 {
     global $context;
     // sanity check
     if (!$anchor) {
         return NULL;
     }
     // restrict the query to addressable content
     $where = Articles::get_sql_where();
     // avoid sticky articles
     if ($without_sticky) {
         $where .= " AND (articles.rank >= 10000)";
     }
     // anonymous surfers and subscribers will see only published articles
     if (!Surfer::is_member()) {
         $where .= " AND NOT ((articles.publish_date is NULL) OR (articles.publish_date <= '0000-00-00'))" . " AND (articles.publish_date < '" . $context['now'] . "')";
         // logged surfers that are non-associates are restricted to their own articles, plus published articles
     } elseif (!Surfer::is_empowered()) {
         $where .= " AND ((articles.create_id=" . Surfer::get_id() . ") OR (NOT ((articles.publish_date is NULL) OR (articles.publish_date <= '0000-00-00'))" . " AND (articles.publish_date < '" . $context['now'] . "')))";
     }
     // only consider live articles
     $where .= " AND ((articles.expiry_date is NULL) " . "OR (articles.expiry_date <= '" . NULL_DATE . "') OR (articles.expiry_date > '" . $context['now'] . "'))";
     // select among available items
     $query = "SELECT COUNT(*) as count, MIN(edit_date) as oldest_date, MAX(edit_date) as newest_date" . " FROM " . SQL::table_name('articles') . " AS articles" . " WHERE (articles.anchor LIKE '" . SQL::escape($anchor) . "') AND (" . $where . ")";
     $output = SQL::query_first($query);
     return $output;
 }

//.........这里部分代码省略.........
             $title = Codes::beautify_title($overlay->get_text('title', $item));
         } else {
             $title = Codes::beautify_title($item['title']);
         }
         // initialize variables
         $prefix = $suffix = $icon = '';
         // flag articles that are dead, or created or updated very recently
         if ($item['expiry_date'] > NULL_DATE && $item['expiry_date'] <= $context['now']) {
             $prefix .= EXPIRED_FLAG;
         }
         // signal articles to be published
         if ($item['publish_date'] <= NULL_DATE || $item['publish_date'] > $context['now']) {
             $prefix .= DRAFT_FLAG;
         }
         // signal restricted and private articles
         if ($item['active'] == 'N') {
             $prefix .= PRIVATE_FLAG;
         } elseif ($item['active'] == 'R') {
             $prefix .= RESTRICTED_FLAG;
         }
         // some details
         $details = array();
         // info on related files --optional
         if ($count = Files::count_for_anchor('article:' . $item['id'], TRUE)) {
             $details[] = sprintf(i18n::ns('%d file', '%d files', $count), $count);
         }
         // info on related comments --mandatory
         if ($count = Comments::count_for_anchor('article:' . $item['id'], FALSE)) {
             $details[] = sprintf(i18n::ns('%d comment', '%d comments', $count), $count);
         }
         // info on related links --optional
         if ($count = Links::count_for_anchor('article:' . $item['id'], TRUE)) {
             $details[] = sprintf(i18n::ns('%d link', '%d links', $count), $count);
         }
         // details
         if (count($details)) {
             $suffix .= ' <span class="details">(' . ucfirst(implode(', ', $details)) . ')</span>';
         }
         // flag popular pages
         if ($item['hits'] > 300) {
             $suffix .= POPULAR_FLAG;
         }
         // last contribution
         if ($item['edit_action']) {
             $action = Anchors::get_action_label($item['edit_action']) . ' ';
         } else {
             $action = i18n::s('edited');
         }
         if ($item['edit_name']) {
             $suffix .= '<br /><span class="details">' . sprintf(i18n::s('%s by %s %s'), $action, Users::get_link($item['edit_name'], $item['edit_address'], $item['edit_id']), Skin::build_date($item['edit_date'])) . '</span>';
         } else {
             $suffix .= '<br /><span class="details">' . $action . ' ' . Skin::build_date($item['edit_date']) . '</span>';
         }
         // flag articles updated recently
         if ($item['create_date'] >= $context['fresh']) {
             $suffix .= NEW_FLAG;
         } elseif ($item['edit_date'] >= $context['fresh']) {
             $suffix .= UPDATED_FLAG;
         }
         // insert overlay data, if any
         if (is_object($overlay)) {
             $suffix .= $overlay->get_text('list', $item, $this->focus);
         }
         // the hovering title
         if ($item['introduction'] && $context['skins_with_details'] == 'Y') {
             $hover = strip_tags(Codes::beautify_introduction($item['introduction']));
         } else {
             $hover = i18n::s('View the page');
         }
         // help members to reference this page
         if (Surfer::is_member()) {
             $hover .= ' [article=' . $item['id'] . ']';
         }
         // add an image if available
         if ($item['thumbnail_url']) {
             $icon = $item['thumbnail_url'];
         } elseif (is_callable(array($anchor, 'get_bullet_url'))) {
             $icon = $anchor->get_bullet_url();
         }
         // format the image
         if ($icon) {
             $icon = Skin::build_link($url, '<img src="' . $icon . '" />', 'basic', $hover);
         }
         // list all components for this item
         if ($odd = !$odd) {
             $class = ' class="odd"';
         } else {
             $class = ' class="even"';
         }
         // use a table to layout the image properly
         if ($icon) {
             $text .= '<div' . $class . '><table class="decorated"><tr><td class="image" style="text-align: center">' . $icon . '</td><td class="content">' . $prefix . Skin::build_link($url, Skin::strip($title, 30), 'basic', $hover) . $suffix . '</td></tr></table></div>';
         } else {
             $text .= '<div' . $class . '>' . $prefix . Skin::build_link($url, Skin::strip($title, 30), 'basic', $hover) . $suffix . '</div>';
         }
     }
     // end of processing
     SQL::free($result);
     return $text;
 }

    $id = $context['arguments'][0];
}
$id = strip_tags($id);
// get the item from the database
$item = Servers::get($id);
// get the related anchor, if any
$anchor = NULL;
if (isset($item['anchor']) && $item['anchor']) {
    $anchor = Anchors::get($item['anchor']);
}
// associates can do what they want
if (Surfer::is_associate()) {
    $permitted = TRUE;
} elseif (is_object($anchor) && !$anchor->is_viewable()) {
    $permitted = FALSE;
} elseif ($item['active'] == 'R' && Surfer::is_member()) {
    $permitted = TRUE;
} elseif ($item['active'] == 'Y') {
    $permitted = TRUE;
} else {
    $permitted = FALSE;
}
// load the skin
load_skin('servers');
// current item
if (isset($item['id'])) {
    $context['current_item'] = 'server:' . $item['id'];
}
// the path to this page
$context['path_bar'] = array('servers/' => i18n::s('Servers'));
// the title of the page

 /**
  * list sections
  *
  * @param resource the SQL result
  * @return string the rendered text
  *
  * @see layouts/layout.php
  **/
 function layout($result)
 {
     global $context;
     // we return some text
     $text = '';
     // empty list
     if (!($delta = SQL::count($result))) {
         return $text;
     }
     // process all items in the list
     $count = 0;
     $items = array();
     while ($item = SQL::fetch($result)) {
         // the url to view this item
         $url = Sections::get_permalink($item);
         // initialize variables
         $prefix = $label = $suffix = '';
         // flag sections that are draft or dead
         if ($item['activation_date'] >= $context['now']) {
             $prefix .= DRAFT_FLAG;
         } elseif ($item['expiry_date'] > NULL_DATE && $item['expiry_date'] <= $context['now']) {
             $prefix .= EXPIRED_FLAG;
         }
         // signal restricted and private sections
         if ($item['active'] == 'N') {
             $prefix .= PRIVATE_FLAG;
         } elseif ($item['active'] == 'R') {
             $prefix .= RESTRICTED_FLAG;
         }
         // flag items updated recently
         if ($item['create_date'] >= $context['fresh']) {
             $suffix .= NEW_FLAG;
         } elseif ($item['edit_date'] >= $context['fresh']) {
             $suffix .= UPDATED_FLAG;
         }
         //			// start the label with family, if any
         //			if($item['family'])
         //				$label = ucfirst(Skin::strip($item['family'], 30)).' - ';
         // use the title to label the link
         $label .= ucfirst(Skin::strip($item['title'], 30));
         // the hovering title
         if ($item['introduction'] && $context['skins_with_details'] == 'Y') {
             $hover = strip_tags(Codes::beautify_introduction($item['introduction']));
         } else {
             $hover = i18n::s('View the section');
         }
         // help members to reference this page
         if (Surfer::is_member()) {
             $hover .= ' [section=' . $item['id'] . ']';
         }
         // list all components for this item
         $items[$url] = array($prefix, $label, $suffix, 'basic', NULL, $hover);
         // limit to one page of results
         if (++$count >= COMPACT_LIST_SIZE - 1) {
             break;
         }
     }
     // end of processing
     SQL::free($result);
     // turn this to some text
     $text .= Skin::build_list($items, 'comma');
     // some indications on the number of connections
     if (($delta -= $count) > 0) {
         $text .= ', ...';
     }
     return $text;
 }

 /**
  * list sections as topics in a forum
  *
  * @param resource the SQL result
  * @return string the rendered text
  **/
 function layout($result)
 {
     global $context;
     // empty list
     if (!SQL::count($result)) {
         $output = array();
         return $output;
     }
     // layout in a table
     $text = Skin::table_prefix('wide');
     // 'even' is used for title rows, 'odd' for detail rows
     $class_title = 'odd';
     $class_detail = 'even';
     // build a list of sections
     $family = '';
     include_once $context['path_to_root'] . 'comments/comments.php';
     include_once $context['path_to_root'] . 'links/links.php';
     while ($item = SQL::fetch($result)) {
         // change the family
         if ($item['family'] != $family) {
             $family = $item['family'];
             // show the family
             $text .= Skin::table_suffix() . '<h2><span>' . $family . '&nbsp;</span></h2>' . "\n" . Skin::table_prefix('wide');
         }
         // get the related overlay, if any
         $overlay = Overlay::load($item, 'section:' . $item['id']);
         // get the main anchor
         $anchor = Anchors::get($item['anchor']);
         // reset everything
         $prefix = $label = $suffix = $icon = '';
         // signal restricted and private sections
         if ($item['active'] == 'N') {
             $prefix .= PRIVATE_FLAG;
         } elseif ($item['active'] == 'R') {
             $prefix .= RESTRICTED_FLAG;
         }
         // indicate the id in the hovering popup
         $hover = i18n::s('View the section');
         if (Surfer::is_member()) {
             $hover .= ' [section=' . $item['id'] . ']';
         }
         // the url to view this item
         $url = Sections::get_permalink($item);
         // use the title to label the link
         if (is_object($overlay)) {
             $title = Codes::beautify_title($overlay->get_text('title', $item));
         } else {
             $title = Codes::beautify_title($item['title']);
         }
         // use the title as a link to the page
         $title =& Skin::build_link($url, $title, 'basic', $hover);
         // flag sections updated recently
         if ($item['expiry_date'] > NULL_DATE && $item['expiry_date'] <= $context['now']) {
             $suffix = EXPIRED_FLAG . ' ';
         } elseif ($item['create_date'] >= $context['fresh']) {
             $suffix = NEW_FLAG . ' ';
         } elseif ($item['edit_date'] >= $context['fresh']) {
             $suffix = UPDATED_FLAG . ' ';
         }
         // this is another row of the output
         $text .= '<tr class="' . $class_title . '"><th>' . $prefix . $title . $suffix . '</th><th>' . i18n::s('Poster') . '</th><th>' . i18n::s('Messages') . '</th><th>' . i18n::s('Last active') . '</th></tr>' . "\n";
         $count = 1;
         // get last posts for this board --avoid sticky pages
         if (preg_match('/\\barticles_by_([a-z_]+)\\b/i', $item['options'], $matches)) {
             $order = $matches[1];
         } else {
             $order = 'edition';
         }
         if ($articles =& Articles::list_for_anchor_by($order, 'section:' . $item['id'], 0, 5, 'raw', TRUE)) {
             foreach ($articles as $id => $article) {
                 // get the related overlay, if any
                 $article_overlay = Overlay::load($article, 'article:' . $id);
                 // flag articles updated recently
                 if ($article['expiry_date'] > NULL_DATE && $article['expiry_date'] <= $context['now']) {
                     $flag = EXPIRED_FLAG . ' ';
                 } elseif ($article['create_date'] >= $context['fresh']) {
                     $flag = NEW_FLAG . ' ';
                 } elseif ($article['edit_date'] >= $context['fresh']) {
                     $flag = UPDATED_FLAG . ' ';
                 } else {
                     $flag = '';
                 }
                 // use the title to label the link
                 if (is_object($article_overlay)) {
                     $title = Codes::beautify_title($article_overlay->get_text('title', $article));
                 } else {
                     $title = Codes::beautify_title($article['title']);
                 }
                 // title
                 $title = Skin::build_link(Articles::get_permalink($article), $title, 'article');
                 // poster
                 $poster = Users::get_link($article['create_name'], $article['create_address'], $article['create_id']);
                 // comments
                 $comments = Comments::count_for_anchor('article:' . $article['id']);
//.........这里部分代码省略.........

 /**
  * get some statistics
  *
  * @return the resulting ($count, $min_date, $max_date) array
  */
 public static function stat()
 {
     global $context;
     // select among active and restricted items
     $where = "servers.active='Y'";
     if (Surfer::is_member()) {
         $where .= " OR servers.active='R'";
     }
     if (Surfer::is_associate()) {
         $where .= " OR servers.active='N'";
     }
     // select among available items
     $query = "SELECT COUNT(*) as count, MIN(edit_date) as oldest_date, MAX(edit_date) as newest_date" . ' FROM ' . SQL::table_name('servers') . ' AS servers' . ' WHERE (' . $where . ')';
     $output = SQL::query_first($query);
     return $output;
 }

 // the rank
 if ($cur_article->is_owned() || Surfer::is_associate()) {
     // the default value
     if (!isset($item['rank'])) {
         $item['rank'] = 10000;
     }
     $label = i18n::s('Rank');
     $input = '<input type="text" name="rank" id="rank" size="10" value="' . encode_field($item['rank']) . '" maxlength="255" />';
     $hint = sprintf(i18n::s('For %s pages; regular pages are ranked at %s.'), '<a href="#" onclick="$(\'#rank\').value=10; return false;">' . i18n::s('sticky') . '</a>', '<a href="#" onclick="$(\'#rank\').value=10000; return false;">' . i18n::s('10000') . '</a>');
     $fields[] = array($label, $input, $hint);
 }
 // the publication date
 $label = i18n::s('Publication date');
 if (isset($item['publish_date']) && $item['publish_date'] > NULL_DATE) {
     $input = Surfer::from_GMT($item['publish_date']);
 } elseif (isset($item['id']) && (Surfer::is_associate() || Surfer::is_member() && is_object($anchor) && $anchor->is_assigned())) {
     Skin::define_img('ARTICLES_PUBLISH_IMG', 'articles/publish.gif');
     $input = Skin::build_link(Articles::get_url($item['id'], 'publish'), ARTICLES_PUBLISH_IMG . i18n::s('Publish'), 'basic');
 } else {
     Skin::define_img('ARTICLES_UNPUBLISH_IMG', 'articles/unpublish.gif');
     $input = ARTICLES_UNPUBLISH_IMG . i18n::s('not published');
 }
 $fields[] = array($label, $input);
 // the expiry date
 $label = i18n::s('Expiry date');
 if (isset($item['expiry_date']) && $item['expiry_date'] > NULL_DATE) {
     $input = Surfer::from_GMT($item['expiry_date']);
 } else {
     $input = i18n::s('never');
 }
 $fields[] = array($label, $input);

        if ($text =& Articles::list_by('publication', $offset, $items_per_page)) {
            // we have an array to format
            if (is_array($text)) {
                $text =& Skin::build_list($text, 'decorated');
            }
        }
        // cache this to speed subsequent queries
        Cache::put($cache_id, $text, 'articles');
    }
    $context['text'] .= $text;
}
//
// extra content
//
// add a page
if (Surfer::is_associate() || Surfer::is_member() && (!isset($context['users_without_submission']) || $context['users_without_submission'] != 'Y')) {
    $context['page_tools'][] = Skin::build_link('articles/edit.php', i18n::s('Add a page'), 'basic');
}
// other commands
if (Surfer::is_associate()) {
    $context['page_tools'][] = Skin::build_link('articles/review.php', i18n::s('Review queue'), 'basic');
    $context['page_tools'][] = Skin::build_link('help/populate.php', i18n::s('Content Assistant'));
    $context['page_tools'][] = Skin::build_link('articles/import.php', i18n::s('Import articles'), 'basic');
    $context['page_tools'][] = Skin::build_link('articles/check.php', i18n::s('Maintenance'), 'basic');
}
// side bar with a rss feed, if this server is well populated
if ($stats['count'] > $items_per_page) {
    $context['components']['channels'] = Skin::build_box(i18n::s('Information channels'), Skin::build_link(Feeds::get_url('rss'), i18n::s('Recent pages'), 'xml') . BR . Skin::build_link(Feeds::get_url('articles'), i18n::s('Full content'), 'xml'), 'channels');
}
// page extra information
$cache_id = 'articles/index.php#extra';

 /**
  * list sections
  *
  * @param resource the SQL result
  * @return string the rendered text
  *
  * @see layouts/layout.php
  **/
 function layout($result)
 {
     global $context;
     // empty list
     if (!SQL::count($result)) {
         $output = array();
         return $output;
     }
     // we return an array of ($url => $attributes)
     $items = array();
     // process all items in the list
     while ($item = SQL::fetch($result)) {
         // get the related overlay, if any
         $overlay = Overlay::load($item, 'section:' . $item['id']);
         // the url to view this item
         $url = Sections::get_permalink($item);
         // initialize variables
         $prefix = $label = $suffix = '';
         // flag sections that are draft or dead
         if ($item['activation_date'] >= $context['now']) {
             $prefix .= DRAFT_FLAG;
         } elseif ($item['expiry_date'] > NULL_DATE && $item['expiry_date'] <= $context['now']) {
             $prefix .= EXPIRED_FLAG;
         }
         // signal restricted and private sections
         if ($item['active'] == 'N') {
             $prefix .= PRIVATE_FLAG;
         } elseif ($item['active'] == 'R') {
             $prefix .= RESTRICTED_FLAG;
         }
         // flag items updated recently
         if ($item['create_date'] >= $context['fresh']) {
             $suffix .= NEW_FLAG;
         } elseif ($item['edit_date'] >= $context['fresh']) {
             $suffix .= UPDATED_FLAG;
         }
         //			// start the label with family, if any
         //			if($item['family'])
         //				$label = ucfirst(Skin::strip($item['family'], 30)).' - ';
         // use the title to label the link
         if (is_object($overlay)) {
             $label = ucfirst(Codes::beautify_title($overlay->get_text('title', $item)));
         } else {
             $label .= ucfirst(Skin::strip($item['index_title'], 30));
         }
         // the hovering title
         if ($item['introduction'] && $context['skins_with_details'] == 'Y') {
             $hover = strip_tags(Codes::beautify_introduction($item['introduction']));
         } else {
             $hover = i18n::s('View the section');
         }
         // help members to reference this page
         if (Surfer::is_member()) {
             $hover .= ' [section=' . $item['id'] . ']';
         }
         // list all components for this item
         $items[$url] = array($prefix, $label, $suffix, 'basic', NULL, $hover);
     }
     // end of processing
     SQL::free($result);
     return $items;
 }

 /**
  * can this surfer mail other users?
  *
  * @return TRUE if alowed, FALSE otherwise
  */
 public static function may_mail()
 {
     global $context;
     // email has to be activated
     if (!isset($context['with_email'])) {
         return FALSE;
     }
     if ($context['with_email'] != 'Y') {
         return FALSE;
     }
     // only members can send e-mail
     if (!Surfer::is_member()) {
         return FALSE;
     }
     return Surfer::may_contact();
 }

 /**
  * list articles
  *
  * @param resource the SQL result
  * @return array
  *
  * @see layouts/layout.php
  **/
 function layout($result)
 {
     global $context;
     // we return an array of ($url => $attributes)
     $items = array();
     // empty list
     if (!SQL::count($result)) {
         return $items;
     }
     // process all items in the list
     include_once $context['path_to_root'] . 'comments/comments.php';
     while ($item = SQL::fetch($result)) {
         // get the related overlay
         $overlay = Overlay::load($item, 'article:' . $item['id']);
         // get the anchor
         $anchor = Anchors::get($item['anchor']);
         // the url to view this item
         $url = Articles::get_permalink($item);
         // build a title
         if (is_object($overlay)) {
             $title = Codes::beautify_title($overlay->get_text('title', $item));
         } else {
             $title = Codes::beautify_title($item['title']);
         }
         // initialize variables
         $prefix = $suffix = '';
         // flag articles that are dead, or created or updated very recently
         if ($item['expiry_date'] > NULL_DATE && $item['expiry_date'] <= $context['now']) {
             $prefix .= EXPIRED_FLAG;
         }
         // signal articles to be published
         if ($item['publish_date'] <= NULL_DATE || $item['publish_date'] > $context['now']) {
             $prefix .= DRAFT_FLAG;
         }
         // signal restricted and private articles
         if ($item['active'] == 'N') {
             $prefix .= PRIVATE_FLAG;
         } elseif ($item['active'] == 'R') {
             $prefix .= RESTRICTED_FLAG;
         }
         // count related comments, if any
         if ($count = Comments::count_for_anchor('article:' . $item['id'], TRUE)) {
             $suffix .= ' (' . $count . ')';
         }
         // flag articles updated recently
         if ($item['create_date'] >= $context['fresh']) {
             $suffix .= NEW_FLAG;
         } elseif ($item['edit_date'] >= $context['fresh']) {
             $suffix .= UPDATED_FLAG;
         }
         // the hovering title
         if ($item['introduction'] && $context['skins_with_details'] == 'Y') {
             $hover = strip_tags(Codes::beautify_introduction($item['introduction']));
         } else {
             $hover = i18n::s('View the page');
         }
         // help members to reference this page
         if (Surfer::is_member()) {
             $hover .= ' [article=' . $item['id'] . ']';
         }
         // list all components for this item
         $items[$url] = array($prefix, Skin::strip($title, 30), $suffix, 'basic', NULL, $hover);
     }
     // end of processing
     SQL::free($result);
     return $items;
 }

 /**
  * post a new file or an updated file
  *
  * This function populates the error context, where applicable.
  *
  * @param array an array of fields
  * @param string to support editors -- see files/edit.php
  * @return the id of the new file, or FALSE on error
  *
  * @see agents/messages.php
  * @see files/author.php
  * @see files/edit.php
  **/
 public static function post(&$fields)
 {
     global $context;
     // no anchor reference
     if (!isset($fields['anchor']) || !$fields['anchor'] || !($anchor = Anchors::get($fields['anchor']))) {
         Logger::error(i18n::s('No anchor has been found.'));
         return FALSE;
     }
     // protect from hackers
     if (isset($fields['icon_url'])) {
         $fields['icon_url'] = encode_link($fields['icon_url']);
     }
     if (isset($fields['thumbnail_url'])) {
         $fields['thumbnail_url'] = encode_link($fields['thumbnail_url']);
     }
     // protect access from anonymous users
     if (!isset($fields['active_set'])) {
         $fields['active_set'] = 'Y';
     }
     // cascade anchor access rights
     $fields['active'] = $anchor->ceil_rights($fields['active_set']);
     // set default values for this editor
     Surfer::check_default_editor($fields);
     // reinforce date formats
     if (!isset($fields['create_date']) || $fields['create_date'] <= NULL_DATE) {
         $fields['create_date'] = $fields['edit_date'];
     }
     // make the file name searchable on initial post
     if (!isset($fields['id']) && !isset($fields['keywords']) && isset($fields['file_name']) && $fields['file_name'] != 'none') {
         $fields['keywords'] = ' ' . str_replace(array('%20', '_', '.', '-'), ' ', $fields['file_name']);
     }
     // columns updated
     $query = array();
     // update an existing record
     if (isset($fields['id'])) {
         // id cannot be empty
         if (!isset($fields['id']) || !is_numeric($fields['id'])) {
             Logger::error(i18n::s('No item has the provided id.'));
             return FALSE;
         }
         // an actual upload has taken place --change modification date and reset detach data
         if (isset($fields['file_name']) && $fields['file_name'] != 'none') {
             $query[] = "assign_address=''";
             $query[] = "assign_date=''";
             $query[] = "assign_id=''";
             $query[] = "assign_name=''";
             $query[] = "create_address='" . SQL::escape($fields['edit_address']) . "'";
             $query[] = "create_date='" . SQL::escape($fields['edit_date']) . "'";
             $query[] = "create_id=" . SQL::escape($fields['edit_id']);
             $query[] = "create_name='" . SQL::escape($fields['edit_name']) . "'";
             $query[] = "edit_address='" . SQL::escape($fields['edit_address']) . "'";
             $query[] = "edit_action='file:update'";
             $query[] = "edit_date='" . SQL::escape($fields['edit_date']) . "'";
             $query[] = "edit_id=" . SQL::escape($fields['edit_id']);
             $query[] = "edit_name='" . SQL::escape($fields['edit_name']) . "'";
             $query[] = "file_name='" . SQL::escape($fields['file_name']) . "'";
             $query[] = "file_size='" . SQL::escape($fields['file_size']) . "'";
         }
         // fields that are visible only to people allowed to update a file
         if (Surfer::is_member()) {
             $query[] = "active='" . SQL::escape($fields['active']) . "'";
             $query[] = "active_set='" . SQL::escape($fields['active_set']) . "'";
             $query[] = "icon_url='" . SQL::escape(isset($fields['icon_url']) ? $fields['icon_url'] : '') . "'";
             $query[] = "thumbnail_url='" . SQL::escape(isset($fields['thumbnail_url']) ? $fields['thumbnail_url'] : '') . "'";
         }
         // regular fields
         $query[] = "alternate_href='" . SQL::escape(isset($fields['alternate_href']) ? $fields['alternate_href'] : '') . "'";
         $query[] = "behaviors='" . SQL::escape(isset($fields['behaviors']) ? $fields['behaviors'] : '') . "'";
         if (isset($fields['description'])) {
             $query[] = "description='" . SQL::escape($fields['description']) . "'";
         }
         $query[] = "overlay='" . SQL::escape(isset($fields['overlay']) ? $fields['overlay'] : '') . "'";
         $query[] = "overlay_id='" . SQL::escape(isset($fields['overlay_id']) ? $fields['overlay_id'] : '') . "'";
         $query[] = "file_href='" . SQL::escape(isset($fields['file_href']) ? $fields['file_href'] : '') . "'";
         $query[] = "keywords='" . SQL::escape(isset($fields['keywords']) ? $fields['keywords'] : '') . "'";
         $query[] = "rank='" . SQL::escape(isset($fields['rank']) ? $fields['rank'] : '10000') . "'";
         $query[] = "source='" . SQL::escape(isset($fields['source']) ? $fields['source'] : '') . "'";
         $query[] = "title='" . SQL::escape(isset($fields['title']) ? $fields['title'] : '') . "'";
         // build the full query
         $query = "UPDATE " . SQL::table_name('files') . " SET " . join(', ', $query) . " WHERE id = " . SQL::escape($fields['id']);
         // actual insert
         if (SQL::query($query) === FALSE) {
             return FALSE;
         }
         // insert a new record
     } elseif (isset($fields['file_name']) && $fields['file_name'] && isset($fields['file_size']) && $fields['file_size']) {
         $query[] = "active='" . SQL::escape($fields['active']) . "'";
//.........这里部分代码省略.........

    $anchor = Anchors::get($item['anchor']);
}
// the anchor has to be viewable by this surfer
if (!is_object($anchor) || $anchor->is_viewable()) {
    $permitted = TRUE;
} else {
    $permitted = FALSE;
}
// nothing to change
if (!isset($item['id'])) {
    $editable = FALSE;
} elseif (Surfer::is_associate() || is_object($anchor) && $anchor->is_assigned()) {
    $editable = TRUE;
} elseif (Surfer::is($item['edit_id'])) {
    $editable = TRUE;
} elseif (Surfer::is_member() && (!isset($context['users_without_file_overloads']) || $context['users_without_file_overloads'] != 'Y')) {
    $editable = TRUE;
} else {
    $editable = FALSE;
}
// load the skin, maybe with a variant
load_skin('images', $anchor);
// clear the tab we are in, if any
if (is_object($anchor)) {
    $context['current_focus'] = $anchor->get_focus();
}
// current item
if (isset($item['id'])) {
    $context['current_item'] = 'image:' . $item['id'];
}
// the path to this page

 /**
  * build linked tags
  *
  * @param string the full list of tags
  * @return string HTML tags to be put in the resulting page
  */
 public static function &build_tags($tags)
 {
     global $context;
     $text = '';
     // list existing tags
     $tags = explode(',', $tags);
     foreach ($tags as $tag) {
         if (!($tag = trim($tag))) {
             continue;
         }
         if ($category = Categories::get_by_keyword($tag)) {
             // get category visibility and check surfer rights
             $active = $category['active'];
             if ($active == 'Y' || $active == 'R' && Surfer::is_member() || $active == 'N' && Surfer::is_associate()) {
                 // add background color to distinguish this category against others
                 if (isset($category['background_color']) && $category['background_color']) {
                     $tag = '<span style="background-color: ' . $category['background_color'] . '; padding: 0 3px 0 3px;">' . $tag . '</span>';
                 }
                 $text .= Skin::build_link(Categories::get_permalink($category), $tag, 'basic') . ' ';
             } else {
                 // do not show the tag for this category
                 $text .= '';
             }
         } else {
             $text .= $tag . ' ';
         }
     }
     $text = rtrim($text, ' ');
     // a link to add a tag
     return $text;
 }

}
$id = strip_tags($id);
// get the item from the database
$item = Categories::get($id);
// get the related anchor, if any
$anchor = NULL;
if (isset($item['anchor']) && $item['anchor']) {
    $anchor = Anchors::get($item['anchor']);
}
// get the related overlay, if any
$overlay = NULL;
if (isset($item['overlay'])) {
    $overlay = Overlay::load($item, 'category:' . $item['id']);
}
// associates and authenticated editors can do what they want
if (Surfer::is_associate() || Surfer::is_member() && is_object($anchor) && $anchor->is_assigned()) {
    $permitted = TRUE;
} else {
    $permitted = FALSE;
}
// load the skin
load_skin('categories');
// the path to this page
if (is_object($anchor) && $anchor->is_viewable()) {
    $context['path_bar'] = $anchor->get_path_bar();
} else {
    $context['path_bar'] = array('categories/' => i18n::s('Categories'));
}
if (isset($item['id'])) {
    $context['path_bar'] = array_merge($context['path_bar'], array(Categories::get_permalink($item) => $item['title']));
}