cfg = new PHPFSPOT_CFG;
/* verify config settings */
if($this->check_config_options()) {
exit(1);
}
/* set application name and version information */
$this->cfg->product = "phpfspot";
$this->cfg->version = "1.7";
$this->cfg->db_version = 2;
$this->sort_orders= array(
'date_asc' => 'Date ↑',
'date_desc' => 'Date ↓',
'name_asc' => 'Name ↑',
'name_desc' => 'Name ↓',
'tags_asc' => 'Tags ↑',
'tags_desc' => 'Tags ↓',
);
/* Check necessary requirements */
if(!$this->check_requirements()) {
exit(1);
}
/******* Opening F-Spot's sqlite database *********/
/* Check if database file exists and is readable */
if(!file_exists($this->cfg->fspot_db) || !is_readable($this->cfg->fspot_db)) {
print "Error: ". $this->cfg->fspot_db ." does not exist or is not readable for user ". $this->getuid() .".\n";
exit(1);
}
/* Check if database file is writeable */
if(!is_writeable($this->cfg->fspot_db)) {
print "Error: ". $this->cfg->fspot_db ." is not writeable for user ". $this->getuid() .".\n";
print "Please fix permissions so phpfspot can create indices within the F-Spot database to"
." speed up some database operations.\n";
exit(1);
}
/* open the database */
$this->db = new PHPFSPOT_DB($this, $this->cfg->fspot_db);
/* change sqlite temp directory, if requested */
if(isset($this->cfg->sqlite_temp_dir)) {
$this->db->db_exec("
PRAGMA
temp_store_directory = '". $this->cfg->sqlite_temp_dir ."'
");
}
/* get F-Spot database version */
$this->dbver = $this->getFspotDBVersion();
if(!is_writeable($this->cfg->base_path ."/templates_c")) {
print $this->cfg->base_path ."/templates_c: directory is not writeable for user ". $this->getuid() ."\n";
exit(1);
}
if(!is_writeable($this->cfg->thumb_path)) {
print $this->cfg->thumb_path .": directory is not writeable for user ". $this->getuid() ."\n";
exit(1);
}
/******* Opening phpfspot's sqlite database *********/
/* Check if directory where the database file is stored is writeable */
if(!is_writeable(dirname($this->cfg->phpfspot_db))) {
print "Error: ". dirname($this->cfg->phpfspot_db) .": directory is not writeable for user ". $this->getuid() .".\n";
print "Please fix permissions so phpfspot can create its own sqlite database to store some settings.\n";
exit(1);
}
/* Check if database file is writeable */
if(file_exists($this->cfg->phpfspot_db) && !is_writeable($this->cfg->phpfspot_db)) {
print "Error: ". $this->cfg->phpfspot_db ." is not writeable for user ". $this->getuid() .".\n";
print "Please fix permissions so phpfspot can create its own sqlite database to store some settings.\n";
exit(1);
}
/* open the database */
$this->cfg_db = new PHPFSPOT_DB($this, $this->cfg->phpfspot_db);
/* change sqlite temp directory, if requested */
if(isset($this->cfg->sqlite_temp_dir)) {
$this->cfg_db->db_exec("
PRAGMA
temp_store_directory = '". $this->cfg->sqlite_temp_dir ."'
");
}
/* Check if some tables need to be created */
$this->check_phpfspot_db();
/* overload Smarty class with our own template handler */
require_once "phpfspot_tmpl.php";
$this->tmpl = new PHPFSPOT_TMPL();
$this->tmpl->assign('web_path', $this->cfg->web_path);
/* Starting with F-Spot 0.4.2, the rating-feature was available */
if($this->dbver > 10) {
$this->tmpl->assign('has_rating', true);
$this->sort_orders = array_merge($this->sort_orders, array(
'rate_asc' => 'Rate ↑',
'rate_desc' => 'Rate ↓',
));
}
/* check if all necessary indices exist */
$this->checkDbIndices();
/* if session is not yet started, do it now */
if(session_id() == "")
session_start();
if(!isset($_SESSION['tag_condition']))
$_SESSION['tag_condition'] = 'or';
/* if sort-order has not been set yet, get the one specified in the config */
if(!isset($_SESSION['sort_order']))
$_SESSION['sort_order'] = $this->cfg->sort_order;
if(!isset($_SESSION['searchfor_tag']))
$_SESSION['searchfor_tag'] = '';
// if begin_with is still set but thumbs_per_page is now 0, unset it
if(isset($_SESSION['begin_with']) && $this->cfg->thumbs_per_page == 0)
unset($_SESSION['begin_with']);
// if user-friendly-url's are enabled, set also a flag for the template handler
if($this->is_user_friendly_url()) {
$this->tmpl->assign('user_friendly_url', 'true');
}
} // __construct()
public function __destruct()
{
} // __destruct()
/**
* show - generate html output
*
* this function can be called after the constructor has
* prepared everyhing. it will load the index.tpl smarty
* template. if necessary it will registere pre-selects
* (photo index, photo, tag search, date search) into
* users session.
*/
public function show()
{
$this->tmpl->assign('searchfor_tag', $_SESSION['searchfor_tag']);
$this->tmpl->assign('page_title', $this->cfg->page_title);
$this->tmpl->assign('current_condition', $_SESSION['tag_condition']);
$this->tmpl->assign('template_path', 'themes/'. $this->cfg->theme_name);
/* parse URL */
if($this->is_user_friendly_url()) {
$content = $this->parse_user_friendly_url($_SERVER['REQUEST_URI']);
}
if(isset($_GET['mode'])) {
$_SESSION['start_action'] = $_GET['mode'];
switch($_GET['mode']) {
case 'showpi':
if(isset($_GET['tags'])) {
$_SESSION['selected_tags'] = $this->extractTags($_GET['tags']);
}
if(isset($_GET['from_date']) && $this->isValidDate($_GET['from_date'])) {
$_SESSION['from_date'] = strtotime($_GET['from_date'] ." 00:00:00");
}
if(isset($_GET['to_date']) && $this->isValidDate($_GET['to_date'])) {
$_SESSION['to_date'] = strtotime($_GET['to_date'] ." 23:59:59");
}
break;
case 'showp':
if(isset($_GET['tags'])) {
$_SESSION['selected_tags'] = $this->extractTags($_GET['tags']);
$_SESSION['start_action'] = 'showp';
}
if(isset($_GET['id']) && is_numeric($_GET['id'])) {
if($_SESSION['current_photo'] != $_GET['id'])
unset($_SESSION['current_version']);
$_SESSION['current_photo'] = $_GET['id'];
$_SESSION['start_action'] = 'showp';
}
if(isset($_GET['from_date']) && $this->isValidDate($_GET['from_date'])) {
$_SESSION['from_date'] = strtotime($_GET['from_date'] ." 00:00:00");
}
if(isset($_GET['to_date']) && $this->isValidDate($_GET['to_date'])) {
$_SESSION['to_date'] = strtotime($_GET['to_date'] ." 23:59:59");
}
break;
case 'export':
/* fetch export template */
print $this->tmpl->fetch("export.tpl");
/* no further execution necessary. */
return;
break;
case 'slideshow':
/* fetch slideshow template */
print $this->tmpl->show("slideshow.tpl");
/* no further execution necessary. */
return;
break;
case 'rss':
if(isset($_GET['tags'])) {
$_SESSION['selected_tags'] = $this->extractTags($_GET['tags']);
}
if(isset($_GET['from_date']) && $this->isValidDate($_GET['from_date'])) {
$_SESSION['from_date'] = strtotime($_GET['from_date'] ." 00:00:00");
}
if(isset($_GET['to_date']) && $this->isValidDate($_GET['to_date'])) {
$_SESSION['to_date'] = strtotime($_GET['to_date'] ." 23:59:59");
}
$this->getRSSFeed();
return;
break;
}
}
/* if date-search variables are registered in the session, set the check
for "consider date-range" in the html output
*/
if(isset($_SESSION['from_date']) && isset($_SESSION['to_date']))
$this->tmpl->assign('date_search_enabled', true);
/* if rate-search variables are registered in the session, set the check
for "consider rate-range" in the html output
*/
if(isset($_SESSION['rate_from']) && isset($_SESSION['rate_to'])) {
$this->tmpl->assign('rate_search_enabled', true);
}
$this->tmpl->register_function("sort_select_list", array(&$this, "smarty_sort_select_list"), false);
$this->tmpl->assign('search_from_date', $this->get_date_text_field('from'));
$this->tmpl->assign('search_to_date', $this->get_date_text_field('to'));
$this->tmpl->assign('preset_selected_tags', $this->getSelectedTags());
$this->tmpl->assign('preset_available_tags', $this->getAvailableTags());
$this->tmpl->assign('rate_search', $this->get_rate_search());
/* if no site-content has been set yet... */
if(!isset($content)) {
/* if tags are already selected, we can immediately display photo-index */
if((isset($_SESSION['selected_tags']) && !empty($_SESSION['selected_tags']) &&
isset($_SESSION['start_action']) && $_SESSION['start_action'] != 'showp') ||
(isset($_SESSION['start_action']) && $_SESSION['start_action'] == 'showpi'))
$this->tmpl->assign('initial_content', $this->showPhotoIndex());
else {
/* if a photo is already selected, we can immediately display single-photo */
if(isset($_SESSION['current_photo']) && !empty($_SESSION['current_photo']))
$this->tmpl->assign('initial_content', $this->showPhoto($_SESSION['current_photo']));
else {
/* ok, then let us show the welcome page... */
$this->tmpl->assign('initial_content', $this->tmpl->fetch('welcome.tpl'));
}
}
}
else
$this->tmpl->assign('initial_content', $content);
$this->tmpl->show("index.tpl");
} // show()
/**
* get_tags - grab all tags of f-spot's database
*
* this function will get all available tags from
* the f-spot database and store them within two
* arrays within this class for later usage. in
* fact, if the user requests (hide_tags) it will
* opt-out some of them.
*
* this function is getting called once by show()
*/
private function get_tags()
{
$this->avail_tags = Array();
$count = 0;
/* if show_tags has been set in the configuration (only show photos
which are tagged by these tags) they following will take care,
that only these other tags are displayed where the photo is also
tagged with one of show_tags.
*/
if(isset($this->cfg->show_tags) && !empty($this->cfg->show_tags)) {
$query_str="
SELECT
DISTINCT t1.id as id, t1.name as name
FROM
photo_tags pt1
INNER JOIN photo_tags
pt2 ON pt1.photo_id=pt2.photo_id
INNER JOIN tags t1
ON t1.id=pt1.tag_id
INNER JOIN tags t2
ON t2.id=pt2.tag_id
WHERE
t2.name IN ('".implode("','",$this->cfg->show_tags)."')
ORDER BY
t1.sort_priority ASC";
$result = $this->db->db_query($query_str);
}
else
{
$result = $this->db->db_query("
SELECT id,name
FROM tags
ORDER BY sort_priority ASC
");
}
while($row = $this->db->db_fetch_object($result)) {
$tag_id = $row['id'];
$tag_name = $row['name'];
/* if the user has specified to ignore this tag in phpfspot's
configuration, ignore it here so it does not get added to
the tag list.
*/
if(in_array($row['name'], $this->cfg->hide_tags))
continue;
/* if you include the following if-clause and the user has specified
to only show certain tags which are specified in phpfspot's
configuration, ignore all others so they will not be added to the
tag list.
if(isset($this->cfg->show_tags) && !empty($this->cfg->show_tags) &&
!in_array($row['name'], $this->cfg->show_tags))
continue;
*/
$this->tags[$tag_id] = $tag_name;
$this->avail_tags[$count] = $tag_id;
$count++;
}
} // get_tags()
/**
* get all photo details from F-Spot database
*
* this function queries the F-Spot database for all available
* details of the requested photo. It returns them as a object.
*
* Furthermore it takes care of the photo version to be requested.
* If photo version is not yet, it queries information for the
* original photo.
*
* @param integer $idx
* @return object|null
*/
public function get_photo_details($idx, $version_idx = NULL)
{
/* ~ F-Spot version 0.3.x */
if($this->dbver < 9) {
$query_str = "
SELECT p.id, p.name, p.time, p.directory_path, p.description
FROM photos p
";
}
else {
/* till F-Spot version 0.4.1 */
if($this->dbver < 11) {
$query_str = "
SELECT p.id, p.uri, p.time, p.description
FROM photos p
";
}
else {
/* rating value got introduced */
$query_str = "
SELECT p.id, p.uri, p.time, p.description, p.rating
FROM photos p
";
}
}
/* if show_tags is set, only return details of photos which are
tagged with a tag that has been specified to be shown.
*/
if(isset($this->cfg->show_tags) && !empty($this->cfg->show_tags)) {
$query_str.= "
INNER JOIN photo_tags pt
ON p.id=pt.photo_id
INNER JOIN tags t
ON pt.tag_id=t.id
WHERE p.id='". $idx ."'
AND t.name IN ('".implode("','",$this->cfg->show_tags)."')";
}
else {
$query_str.= "
WHERE p.id='". $idx ."'
";
}
if($row = $this->db->db_fetchSingleRow($query_str)) {
/* before F-Spot db version 9 there was no uri column but
seperated fields for directory_path and name (= filename).
*/
if($this->dbver < 9) {
$row['uri'] = "file://". $row['directory_path'] ."/". $row['name'];
}
/* if version-idx has not yet been set, get the latest photo version */
if(!isset($version_idx) || !$this->is_valid_version($idx, $version_idx))
$version_idx = $this->get_latest_version($idx);
/* if an alternative version has been requested */
if($version_idx > 0) {
/* check for alternative versions */
if($version = $this->db->db_fetchSingleRow("
SELECT
version_id, name, uri
FROM
photo_versions
WHERE
photo_id LIKE '". $idx ."'
AND
version_id LIKE '". $version_idx ."'
")) {
$row['name'] = $version['name'];
$row['uri'] = $version['uri'];
}
}
return $row;
}
return null;
} // get_photo_details()
/**
* returns aligned photo names
*
* this function returns aligned (length) names for a specific photo.
* If the length of the name exceeds $limit the name will bei
* shrinked (...).
*
* @param integer $idx
* @param integer $limit
* @return string|null
*/
public function getPhotoName($idx, $limit = 0)
{
if($details = $this->get_photo_details($idx)) {
if($long_name = $this->parse_uri($details['uri'], 'filename')) {
$name = $this->shrink_text($long_name, $limit);
return $name;
}
}
return null;
} // getPhotoName()
/**
* get photo rating level
*
* this function will return the integer-based rating level of a
* photo. This can only be done, if the F-Spot database is at a
* specific version. If rating value can not be found, zero will
* be returned indicating no rating value is available.
*
* @param integer idx
* @return integer
*/
public function get_photo_rating($idx)
{
if($detail = $this->get_photo_details($idx)) {
if(isset($detail['rating']))
return $detail['rating'];
}
return 0;
} // get_photo_rating()
/**
* get rate-search bars
*
* this function will return the rating-bars for the search field.
*
* @return string
*/
public function get_rate_search()
{
$bar = "";
for($i = 1; $i <= 5; $i++) {
$bar.= "cfg->web_path ."/resources/star.png";
else
$bar.= $this->cfg->web_path ."/resources/empty_rate.png";
$bar.= "\"
onmouseover=\"show_rate('from', ". $i .");\"
onmouseout=\"reset_rate('from');\"
onclick=\"set_rate('from', ". $i .")\" />";
}
$bar.= " \n";
for($i = 1; $i <= 5; $i++) {
$bar.= "cfg->web_path ."/resources/star.png";
else
$bar.= $this->cfg->web_path ."/resources/empty_rate.png";
$bar.= "\"
onmouseover=\"show_rate('to', ". $i .");\"
onmouseout=\"reset_rate('to');\"
onclick=\"set_rate('to', ". $i .");\" />";
}
return $bar;
} // get_rate_search()
/**
* shrink text according provided limit
*
* If the length of the name exceeds $limit, text will be shortend
* and inner content will be replaced with "...".
*
* @param string $ext
* @param integer $limit
* @return string
*/
private function shrink_text($text, $limit)
{
if($limit != 0 && strlen($text) > $limit) {
$text = substr($text, 0, $limit-5) ."...". substr($text, -($limit-5));
}
return $text;
} // shrink_text();
/**
* translate f-spoth photo path
*
* as the full-qualified path recorded in the f-spot database
* is usally not the same as on the webserver, this function
* will replace the path with that one specified in the cfg
* @param string $path
* @return string
*/
public function translate_path($path)
{
return str_replace($this->cfg->path_replace_from, $this->cfg->path_replace_to, $path);
} // translate_path
/**
* control HTML ouput for a single photo
*
* this function provides all the necessary information
* for the single photo template.
* @param integer photo
*/
public function showPhoto($photo)
{
/* get all photos from the current photo selection */
$all_photos = $this->getPhotoSelection();
$count = count($all_photos);
for($i = 0; $i < $count; $i++) {
// $get_next will be set, when the photo which has to
// be displayed has been found - this means that the
// next available is in fact the NEXT image (for the
// navigation icons)
if(isset($get_next)) {
$next_img = $all_photos[$i];
break;
}
/* the next photo is our NEXT photo */
if($all_photos[$i] == $photo) {
$get_next = 1;
}
else {
$previous_img = $all_photos[$i];
}
if($photo == $all_photos[$i]) {
$current = $i;
}
}
$details = $this->get_photo_details($photo);
if(!$details) {
print "error";
return;
}
$orig_path = $this->translate_path($this->parse_uri($details['uri'], 'fullpath'));
/* if current version is already set, use it */
if($this->get_current_version() !== false)
$version = $this->get_current_version();
/* if version not set yet, we assume to display the latest version */
if(!isset($version) || !$this->is_valid_version($photo, $version))
$version = $this->get_latest_version($photo);
$thumb_path = $this->get_thumb_path($this->cfg->photo_width, $photo, $version);
if(!file_exists($orig_path)) {
$this->_error("Photo ". $orig_path ." does not exist! \n");
return;
}
if(!is_readable($orig_path)) {
$this->_error("Photo ". $orig_path ." is not readable for user ". $this->getuid() ." \n");
return;
}
/* If the thumbnail doesn't exist yet, try to create it */
if(!file_exists($thumb_path)) {
$this->gen_thumb($photo, true);
$thumb_path = $this->get_thumb_path($this->cfg->photo_width, $photo, $version);
}
/* get mime-type, height and width from the original photo */
$info = getimagesize($orig_path);
/* get EXIF information if JPEG */
if(isset($info['mime']) && $info['mime'] == "image/jpeg") {
$meta = $this->get_meta_informations($orig_path);
}
/* If EXIF data are available, use them */
if(isset($meta['ExifImageWidth'])) {
$meta_res = $meta['ExifImageWidth'] ."x". $meta['ExifImageLength'];
} else {
$meta_res = $info[0] ."x". $info[1];
}
$meta_make = isset($meta['Make']) ? $meta['Make'] ." / ". $meta['Model'] : "n/a";
$meta_size = isset($meta['FileSize']) ? round($meta['FileSize']/1024, 1) ."kbyte" : "n/a";
$extern_link = "index.php?mode=showp&id=". $photo;
$current_tags = $this->getCurrentTags();
if($current_tags != "") {
$extern_link.= "&tags=". $current_tags;
}
if(isset($_SESSION['from_date']) && isset($_SESSION['to_date'])) {
$extern_link.= "&from_date=". $this->ts2str($_SESSION['from_date']) ."&to_date=". $this->ts2str($_SESSION['to_date']);
}
$this->tmpl->assign('extern_link', $extern_link);
if(!file_exists($thumb_path)) {
$this->_error("Can't open file ". $thumb_path ."\n");
return;
}
$info_thumb = getimagesize($thumb_path);
$this->tmpl->assign('description', $details['description']);
$this->tmpl->assign('image_name', $this->parse_uri($details['uri'], 'filename'));
$this->tmpl->assign('image_rating', $this->get_photo_rating($photo));
$this->tmpl->assign('width', $info_thumb[0]);
$this->tmpl->assign('height', $info_thumb[1]);
$this->tmpl->assign('ExifMadeOn', strftime("%a %x %X", $details['time']));
$this->tmpl->assign('ExifMadeWith', $meta_make);
$this->tmpl->assign('ExifOrigResolution', $meta_res);
$this->tmpl->assign('ExifFileSize', $meta_size);
if($this->is_user_friendly_url()) {
$this->tmpl->assign('image_url', '/photo/'. $photo ."/". $this->cfg->photo_width .'/'. $version);
$this->tmpl->assign('image_url_full', '/photo/'. $photo);
}
else {
$this->tmpl->assign('image_url', 'phpfspot_img.php?idx='. $photo ."&width=". $this->cfg->photo_width ."&version=". $version);
$this->tmpl->assign('image_url_full', 'phpfspot_img.php?idx='. $photo);
}
$this->tmpl->assign('image_filename', $this->parse_uri($details['uri'], 'filename'));
$this->tmpl->assign('tags', $this->get_photo_tags($photo));
$this->tmpl->assign('current_page', $this->getCurrentPage($current, $count));
$this->tmpl->assign('current_img', $photo);
if(isset($previous_img)) {
$this->tmpl->assign('previous_url', "javascript:showPhoto(". $previous_img .");");
$this->tmpl->assign('prev_img', $previous_img);
}
if(isset($next_img)) {
$this->tmpl->assign('next_url', "javascript:showPhoto(". $next_img .");");
$this->tmpl->assign('next_img', $next_img);
}
$this->tmpl->assign('mini_width', $this->cfg->mini_width);
$this->tmpl->assign('photo_width', $this->cfg->photo_width);
$this->tmpl->assign('photo_number', $i);
$this->tmpl->assign('photo_count', count($all_photos));
$this->tmpl->assign('photo', $photo);
$this->tmpl->assign('version', $version);
/* if the photo as alternative versions, set a flag for the template */
if($this->get_photo_versions($photo))
$this->tmpl->assign('has_versions', true);
$this->tmpl->register_function("photo_version_select_list", array(&$this, "smarty_photo_version_select_list"), false);
return $this->tmpl->fetch("single_photo.tpl");
} // showPhoto()
/**
* all available tags and tag cloud
*
* this function outputs all available tags (time ordered)
* and in addition output them as tag cloud (tags which have
* many photos will appears more then others)
*/
public function getAvailableTags()
{
/* retrive tags from database */
$this->get_tags();
$output = "";
$result = $this->db->db_query("
SELECT tag_id as id, count(tag_id) as quantity
FROM photo_tags
INNER JOIN tags t
ON t.id = tag_id
GROUP BY tag_id
ORDER BY t.name ASC
");
$tags = Array();
while($row = $this->db->db_fetch_object($result)) {
$tags[$row['id']] = $row['quantity'];
}
// change these font sizes if you will
$max_size = 125; // max font size in %
$min_size = 75; // min font size in %
// color
$max_sat = hexdec('cc');
$min_sat = hexdec('44');
// get the largest and smallest array values
$max_qty = max(array_values($tags));
$min_qty = min(array_values($tags));
// find the range of values
$spread = $max_qty - $min_qty;
if (0 == $spread) { // we don't want to divide by zero
$spread = 1;
}
// determine the font-size increment
// this is the increase per tag quantity (times used)
$step = ($max_size - $min_size)/($spread);
$step_sat = ($max_sat - $min_sat)/($spread);
// loop through our tag array
foreach ($tags as $key => $value) {
/* has the currently processed tag already been added to
the selected tag list? if so, ignore it here...
*/
if(isset($_SESSION['selected_tags']) && in_array($key, $_SESSION['selected_tags']))
continue;
// calculate CSS font-size
// find the $value in excess of $min_qty
// multiply by the font-size increment ($size)
// and add the $min_size set above
$size = $min_size + (($value - $min_qty) * $step);
// uncomment if you want sizes in whole %:
$size = ceil($size);
$color = $min_sat + ($value - $min_qty) * $step_sat;
$r = '44';
$g = dechex($color);
$b = '88';
if(isset($this->tags[$key])) {
if($this->is_user_friendly_url()) {
$output.= "cfg->web_path ."/tag/". $key ."\"
onclick=\"Tags('add', ". $key ."); return false;\"
class=\"tag\"
style=\"font-size: ". $size ."%; color: #". $r.$g.$b .";\"
title=\"Tag ". $this->tags[$key] .", ". $tags[$key] ." picture(s)\">". $this->tags[$key] .", ";
}
else {
$output.= "cfg->web_path ."/index.php?mode=showpi\"
onclick=\"Tags('add', ". $key ."); return false;\"
class=\"tag\"
style=\"font-size: ". $size ."%; color: #". $r.$g.$b .";\"
title=\"Tag ". $this->tags[$key] .", ". $tags[$key] ." picture(s)\">". $this->tags[$key] .", ";
}
}
}
$output = substr($output, 0, strlen($output)-2);
return $output;
} // getAvailableTags()
/**
* output all selected tags
*
* this function output all tags which have been selected
* by the user. the selected tags are stored in the
* session-variable $_SESSION['selected_tags']
* @return string
*/
public function getSelectedTags($type = 'link')
{
/* retrive tags from database */
$this->get_tags();
$output = "";
foreach($this->avail_tags as $tag)
{
// return all selected tags
if(isset($_SESSION['selected_tags']) && in_array($tag, $_SESSION['selected_tags'])) {
switch($type) {
default:
case 'link':
$output.= "". $this->tags[$tag] .", ";
break;
case 'img':
$output.= "
![\"warning\"](\"resources/green_info.png\")
\n";
print $text ."