|
// | branch : BSF (Best So Far) |
// +-----------------------------------------------------------------------+
// | file : $RCSfile$
// | last update : $Date$
// | last modifier : $Author$
// | revision : $Revision$
// +-----------------------------------------------------------------------+
// | This program is free software; you can redistribute it and/or modify |
// | it under the terms of the GNU General Public License as published by |
// | the Free Software Foundation |
// | |
// | This program is distributed in the hope that it will be useful, but |
// | WITHOUT ANY WARRANTY; without even the implied warranty of |
// | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
// | General Public License for more details. |
// | |
// | You should have received a copy of the GNU General Public License |
// | along with this program; if not, write to the Free Software |
// | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
// | USA. |
// +-----------------------------------------------------------------------+
/**
* Provides functions to handle categories.
*
*
*/
/**
* Is the category accessible to the connected user ?
*
* Note : if the user is not authorized to see this category, page creation
* ends (exit command in this function)
*
* @param int category id to verify
* @return void
*/
function check_restrictions( $category_id )
{
global $user,$lang;
if ( in_array( $category_id, $user['restrictions'] ) )
{
echo '';
exit();
}
}
/**
* Checks whether the argument is a right parameter category id
*
* The argument is a right parameter if corresponds to one of these :
*
* - is numeric and corresponds to a category in the database
* - equals 'fav' (for favorites)
* - equals 'search' (when the result of a search is displayed)
* - equals 'most_visited'
* - equals 'best_rated'
* - equals 'recent_pics'
* - equals 'recent_cats'
* - equals 'calendar'
* - equals 'random'
*
* The function fills the global var $page['cat'] and returns nothing
*
* @param mixed category id or special category name
* @return void
*/
function check_cat_id( $cat )
{
global $page;
unset( $page['cat'] );
if ( isset( $cat ) )
{
if ( isset( $page['plain_structure'][$cat] ) )
{
$page['cat'] = $cat;
}
else if ( is_numeric( $cat ) )
{
$query = 'SELECT id';
$query.= ' FROM '.CATEGORIES_TABLE.' WHERE id = '.$cat.';';
$result = pwg_query( $query );
if ( mysql_num_rows( $result ) != 0 )
{
$page['cat'] = $cat;
}
}
if ( $cat == 'fav'
or $cat == 'most_visited'
or $cat == 'best_rated'
or $cat == 'recent_pics'
or $cat == 'recent_cats'
or $cat == 'calendar'
or $cat == 'random' )
{
$page['cat'] = $cat;
}
if ($cat == 'search' and isset($_GET['search']))
{
$page['cat'] = $cat;
}
}
}
function get_user_plain_structure()
{
global $page,$user;
$infos = array( 'name','id','date_last','nb_images','dir','id_uppercat',
'rank','site_id','uppercats');
$query = 'SELECT '.implode( ',', $infos );
$query.= ' FROM '.CATEGORIES_TABLE;
$query.= ' WHERE 1 = 1'; // stupid but permit using AND after it !
if ( !$user['expand'] )
{
$query.= ' AND (id_uppercat is NULL';
if ( isset ($page['tab_expand']) && count( $page['tab_expand'] ) > 0 )
{
$query.= ' OR id_uppercat IN ('.implode(',',$page['tab_expand']).')';
}
$query.= ')';
}
if ( $user['forbidden_categories'] != '' )
{
$query.= ' AND id NOT IN ';
$query.= '('.$user['forbidden_categories'].')';
}
$query.= ' ORDER BY id_uppercat ASC, rank ASC';
$query.= ';';
$plain_structure = array();
$result = pwg_query( $query );
while ( $row = mysql_fetch_array( $result ) )
{
$category = array();
foreach ( $infos as $info ) {
if ( $info == 'uc.date_last')
{
if ( empty( $row['date_last'] ) )
{
$category['date_last'] = 0;
}
else
{
list($year,$month,$day) = explode( '-', $row['date_last'] );
$category['date_last'] = mktime(0,0,0,$month,$day,$year);
}
}
else if ( isset( $row[$info] ) ) $category[$info] = $row[$info];
else $category[$info] = '';
}
$plain_structure[$row['id']] = $category;
}
return $plain_structure;
}
function create_user_structure( $id_uppercat )
{
global $page;
if ( !isset( $page['plain_structure'] ) )
$page['plain_structure'] = get_user_plain_structure();
$structure = array();
$ids = get_user_subcat_ids( $id_uppercat );
foreach ( $ids as $id ) {
$category = $page['plain_structure'][$id];
$category['subcats'] = create_user_structure( $id );
array_push( $structure, $category );
}
return $structure;
}
function get_user_subcat_ids( $id_uppercat )
{
global $page;
$ids = array();
foreach ( $page['plain_structure'] as $id => $category ) {
if ( $category['id_uppercat'] == $id_uppercat ) array_push( $ids, $id );
else if ( count( $ids ) > 0 ) return $ids;
}
return $ids;
}
// update_structure updates or add informations about each node of the
// structure :
//
// 1. should the category be expanded in the menu ?
// If the category has to be expanded (ie its id is in the
// $page['tab_expand'] or all the categories must be expanded by default),
// $category['expanded'] is set to true.
//
// 2. associated expand string
// in the menu, there is a expand string (used in the URL) to tell which
// categories must be expanded in the menu if this category is chosen
function update_structure( $categories )
{
global $page, $user;
$updated_categories = array();
foreach ( $categories as $category ) {
// update the "expanded" key
if ( $user['expand']
or in_array( $category['id'], $page['tab_expand'] ) )
{
$category['expanded'] = true;
}
else
{
$category['expanded'] = false;
}
// recursive call
$category['subcats'] = update_structure( $category['subcats'] );
// adding the updated category
array_push( $updated_categories, $category );
}
return $updated_categories;
}
// count_images returns the number of pictures contained in the given
// category represented by an array, in this array, we have (among other
// things) :
// $category['nb_images'] -> number of pictures in this category
// $category['subcats'] -> array of sub-categories
// count_images goes to the deepest sub-category to find the total number of
// pictures contained in the given given category
function count_images( $categories )
{
return count_user_total_images();
$total = 0;
foreach ( $categories as $category ) {
$total+= $category['nb_images'];
$total+= count_images( $category['subcats'] );
}
return $total;
}
function count_user_total_images()
{
global $user;
$query = 'SELECT SUM(nb_images) AS total';
$query.= ' FROM '.CATEGORIES_TABLE;
if ( count( $user['restrictions'] ) > 0 )
$query.= ' WHERE id NOT IN ('.$user['forbidden_categories'].')';
$query.= ';';
// $query = '
// SELECT COUNT(DISTINCT(image_id)) as total
// FROM '.PREFIX_TABLE.'image_category';
// if (count($user['restrictions']) > 0)
// {
// $query.= '
// WHERE category_id NOT IN ('.$user['forbidden_categories'].')';
// }
// $query = '
// ;';
$row = mysql_fetch_array( pwg_query( $query ) );
if ( !isset( $row['total'] ) ) $row['total'] = 0;
return $row['total'];
}
/**
* Retrieve informations about a category in the database
*
* Returns an array with following keys :
*
* - comment
* - dir : directory, might be empty for virtual categories
* - name : an array with indexes from 0 (lowest cat name) to n (most
* uppercat name findable)
* - nb_images
* - id_uppercat
* - site_id
* -
*
* @param int category id
* @return array
*/
function get_cat_info( $id )
{
$infos = array( 'nb_images','id_uppercat','comment','site_id','galleries_url'
,'dir','date_last','uploadable','status','visible'
,'representative_picture_id','uppercats' );
$query = 'SELECT '.implode( ',', $infos );
$query.= ' FROM '.CATEGORIES_TABLE.' AS a';
$query.= ', '.SITES_TABLE.' AS b';
$query.= ' WHERE a.id = '.$id;
$query.= ' AND a.site_id = b.id';
$query.= ';';
$row = mysql_fetch_array( pwg_query( $query ) );
$cat = array();
// affectation of each field of the table "config" to an information of the
// array $cat.
foreach ( $infos as $info ) {
if ( isset( $row[$info] ) ) $cat[$info] = $row[$info];
else $cat[$info] = '';
// If the field is true or false, the variable is transformed into a
// boolean value.
if ( $cat[$info] == 'true' or $cat[$info] == 'false' )
{
$cat[$info] = get_boolean( $cat[$info] );
}
}
$cat['comment'] = nl2br( $cat['comment'] );
$cat['name'] = array();
$query = 'SELECT name,id FROM '.CATEGORIES_TABLE;
$query.= ' WHERE id IN ('.$cat['uppercats'].')';
$query.= ' ORDER BY id ASC';
$query.= ';';
$result = pwg_query( $query );
while( $row = mysql_fetch_array( $result ) )
{
$cat['name'][$row['id']] = $row['name'];
}
return $cat;
}
// get_complete_dir returns the concatenation of get_site_url and
// get_local_dir
// Example : "pets > rex > 1_year_old" is on the the same site as the
// PhpWebGallery files and this category has 22 for identifier
// get_complete_dir(22) returns "./galleries/pets/rex/1_year_old/"
function get_complete_dir( $category_id )
{
return get_site_url($category_id).get_local_dir($category_id);
}
// get_local_dir returns an array with complete path without the site url
// Example : "pets > rex > 1_year_old" is on the the same site as the
// PhpWebGallery files and this category has 22 for identifier
// get_local_dir(22) returns "pets/rex/1_year_old/"
function get_local_dir( $category_id )
{
global $page;
$uppercats = '';
$local_dir = '';
if ( isset( $page['plain_structure'][$category_id]['uppercats'] ) )
{
$uppercats = $page['plain_structure'][$category_id]['uppercats'];
}
else
{
$query = 'SELECT uppercats';
$query.= ' FROM '.CATEGORIES_TABLE.' WHERE id = '.$category_id;
$query.= ';';
$row = mysql_fetch_array( pwg_query( $query ) );
$uppercats = $row['uppercats'];
}
$upper_array = explode( ',', $uppercats );
$database_dirs = array();
$query = 'SELECT id,dir';
$query.= ' FROM '.CATEGORIES_TABLE.' WHERE id IN ('.$uppercats.')';
$query.= ';';
$result = pwg_query( $query );
while( $row = mysql_fetch_array( $result ) )
{
$database_dirs[$row['id']] = $row['dir'];
}
foreach ($upper_array as $id)
{
$local_dir.= $database_dirs[$id].'/';
}
return $local_dir;
}
// retrieving the site url : "http://domain.com/gallery/" or
// simply "./galleries/"
function get_site_url($category_id)
{
global $page;
$query = '
SELECT galleries_url
FROM '.SITES_TABLE.' AS s,'.CATEGORIES_TABLE.' AS c
WHERE s.id = c.site_id
AND c.id = '.$category_id.'
;';
$row = mysql_fetch_array(pwg_query($query));
return $row['galleries_url'];
}
// initialize_category initializes ;-) the variables in relation
// with category :
// 1. calculation of the number of pictures in the category
// 2. determination of the SQL query part to ask to find the right category
// $page['where'] is not the same if we are in
// - simple category
// - search result
// - favorites displaying
// - most visited pictures
// - best rated pictures
// - recent pictures
// - random pictures
// 3. determination of the title of the page
// 4. creation of the navigation bar
function initialize_category( $calling_page = 'category' )
{
pwg_debug( 'start initialize_category' );
global $page,$lang,$user,$conf;
if ( isset( $page['cat'] ) )
{
// $page['nb_image_page'] is the number of picture to display on this page
// By default, it is the same as the $user['nb_image_page']
$page['nb_image_page'] = $user['nb_image_page'];
// $url is used to create the navigation bar
$url = './category.php?cat='.$page['cat'];
if ( isset($page['expand']) ) $url.= '&expand='.$page['expand'];
// simple category
if ( is_numeric( $page['cat'] ) )
{
$result = get_cat_info( $page['cat'] );
$page['comment'] = $result['comment'];
$page['cat_dir'] = $result['dir'];
$page['cat_name'] = $result['name'];
$page['cat_nb_images'] = $result['nb_images'];
$page['cat_site_id'] = $result['site_id'];
$page['cat_uploadable'] = $result['uploadable'];
$page['uppercats'] = $result['uppercats'];
$page['title'] = get_cat_display_name( $page['cat_name'],' - ','',false);
$page['where'] = ' WHERE category_id = '.$page['cat'];
}
else
{
if ( $page['cat'] == 'search'
or $page['cat'] == 'most_visited'
or $page['cat'] == 'recent_pics'
or $page['cat'] == 'recent_cats'
or $page['cat'] == 'best_rated'
or $page['cat'] == 'calendar' )
{
// we must not show pictures of a forbidden category
if ( $user['forbidden_categories'] != '' )
{
$forbidden = ' category_id NOT IN ';
$forbidden.= '('.$user['forbidden_categories'].')';
}
}
// search result
if ( $page['cat'] == 'search' )
{
// analyze search string given in URL (created in search.php)
$tokens = explode('|', $_GET['search']);
if (isset($tokens[1]) and $tokens[1] == 'AND')
{
$search['mode'] = 'AND';
}
else
{
$search['mode'] = 'OR';
}
$search_tokens = explode(';', $tokens[0]);
foreach ($search_tokens as $search_token)
{
$tokens = explode(':', $search_token);
$field_name = $tokens[0];
$field_content = $tokens[1];
$tokens = explode('~', $tokens[1]);
if (isset($tokens[1]))
{
$search['fields'][$field_name]['mode'] = $tokens[1];
}
else
{
$search['fields'][$field_name]['mode'] = '';
}
$search['fields'][$field_name]['words'] = array();
$tokens = explode(',', $tokens[0]);
foreach ($tokens as $token)
{
array_push($search['fields'][$field_name]['words'], $token);
}
}
$page['title'] = $lang['search_result'];
if ( $calling_page == 'picture' )
{
$page['title'].= ' : ';
$page['title'].= $_GET['search']."";
}
// SQL where clauses are stored in $clauses array during query
// construction
$clauses = array();
$textfields = array('file', 'name', 'comment', 'keywords', 'author');
foreach ($textfields as $textfield)
{
if (isset($search['fields'][$textfield]))
{
$local_clauses = array();
foreach ($search['fields'][$textfield]['words'] as $word)
{
array_push($local_clauses, $textfield." LIKE '%".$word."%'");
}
// adds brackets around where clauses
array_walk($local_clauses,create_function('&$s','$s="(".$s.")";'));
array_push($clauses,
implode(' '.$search['fields'][$textfield]['mode'].' ',
$local_clauses));
}
}
$datefields = array('date_available', 'date_creation');
foreach ($datefields as $datefield)
{
$key = $datefield;
if (isset($search['fields'][$key]))
{
$local_clause = $datefield." = '";
$local_clause.= str_replace('.', '-',
$search['fields'][$key]['words'][0]);
$local_clause.= "'";
array_push($clauses, $local_clause);
}
foreach (array('after','before') as $suffix)
{
$key = $datefield.'-'.$suffix;
if (isset($search['fields'][$key]))
{
$local_clause = $datefield;
if ($suffix == 'after')
{
$local_clause.= ' >';
}
else
{
$local_clause.= ' <';
}
if (isset($search['fields'][$key]['mode'])
and $search['fields'][$key]['mode'] == 'inc')
{
$local_clause.= '=';
}
$local_clause.= " '";
$local_clause.= str_replace('.', '-',
$search['fields'][$key]['words'][0]);
$local_clause.= "'";
array_push($clauses, $local_clause);
}
}
}
if (isset($search['fields']['cat']))
{
if ($search['fields']['cat']['mode'] == 'sub_inc')
{
// searching all the categories id of sub-categories
$search_cat_clauses = array();
foreach ($search['fields']['cat']['words'] as $cat_id)
{
$local_clause = 'uppercats REGEXP \'(^|,)'.$cat_id.'(,|$)\'';
array_push($search_cat_clauses, $local_clause);
}
array_walk($search_cat_clauses,
create_function('&$s', '$s = "(".$s.")";'));
$query = '
SELECT DISTINCT(id) AS id
FROM '.CATEGORIES_TABLE.'
WHERE '.implode(' OR ', $search_cat_clauses).'
;';
$result = pwg_query($query);
$cat_ids = array();
while ($row = mysql_fetch_array($result))
{
array_push($cat_ids, $row['id']);
}
$local_clause = 'category_id IN (';
$local_clause.= implode(',',$cat_ids);
$local_clause.= ')';
array_push($clauses, $local_clause);
}
else
{
$local_clause = 'category_id IN (';
$local_clause.= implode(',',$search['fields']['cat']['words']);
$local_clause.= ')';
array_push($clauses, $local_clause);
}
}
// adds brackets around where clauses
array_walk($clauses, create_function('&$s', '$s = "(".$s.")";'));
$page['where'] = 'WHERE '.implode(' '.$search['mode'].' ', $clauses);
if ( isset( $forbidden ) ) $page['where'].= ' AND '.$forbidden;
$query = '
SELECT COUNT(DISTINCT(id)) AS nb_total_images
FROM '.IMAGES_TABLE.'
INNER JOIN '.IMAGE_CATEGORY_TABLE.' AS ic ON id = ic.image_id
'.$page['where'].'
;';
$url.= '&search='.$_GET['search'];
}
// favorites displaying
else if ( $page['cat'] == 'fav' )
{
$page['title'] = $lang['favorites'];
$page['where'] = ', '.FAVORITES_TABLE.' AS fav';
$page['where'].= ' WHERE user_id = '.$user['id'];
$page['where'].= ' AND fav.image_id = id';
$query = 'SELECT COUNT(*) AS nb_total_images';
$query.= ' FROM '.FAVORITES_TABLE;
$query.= ' WHERE user_id = '.$user['id'];
$query.= ';';
}
// pictures within the short period
else if ( $page['cat'] == 'recent_pics' )
{
$page['title'] = $lang['recent_pics_cat'];
// We must find the date corresponding to :
// today - $conf['periode_courte']
$date = time() - 60*60*24*$user['recent_period'];
$page['where'] = " WHERE date_available > '";
$page['where'].= date( 'Y-m-d', $date )."'";
if ( isset( $forbidden ) ) $page['where'].= ' AND '.$forbidden;
$query = 'SELECT COUNT(DISTINCT(id)) AS nb_total_images';
$query.= ' FROM '.IMAGES_TABLE;
$query.= ' INNER JOIN '.PREFIX_TABLE.'image_category AS ic';
$query.= ' ON id = ic.image_id';
$query.= $page['where'];
$query.= ';';
}
// categories containing recent pictures
else if ( $page['cat'] == 'recent_cats' )
{
$page['title'] = $lang['recent_cats_cat'];
$page['cat_nb_images'] = 0;
}
// most visited pictures
else if ( $page['cat'] == 'most_visited' )
{
$page['title'] = $conf['top_number'].' '.$lang['most_visited_cat'];
$page['where'] = 'WHERE hit > 0';
if (isset($forbidden))
{
$page['where'] = "\n".' AND '.$forbidden;
}
$conf['order_by'] = ' ORDER BY hit DESC, file ASC';
$page['cat_nb_images'] = $conf['top_number'];
if ( isset( $page['start'] )
and ($page['start']+$user['nb_image_page']>=$conf['top_number']))
{
$page['nb_image_page'] = $conf['top_number'] - $page['start'];
}
}
else if ( $page['cat'] == 'calendar' )
{
$page['cat_nb_images'] = 0;
$page['title'] = $lang['calendar'];
if (isset($_GET['year'])
and preg_match('/^\d+$/', $_GET['year']))
{
$page['calendar_year'] = (int)$_GET['year'];
}
if (isset($_GET['month'])
and preg_match('/^(\d+)\.(\d{2})$/', $_GET['month'], $matches))
{
$page['calendar_year'] = (int)$matches[1];
$page['calendar_month'] = (int)$matches[2];
}
if (isset($_GET['day'])
and preg_match('/^(\d+)\.(\d{2})\.(\d{2})$/',
$_GET['day'],
$matches))
{
$page['calendar_year'] = (int)$matches[1];
$page['calendar_month'] = (int)$matches[2];
$page['calendar_day'] = (int)$matches[3];
}
if (isset($page['calendar_year']))
{
$page['title'] .= ' (';
if (isset($page['calendar_day']))
{
$unixdate = mktime(0,0,0,
$page['calendar_month'],
$page['calendar_day'],
$page['calendar_year']);
$page['title'].= $lang['day'][date("w", $unixdate)];
$page['title'].= ' '.$page['calendar_day'].', ';
}
if (isset($page['calendar_month']))
{
$page['title'] .= $lang['month'][$page['calendar_month']].' ';
}
$page['title'] .= $page['calendar_year'];
$page['title'] .= ')';
}
$page['where'] = 'WHERE '.$conf['calendar_datefield'].' IS NOT NULL';
if (isset($forbidden))
{
$page['where'].= ' AND '.$forbidden;
}
}
else if ($page['cat'] == 'best_rated')
{
$page['title'] = $conf['top_number'].' '.$lang['best_rated_cat'];
$page['where'] = ' WHERE average_rate IS NOT NULL';
if (isset($forbidden))
{
$page['where'].= ' AND '.$forbidden;
}
$conf['order_by'] = ' ORDER BY average_rate DESC, id ASC';
// $page['cat_nb_images'] equals $conf['top_number'] unless there
// are less rated items
$query ='
SELECT COUNT(1) AS count
FROM '.IMAGES_TABLE.'
'.$page['where'].'
;';
$row = mysql_fetch_array(pwg_query($query));
if ($row['count'] < $conf['top_number'])
{
$page['cat_nb_images'] = $row['count'];
}
else
{
$page['cat_nb_images'] = $conf['top_number'];
}
unset($query);
if (isset($page['start'])
and ($page['start']+$user['nb_image_page']>=$conf['top_number']))
{
$page['nb_image_page'] = $conf['top_number'] - $page['start'];
}
}
else if ($page['cat'] == 'random')
{
$page['title'] = $lang['random_cat'];
if (isset($forbidden))
{
$page['where'] = 'WHERE '.$forbidden;
}
else
{
$page['where'] = 'WHERE 1=1';
}
$conf['order_by'] = ' ORDER BY RAND()';
$page['cat_nb_images'] = $conf['top_number'];
$page['nb_image_page'] = $page['cat_nb_images'];
}
if (isset($query))
{
$result = pwg_query( $query );
$row = mysql_fetch_array( $result );
$page['cat_nb_images'] = $row['nb_total_images'];
}
}
if ( $calling_page == 'category' )
{
$page['navigation_bar'] =
create_navigation_bar( $url, $page['cat_nb_images'], $page['start'],
$user['nb_image_page'], 'back' );
}
}
else
{
$page['title'] = $lang['diapo_default_page_title'];
}
pwg_debug( 'end initialize_category' );
}
// get_non_empty_subcat_ids returns an array with sub-categories id
// associated with their first non empty category id.
//
// example :
//
// - catname [cat_id]
// - cat1 [1] -> given uppercat
// - cat1.1 [12] (empty)
// - cat1.1.1 [5] (empty)
// - cat1.1.2 [6]
// - cat1.2 [3]
// - cat1.3 [4]
//
// get_non_empty_sub_cat_ids will return :
// $ids[12] = 6;
// $ids[3] = 3;
// $ids[4] = 4;
function get_non_empty_subcat_ids( $id_uppercat )
{
global $user;
$ids = array();
$query = 'SELECT id,nb_images';
$query.= ' FROM '.CATEGORIES_TABLE;
$query.= ' WHERE id_uppercat ';
if ( !is_numeric( $id_uppercat ) ) $query.= 'is NULL';
else $query.= '= '.$id_uppercat;
// we must not show pictures of a forbidden category
if ( $user['forbidden_categories'] != '' )
{
$query.= ' AND id NOT IN ('.$user['forbidden_categories'].')';
}
$query.= ' ORDER BY rank';
$query.= ';';
$result = pwg_query( $query );
while ( $row = mysql_fetch_array( $result ) )
{
// only categories with findable picture in any of its subcats is
// represented.
if ( ( $row['nb_images'] != 0 and $non_empty_cat = $row['id'] )
or $non_empty_cat = get_first_non_empty_cat_id( $row['id'] ) )
{
$ids[$row['id']] = $non_empty_cat;
}
}
return $ids;
}
// get_first_non_empty_cat_id returns the id of the first non empty
// sub-category to the given uppercat. If no picture is found in any
// subcategory, false is returned.
function get_first_non_empty_cat_id( $id_uppercat )
{
global $user;
$query = 'SELECT id,nb_images';
$query.= ' FROM '.CATEGORIES_TABLE;
$query.= ' WHERE id_uppercat = '.$id_uppercat;
// we must not show pictures of a forbidden category
if ( $user['forbidden_categories'] != '' )
{
$query.= ' AND id NOT IN ('.$user['forbidden_categories'].')';
}
$query.= ' ORDER BY RAND()';
$query.= ';';
$result = pwg_query( $query );
while ( $row = mysql_fetch_array( $result ) )
{
if ( $row['nb_images'] > 0 )
{
return $row['id'];
}
}
$result = pwg_query( $query );
while ( $row = mysql_fetch_array( $result ) )
{
// recursive call
if ( $subcat = get_first_non_empty_cat_id( $row['id'] ) )
{
return $subcat;
}
}
return false;
}
?>