Initial commit: Backup der Webseiten
- zoesch.de - blitzkiste.net - gruene-hassberge (norbert.zoesch.de) 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
This commit is contained in:
Felix Zösch
218
zoesch.de/galerie/include/functions_rate.inc.php
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218
zoesch.de/galerie/include/functions_rate.inc.php
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<?php
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// +-----------------------------------------------------------------------+
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// | Piwigo - a PHP based photo gallery |
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// +-----------------------------------------------------------------------+
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// | Copyright(C) 2008-2016 Piwigo Team http://piwigo.org |
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// | Copyright(C) 2003-2008 PhpWebGallery Team http://phpwebgallery.net |
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// | Copyright(C) 2002-2003 Pierrick LE GALL http://le-gall.net/pierrick |
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// +-----------------------------------------------------------------------+
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// | This program is free software; you can redistribute it and/or modify |
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// | it under the terms of the GNU General Public License as published by |
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// | the Free Software Foundation |
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// | |
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// | This program is distributed in the hope that it will be useful, but |
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// | WITHOUT ANY WARRANTY; without even the implied warranty of |
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// | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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// | General Public License for more details. |
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// | |
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// | You should have received a copy of the GNU General Public License |
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// | along with this program; if not, write to the Free Software |
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// | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
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// | USA. |
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// +-----------------------------------------------------------------------+
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/**
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* @package functions\rate
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*/
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/**
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* Rate a picture by the current user.
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*
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* @param int $image_id
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* @param float $rate
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* @return array as return by update_rating_score()
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*/
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function rate_picture($image_id, $rate)
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{
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global $conf, $user;
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if (!isset($rate)
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or !$conf['rate']
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or !preg_match('/^[0-9]+$/', $rate)
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or !in_array($rate, $conf['rate_items']))
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{
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return false;
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}
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$user_anonymous = is_autorize_status(ACCESS_CLASSIC) ? false : true;
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if ($user_anonymous and !$conf['rate_anonymous'])
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{
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return false;
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}
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$ip_components = explode('.', $_SERVER["REMOTE_ADDR"]);
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if (count($ip_components) > 3)
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{
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array_pop($ip_components);
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}
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$anonymous_id = implode ('.', $ip_components);
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if ($user_anonymous)
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{
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$save_anonymous_id = pwg_get_cookie_var('anonymous_rater', $anonymous_id);
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if ($anonymous_id != $save_anonymous_id)
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{ // client has changed his IP adress or he's trying to fool us
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$query = '
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SELECT element_id
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FROM '.RATE_TABLE.'
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WHERE user_id = '.$user['id'].'
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AND anonymous_id = \''.$anonymous_id.'\'
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;';
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$already_there = array_from_query($query, 'element_id');
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if (count($already_there) > 0)
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{
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$query = '
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DELETE
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FROM '.RATE_TABLE.'
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WHERE user_id = '.$user['id'].'
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AND anonymous_id = \''.$save_anonymous_id.'\'
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AND element_id IN ('.implode(',', $already_there).')
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;';
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pwg_query($query);
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}
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$query = '
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UPDATE '.RATE_TABLE.'
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SET anonymous_id = \'' .$anonymous_id.'\'
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WHERE user_id = '.$user['id'].'
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AND anonymous_id = \'' . $save_anonymous_id.'\'
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;';
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pwg_query($query);
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} // end client changed ip
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pwg_set_cookie_var('anonymous_rater', $anonymous_id);
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} // end anonymous user
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$query = '
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DELETE
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FROM '.RATE_TABLE.'
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WHERE element_id = '.$image_id.'
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AND user_id = '.$user['id'].'
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';
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if ($user_anonymous)
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{
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$query.= ' AND anonymous_id = \''.$anonymous_id.'\'';
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}
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pwg_query($query);
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$query = '
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INSERT
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INTO '.RATE_TABLE.'
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(user_id,anonymous_id,element_id,rate,date)
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VALUES
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('
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.$user['id'].','
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.'\''.$anonymous_id.'\','
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.$image_id.','
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.$rate
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.',NOW())
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;';
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pwg_query($query);
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return update_rating_score($image_id);
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}
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/**
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* Update images.rating_score field.
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* We use a bayesian average (http://en.wikipedia.org/wiki/Bayesian_average) with
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* C = average number of rates per item
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* m = global average rate (all rates)
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*
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* @param int|false $element_id if false applies to all
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* @return array (score, average, count) values are null if $element_id is false
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*/
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function update_rating_score($element_id = false)
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{
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if ( ($alt_result = trigger_change('update_rating_score', false, $element_id)) !== false)
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{
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return $alt_result;
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}
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$query = '
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SELECT element_id,
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COUNT(rate) AS rcount,
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SUM(rate) AS rsum
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FROM '.RATE_TABLE.'
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GROUP by element_id';
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$all_rates_count = 0;
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$all_rates_avg = 0;
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$item_ratecount_avg = 0;
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$by_item = array();
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$result = pwg_query($query);
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while ($row = pwg_db_fetch_assoc($result))
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{
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$all_rates_count += $row['rcount'];
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$all_rates_avg += $row['rsum'];
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$by_item[$row['element_id']] = $row;
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}
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if ($all_rates_count>0)
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{
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$all_rates_avg /= $all_rates_count;
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$item_ratecount_avg = $all_rates_count / count($by_item);
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}
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$updates = array();
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foreach ($by_item as $id => $rate_summary )
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{
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$score = ( $item_ratecount_avg * $all_rates_avg + $rate_summary['rsum'] ) / ($item_ratecount_avg + $rate_summary['rcount']);
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$score = round($score,2);
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if ($id==$element_id)
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{
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$return = array(
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'score' => $score,
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'average' => round($rate_summary['rsum'] / $rate_summary['rcount'], 2),
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'count' => $rate_summary['rcount'],
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);
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}
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$updates[] = array( 'id'=>$id, 'rating_score'=>$score );
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}
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mass_updates(
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IMAGES_TABLE,
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array(
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'primary' => array('id'),
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'update' => array('rating_score')
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),
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$updates
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);
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//set to null all items with no rate
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if ( !isset($by_item[$element_id]) )
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{
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$query='
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SELECT id FROM '.IMAGES_TABLE .'
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LEFT JOIN '.RATE_TABLE.' ON id=element_id
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WHERE element_id IS NULL AND rating_score IS NOT NULL';
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$to_update = array_from_query( $query, 'id');
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if ( !empty($to_update) )
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{
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$query='
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UPDATE '.IMAGES_TABLE .'
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SET rating_score=NULL
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WHERE id IN (' . implode(',',$to_update) . ')';
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pwg_query($query);
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}
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}
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return isset($return) ? $return : array('score'=>null, 'average'=>null, 'count'=>0 );
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}
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?>
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