mirror of
https://github.com/YunoHost-Apps/piwigo_ynh.git
synced 2024-09-03 20:06:03 +02:00
832 lines
No EOL
23 KiB
PHP
832 lines
No EOL
23 KiB
PHP
<?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) 2008-2014 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\search
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*/
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/**
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* Returns search rules stored into a serialized array in "search"
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* table. Each search rules set is numericaly identified.
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*
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* @param int $search_id
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* @return array
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*/
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function get_search_array($search_id)
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{
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if (!is_numeric($search_id))
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{
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die('Search id must be an integer');
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}
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$query = '
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SELECT rules
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FROM '.SEARCH_TABLE.'
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WHERE id = '.$search_id.'
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;';
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list($serialized_rules) = pwg_db_fetch_row(pwg_query($query));
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return unserialize($serialized_rules);
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}
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/**
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* Returns the SQL clause for a search.
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* Transforms the array returned by get_search_array() into SQL sub-query.
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*
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* @param array $search
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* @return string
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*/
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function get_sql_search_clause($search)
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{
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// SQL where clauses are stored in $clauses array during query
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// construction
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$clauses = array();
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foreach (array('file','name','comment','author') as $textfield)
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{
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if (isset($search['fields'][$textfield]))
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{
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$local_clauses = array();
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foreach ($search['fields'][$textfield]['words'] as $word)
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{
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$local_clauses[] = $textfield." LIKE '%".$word."%'";
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}
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// adds brackets around where clauses
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$local_clauses = prepend_append_array_items($local_clauses, '(', ')');
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$clauses[] = implode(
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' '.$search['fields'][$textfield]['mode'].' ',
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$local_clauses
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);
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}
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}
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if (isset($search['fields']['allwords']))
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{
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$fields = array('file', 'name', 'comment', 'author');
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// in the OR mode, request bust be :
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// ((field1 LIKE '%word1%' OR field2 LIKE '%word1%')
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// OR (field1 LIKE '%word2%' OR field2 LIKE '%word2%'))
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//
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// in the AND mode :
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// ((field1 LIKE '%word1%' OR field2 LIKE '%word1%')
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// AND (field1 LIKE '%word2%' OR field2 LIKE '%word2%'))
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$word_clauses = array();
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foreach ($search['fields']['allwords']['words'] as $word)
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{
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$field_clauses = array();
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foreach ($fields as $field)
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{
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$field_clauses[] = $field." LIKE '%".$word."%'";
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}
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// adds brackets around where clauses
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$word_clauses[] = implode(
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"\n OR ",
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$field_clauses
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);
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}
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array_walk(
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$word_clauses,
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create_function('&$s','$s="(".$s.")";')
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);
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// make sure the "mode" is either OR or AND
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if ($search['fields']['allwords']['mode'] != 'AND' and $search['fields']['allwords']['mode'] != 'OR')
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{
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$search['fields']['allwords']['mode'] = 'AND';
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}
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$clauses[] = "\n ".
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implode(
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"\n ". $search['fields']['allwords']['mode']. "\n ",
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$word_clauses
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);
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}
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foreach (array('date_available', 'date_creation') as $datefield)
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{
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if (isset($search['fields'][$datefield]))
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{
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$clauses[] = $datefield." = '".$search['fields'][$datefield]['date']."'";
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}
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foreach (array('after','before') as $suffix)
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{
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$key = $datefield.'-'.$suffix;
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if (isset($search['fields'][$key]))
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{
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$clauses[] = $datefield.
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($suffix == 'after' ? ' >' : ' <').
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($search['fields'][$key]['inc'] ? '=' : '').
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" '".$search['fields'][$key]['date']."'";
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}
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}
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}
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if (isset($search['fields']['cat']))
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{
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if ($search['fields']['cat']['sub_inc'])
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{
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// searching all the categories id of sub-categories
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$cat_ids = get_subcat_ids($search['fields']['cat']['words']);
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}
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else
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{
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$cat_ids = $search['fields']['cat']['words'];
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}
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$local_clause = 'category_id IN ('.implode(',', $cat_ids).')';
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$clauses[] = $local_clause;
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}
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// adds brackets around where clauses
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$clauses = prepend_append_array_items($clauses, '(', ')');
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$where_separator =
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implode(
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"\n ".$search['mode'].' ',
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$clauses
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);
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$search_clause = $where_separator;
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return $search_clause;
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}
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/**
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* Returns the list of items corresponding to the advanced search array.
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*
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* @param array $search
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* @param string $images_where optional additional restriction on images table
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* @return array
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*/
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function get_regular_search_results($search, $images_where='')
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{
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global $conf;
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$forbidden = get_sql_condition_FandF(
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array
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(
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'forbidden_categories' => 'category_id',
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'visible_categories' => 'category_id',
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'visible_images' => 'id'
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),
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"\n AND"
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);
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$items = array();
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$tag_items = array();
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if (isset($search['fields']['tags']))
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{
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$tag_items = get_image_ids_for_tags(
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$search['fields']['tags']['words'],
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$search['fields']['tags']['mode']
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);
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}
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$search_clause = get_sql_search_clause($search);
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if (!empty($search_clause))
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{
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$query = '
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SELECT DISTINCT(id)
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FROM '.IMAGES_TABLE.' i
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INNER JOIN '.IMAGE_CATEGORY_TABLE.' AS ic ON id = ic.image_id
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WHERE '.$search_clause;
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if (!empty($images_where))
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{
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$query .= "\n AND ".$images_where;
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}
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$query .= $forbidden.'
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'.$conf['order_by'];
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$items = array_from_query($query, 'id');
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}
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if ( !empty($tag_items) )
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{
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switch ($search['mode'])
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{
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case 'AND':
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if (empty($search_clause))
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{
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$items = $tag_items;
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}
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else
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{
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$items = array_values( array_intersect($items, $tag_items) );
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}
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break;
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case 'OR':
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$before_count = count($items);
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$items = array_unique(
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array_merge(
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$items,
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$tag_items
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)
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);
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break;
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}
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}
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return $items;
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}
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/**
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* Finds if a char is a letter, a figure or any char of the extended ASCII table (>127).
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*
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* @param char $ch
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* @return bool
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*/
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function is_word_char($ch)
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{
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return ($ch>='0' && $ch<='9') || ($ch>='a' && $ch<='z') || ($ch>='A' && $ch<='Z') || ord($ch)>127;
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}
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/**
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* Finds if a char is a special token for word start: [{<=*+
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*
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* @param char $ch
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* @return bool
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*/
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function is_odd_wbreak_begin($ch)
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{
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return strpos('[{<=*+', $ch)===false ? false:true;
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}
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/**
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* Finds if a char is a special token for word end: ]}>=*+
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*
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* @param char $ch
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* @return bool
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*/
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function is_odd_wbreak_end($ch)
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{
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return strpos(']}>=*+', $ch)===false ? false:true;
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}
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define('QST_QUOTED', 0x01);
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define('QST_NOT', 0x02);
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define('QST_WILDCARD_BEGIN', 0x04);
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define('QST_WILDCARD_END', 0x08);
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define('QST_WILDCARD', QST_WILDCARD_BEGIN|QST_WILDCARD_END);
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/**
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* Analyzes and splits the quick/query search query $q into tokens.
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* q='john bill' => 2 tokens 'john' 'bill'
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* Special characters for MySql full text search (+,<,>,~) appear in the token modifiers.
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* The query can contain a phrase: 'Pierre "New York"' will return 'pierre' qnd 'new york'.
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*
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* @param string $q
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* @param array &$qtokens
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* @param array &$qtoken_modifiers
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*/
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function analyse_qsearch($q, &$qtokens, &$qtoken_modifiers)
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{
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$q = stripslashes($q);
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$tokens = array();
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$token_modifiers = array();
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$crt_token = "";
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$crt_token_modifier = 0;
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for ($i=0; $i<strlen($q); $i++)
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{
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$ch = $q[$i];
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if ( ($crt_token_modifier&QST_QUOTED)==0)
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{
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if ($ch=='"')
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{
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if (strlen($crt_token))
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{
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$tokens[] = $crt_token; $token_modifiers[] = $crt_token_modifier;
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$crt_token = ""; $crt_token_modifier = 0;
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}
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$crt_token_modifier |= QST_QUOTED;
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}
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elseif ( strcspn($ch, '*+-><~')==0 )
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{ //special full text modifier
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if (strlen($crt_token))
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{
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$crt_token .= $ch;
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}
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else
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{
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if ( $ch=='*' )
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$crt_token_modifier |= QST_WILDCARD_BEGIN;
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if ( $ch=='-' )
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$crt_token_modifier |= QST_NOT;
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}
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}
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elseif (preg_match('/[\s,.;!\?]+/', $ch))
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{ // white space
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if (strlen($crt_token))
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{
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$tokens[] = $crt_token; $token_modifiers[] = $crt_token_modifier;
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$crt_token = "";
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}
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$crt_token_modifier = 0;
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}
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else
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{
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$crt_token .= $ch;
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}
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}
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else // qualified with quotes
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{
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if ($ch=='"')
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{
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if ($i+1 < strlen($q) && $q[$i+1]=='*')
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{
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$crt_token_modifier |= QST_WILDCARD_END;
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$i++;
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}
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$tokens[] = $crt_token; $token_modifiers[] = $crt_token_modifier;
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$crt_token = ""; $crt_token_modifier = 0;
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$state=0;
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}
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else
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$crt_token .= $ch;
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}
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}
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if (strlen($crt_token))
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{
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$tokens[] = $crt_token;
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$token_modifiers[] = $crt_token_modifier;
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}
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$qtokens = array();
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$qtoken_modifiers = array();
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for ($i=0; $i<count($tokens); $i++)
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{
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if ( !($token_modifiers[$i] & QST_QUOTED) )
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{
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if ( substr($tokens[$i], -1)=='*' )
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{
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$tokens[$i] = rtrim($tokens[$i], '*');
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$token_modifiers[$i] |= QST_WILDCARD_END;
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}
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}
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if ( strlen($tokens[$i])==0)
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continue;
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$qtokens[] = $tokens[$i];
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$qtoken_modifiers[] = $token_modifiers[$i];
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}
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}
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/**
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* Returns the LIKE SQL clause corresponding to the quick search query
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* that has been split into tokens.
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* for example file LIKE '%john%' OR file LIKE '%bill%'.
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*
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* @param array $tokens
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* @param array $token_modifiers
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* @param string $field
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* @return string|null
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*/
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function get_qsearch_like_clause($tokens, $token_modifiers, $field)
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{
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$clauses = array();
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for ($i=0; $i<count($tokens); $i++)
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{
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$token = trim($tokens[$i], '%');
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if ($token_modifiers[$i]&QST_NOT)
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continue;
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if ( strlen($token)==0 )
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continue;
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$token = addslashes($token);
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$token = str_replace( array('%','_'), array('\\%','\\_'), $token); // escape LIKE specials %_
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$clauses[] = $field.' LIKE \'%'.$token.'%\'';
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}
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return count($clauses) ? '('.implode(' OR ', $clauses).')' : null;
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}
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/**
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* Returns tags corresponding to the quick search query that has been split into tokens.
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*
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* @param array $tokens
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* @param array $token_modifiers
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* @param array &$token_tag_ids
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* @param array &$not_tag_ids
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* @param array &$all_tags
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*/
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function get_qsearch_tags($tokens, $token_modifiers, &$token_tag_ids, &$not_tag_ids, &$all_tags)
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{
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$token_tag_ids = array_fill(0, count($tokens), array() );
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$not_tag_ids = $all_tags = array();
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$token_tag_scores = $token_tag_ids;
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$transliterated_tokens = array();
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foreach ($tokens as $token)
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{
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$transliterated_tokens[] = transliterate($token);
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}
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$query = '
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SELECT t.*, COUNT(image_id) AS counter
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FROM '.TAGS_TABLE.' t
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INNER JOIN '.IMAGE_TAG_TABLE.' ON id=tag_id
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GROUP BY id';
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$result = pwg_query($query);
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while ($tag = pwg_db_fetch_assoc($result))
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{
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$transliterated_tag = transliterate($tag['name']);
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// find how this tag matches query tokens
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for ($i=0; $i<count($tokens); $i++)
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{
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$transliterated_token = $transliterated_tokens[$i];
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$match = false;
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$pos = 0;
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while ( ($pos = strpos($transliterated_tag, $transliterated_token, $pos)) !== false)
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{
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if ( ($token_modifiers[$i]&QST_WILDCARD)==QST_WILDCARD )
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{// wildcard in this token
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$match = 1;
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break;
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}
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$token_len = strlen($transliterated_token);
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// search begin of word
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$wbegin_len=0; $wbegin_char=' ';
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while ($pos-$wbegin_len > 0)
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{
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if (! is_word_char($transliterated_tag[$pos-$wbegin_len-1]) )
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{
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$wbegin_char = $transliterated_tag[$pos-$wbegin_len-1];
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break;
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}
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$wbegin_len++;
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}
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// search end of word
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$wend_len=0; $wend_char=' ';
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while ($pos+$token_len+$wend_len < strlen($transliterated_tag))
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{
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if (! is_word_char($transliterated_tag[$pos+$token_len+$wend_len]) )
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{
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$wend_char = $transliterated_tag[$pos+$token_len+$wend_len];
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break;
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}
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$wend_len++;
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}
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$this_score = 0;
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if ( ($token_modifiers[$i]&QST_WILDCARD)==0 )
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{// no wildcard begin or end
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if ($token_len <= 2)
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{// search for 1 or 2 characters must match exactly to avoid retrieving too much data
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if ($wbegin_len==0 && $wend_len==0 && !is_odd_wbreak_begin($wbegin_char) && !is_odd_wbreak_end($wend_char) )
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$this_score = 1;
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}
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elseif ($token_len == 3)
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{
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if ($wbegin_len==0)
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$this_score = $token_len / ($token_len + $wend_len);
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}
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else
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{
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$this_score = $token_len / ($token_len + 1.1 * $wbegin_len + 0.9 * $wend_len);
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}
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}
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if ($this_score>0)
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$match = max($match, $this_score );
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$pos++;
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}
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if ($match)
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{
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$tag_id = (int)$tag['id'];
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$all_tags[$tag_id] = $tag;
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$token_tag_ids[$i][] = $tag_id;
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$token_tag_scores[$i][] = $match;
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}
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}
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}
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// process not tags
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for ($i=0; $i<count($tokens); $i++)
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{
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|
if ( ! ($token_modifiers[$i]&QST_NOT) )
|
|
continue;
|
|
|
|
array_multisort($token_tag_scores[$i], SORT_DESC|SORT_NUMERIC, $token_tag_ids[$i]);
|
|
|
|
for ($j=0; $j<count($token_tag_scores[$i]); $j++)
|
|
{
|
|
if ($token_tag_scores[$i][$j] < 0.8)
|
|
break;
|
|
if ($j>0 && $token_tag_scores[$i][$j] < $token_tag_scores[$i][0])
|
|
break;
|
|
$tag_id = $token_tag_ids[$i][$j];
|
|
if ( isset($all_tags[$tag_id]) )
|
|
{
|
|
unset($all_tags[$tag_id]);
|
|
$not_tag_ids[] = $tag_id;
|
|
}
|
|
}
|
|
$token_tag_ids[$i] = array();
|
|
}
|
|
|
|
// process regular tags
|
|
for ($i=0; $i<count($tokens); $i++)
|
|
{
|
|
if ( $token_modifiers[$i]&QST_NOT )
|
|
continue;
|
|
|
|
array_multisort($token_tag_scores[$i], SORT_DESC|SORT_NUMERIC, $token_tag_ids[$i]);
|
|
|
|
$counter = 0;
|
|
for ($j=0; $j<count($token_tag_scores[$i]); $j++)
|
|
{
|
|
$tag_id = $token_tag_ids[$i][$j];
|
|
if ( ! isset($all_tags[$tag_id]) )
|
|
{
|
|
array_splice($token_tag_ids[$i], $j, 1);
|
|
array_splice($token_tag_scores[$i], $j, 1);
|
|
$j--;
|
|
continue;
|
|
}
|
|
|
|
$counter += $all_tags[$tag_id]['counter'];
|
|
if ($counter > 200 && $j>0 && $token_tag_scores[$i][0] > $token_tag_scores[$i][$j] )
|
|
{// "many" images in previous tags and starting from this tag is less relevent
|
|
array_splice($token_tag_ids[$i], $j);
|
|
array_splice($token_tag_scores[$i], $j);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
usort($all_tags, 'tag_alpha_compare');
|
|
foreach ( $all_tags as &$tag )
|
|
{
|
|
$tag['name'] = trigger_event('render_tag_name', $tag['name'], $tag);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns the search results corresponding to a quick/query search.
|
|
* A quick/query search returns many items (search is not strict), but results
|
|
* are sorted by relevance unless $super_order_by is true. Returns:
|
|
* array (
|
|
* 'items' => array of matching images
|
|
* 'qs' => array(
|
|
* 'matching_tags' => array of matching tags
|
|
* 'matching_cats' => array of matching categories
|
|
* 'matching_cats_no_images' =>array(99) - matching categories without images
|
|
* )
|
|
* )
|
|
*
|
|
* @param string $q
|
|
* @param bool $super_order_by
|
|
* @param string $images_where optional additional restriction on images table
|
|
* @return array
|
|
*/
|
|
function get_quick_search_results($q, $super_order_by, $images_where='')
|
|
{
|
|
global $user, $conf;
|
|
|
|
$search_results =
|
|
array(
|
|
'items' => array(),
|
|
'qs' => array('q'=>stripslashes($q)),
|
|
);
|
|
$q = trim($q);
|
|
analyse_qsearch($q, $tokens, $token_modifiers);
|
|
if (count($tokens)==0)
|
|
{
|
|
return $search_results;
|
|
}
|
|
$debug[] = '<!--'.count($tokens).' tokens';
|
|
|
|
$q_like_field = '@@__db_field__@@'; //something never in a search
|
|
$q_like_clause = get_qsearch_like_clause($tokens, $token_modifiers, $q_like_field );
|
|
|
|
// Step 1 - first we find matches in #images table ===========================
|
|
$where_clauses='MATCH(i.name, i.comment) AGAINST( \''.$q.'\' IN BOOLEAN MODE)';
|
|
if (!empty($q_like_clause))
|
|
{
|
|
$where_clauses .= '
|
|
OR '. str_replace($q_like_field, 'CONVERT(file, CHAR)', $q_like_clause);
|
|
$where_clauses = '('.$where_clauses.')';
|
|
}
|
|
$where_clauses = array($where_clauses);
|
|
if (!empty($images_where))
|
|
{
|
|
$where_clauses[]='('.$images_where.')';
|
|
}
|
|
$where_clauses[] .= get_sql_condition_FandF
|
|
(
|
|
array( 'visible_images' => 'i.id' ), null, true
|
|
);
|
|
$query = '
|
|
SELECT i.id,
|
|
MATCH(i.name, i.comment) AGAINST( \''.$q.'\' IN BOOLEAN MODE) AS weight
|
|
FROM '.IMAGES_TABLE.' i
|
|
WHERE '.implode("\n AND ", $where_clauses);
|
|
|
|
$by_weights=array();
|
|
$result = pwg_query($query);
|
|
while ($row = pwg_db_fetch_assoc($result))
|
|
{ // weight is important when sorting images by relevance
|
|
if ($row['weight'])
|
|
{
|
|
$by_weights[(int)$row['id']] = 2*$row['weight'];
|
|
}
|
|
else
|
|
{//full text does not match but file name match
|
|
$by_weights[(int)$row['id']] = 2;
|
|
}
|
|
}
|
|
$debug[] = count($by_weights).' fulltext';
|
|
if (!empty($by_weights))
|
|
{
|
|
$debug[] = 'ft score min:'.min($by_weights).' max:'.max($by_weights);
|
|
}
|
|
|
|
|
|
// Step 2 - get the tags and the images for tags
|
|
get_qsearch_tags($tokens, $token_modifiers, $token_tag_ids, $not_tag_ids, $search_results['qs']['matching_tags']);
|
|
$debug[] = count($search_results['qs']['matching_tags']).' tags';
|
|
|
|
for ($i=0; $i<count($token_tag_ids); $i++)
|
|
{
|
|
$tag_ids = $token_tag_ids[$i];
|
|
$debug[] = count($tag_ids).' unique tags';
|
|
|
|
if (!empty($tag_ids))
|
|
{
|
|
$tag_photo_count=0;
|
|
$query = '
|
|
SELECT image_id FROM '.IMAGE_TAG_TABLE.'
|
|
WHERE tag_id IN ('.implode(',',$tag_ids).')
|
|
GROUP BY image_id';
|
|
$result = pwg_query($query);
|
|
while ($row = pwg_db_fetch_assoc($result))
|
|
{ // weight is important when sorting images by relevance
|
|
$image_id=(int)$row['image_id'];
|
|
@$by_weights[$image_id] += 1;
|
|
$tag_photo_count++;
|
|
}
|
|
$debug[] = $tag_photo_count.' photos for tag';
|
|
$debug[] = count($by_weights).' photos after';
|
|
}
|
|
}
|
|
|
|
// Step 3 - search categories corresponding to the query $q ==================
|
|
$query = '
|
|
SELECT id, name, permalink, nb_images
|
|
FROM '.CATEGORIES_TABLE.'
|
|
INNER JOIN '.USER_CACHE_CATEGORIES_TABLE.' ON id=cat_id
|
|
WHERE user_id='.$user['id'].'
|
|
AND MATCH(name, comment) AGAINST( \''.$q.'\' IN BOOLEAN MODE)'.
|
|
get_sql_condition_FandF (
|
|
array( 'visible_categories' => 'cat_id' ), "\n AND"
|
|
);
|
|
$result = pwg_query($query);
|
|
while ($row = pwg_db_fetch_assoc($result))
|
|
{ // weight is important when sorting images by relevance
|
|
if ($row['nb_images']==0)
|
|
{
|
|
$search_results['qs']['matching_cats_no_images'][] = $row;
|
|
}
|
|
else
|
|
{
|
|
$search_results['qs']['matching_cats'][$row['id']] = $row;
|
|
}
|
|
}
|
|
$debug[] = count(@$search_results['qs']['matching_cats']).' albums with images';
|
|
|
|
if ( empty($by_weights) and empty($search_results['qs']['matching_cats']) )
|
|
{
|
|
return $search_results;
|
|
}
|
|
|
|
if (!empty($not_tag_ids))
|
|
{
|
|
$query = '
|
|
SELECT image_id FROM '.IMAGE_TAG_TABLE.'
|
|
WHERE tag_id IN ('.implode(',',$not_tag_ids).')
|
|
GROUP BY image_id';
|
|
$result = pwg_query($query);
|
|
while ($row = pwg_db_fetch_row($result))
|
|
{
|
|
$id = $row[0];
|
|
unset($by_weights[$id]);
|
|
}
|
|
$debug[] = count($by_weights).' after not tags';
|
|
}
|
|
// Step 4 - now we have $by_weights ( array image id => weight ) that need
|
|
// permission checks and/or matching categories to get images from
|
|
$where_clauses = array();
|
|
if ( !empty($by_weights) )
|
|
{
|
|
$where_clauses[]='i.id IN ('
|
|
. implode(',', array_keys($by_weights)) . ')';
|
|
}
|
|
if ( !empty($search_results['qs']['matching_cats']) )
|
|
{
|
|
$where_clauses[]='category_id IN ('.
|
|
implode(',',array_keys($search_results['qs']['matching_cats'])).')';
|
|
}
|
|
$where_clauses = array( '('.implode("\n OR ",$where_clauses).')' );
|
|
if (!empty($images_where))
|
|
{
|
|
$where_clauses[]='('.$images_where.')';
|
|
}
|
|
$where_clauses[] = get_sql_condition_FandF(
|
|
array
|
|
(
|
|
'forbidden_categories' => 'category_id',
|
|
'visible_categories' => 'category_id',
|
|
'visible_images' => 'i.id'
|
|
),
|
|
null,true
|
|
);
|
|
|
|
$query = '
|
|
SELECT DISTINCT(id)
|
|
FROM '.IMAGES_TABLE.' i
|
|
INNER JOIN '.IMAGE_CATEGORY_TABLE.' AS ic ON id = ic.image_id
|
|
WHERE '.implode("\n AND ", $where_clauses)."\n".
|
|
$conf['order_by'];
|
|
|
|
$allowed_images = array_from_query( $query, 'id');
|
|
|
|
$debug[] = count($allowed_images).' final photo count -->';
|
|
global $template;
|
|
$template->append('footer_elements', implode(', ', $debug) );
|
|
|
|
if ( $super_order_by or empty($by_weights) )
|
|
{
|
|
$search_results['items'] = $allowed_images;
|
|
return $search_results;
|
|
}
|
|
|
|
$allowed_images = array_flip( $allowed_images );
|
|
$divisor = 5.0 * count($allowed_images);
|
|
foreach ($allowed_images as $id=> &$rank )
|
|
{
|
|
$weight = isset($by_weights[$id]) ? $by_weights[$id] : 1;
|
|
$weight -= $rank/$divisor;
|
|
$rank = $weight;
|
|
}
|
|
unset($rank);
|
|
|
|
arsort($allowed_images, SORT_NUMERIC);
|
|
$search_results['items'] = array_keys($allowed_images);
|
|
return $search_results;
|
|
}
|
|
|
|
/**
|
|
* Returns an array of 'items' corresponding to the search id.
|
|
* It can be either a quick search or a regular search.
|
|
*
|
|
* @param int $search_id
|
|
* @param bool $super_order_by
|
|
* @param string $images_where optional aditional restriction on images table
|
|
* @return array
|
|
*/
|
|
function get_search_results($search_id, $super_order_by, $images_where='')
|
|
{
|
|
$search = get_search_array($search_id);
|
|
if ( !isset($search['q']) )
|
|
{
|
|
$result['items'] = get_regular_search_results($search, $images_where);
|
|
return $result;
|
|
}
|
|
else
|
|
{
|
|
return get_quick_search_results($search['q'], $super_order_by, $images_where);
|
|
}
|
|
}
|
|
|
|
?>
|