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-rw-r--r--include/functions_search.inc.php194
1 files changed, 183 insertions, 11 deletions
diff --git a/include/functions_search.inc.php b/include/functions_search.inc.php
index 7e55160c8..ce2e6115b 100644
--- a/include/functions_search.inc.php
+++ b/include/functions_search.inc.php
@@ -73,13 +73,11 @@ SELECT rules
* Search rules are stored in search table as a serialized array. This array
* need to be transformed into an SQL clause to be used in queries.
*
- * @param int search_id
+ * @param array search
* @return string
*/
-function get_sql_search_clause($search_id)
+function get_sql_search_clause($search)
{
- $search = get_search_array($search_id);
-
// SQL where clauses are stored in $clauses array during query
// construction
$clauses = array();
@@ -212,17 +210,17 @@ function get_sql_search_clause($search_id)
}
/**
- * returns the list of items corresponding to the search id
+ * returns the list of items corresponding to the advanced search array
*
- * @param int search id
+ * @param array search
* @return array
*/
-function get_search_items($search_id)
+function get_regular_search_results($search)
{
$items = array();
-
- $search_clause = get_sql_search_clause($search_id);
-
+
+ $search_clause = get_sql_search_clause($search);
+
if (!empty($search_clause))
{
$query = '
@@ -269,7 +267,181 @@ SELECT DISTINCT(id)
}
}
}
-
+
return $items;
}
+
+
+if (!function_exists('array_intersect_key')) {
+ function array_intersect_key()
+ {
+ $arrs = func_get_args();
+ $result = array_shift($arrs);
+ foreach ($arrs as $array) {
+ foreach ($result as $key => $v) {
+ if (!array_key_exists($key, $array)) {
+ unset($result[$key]);
+ }
+ }
+ }
+ return $result;
+ }
+}
+
+
+function get_qsearch_like_clause($q, $field)
+{
+ $tokens = preg_split('/[\s,.;!\?]+/', $q);
+ for ($i=0; $i<count($tokens); $i++)
+ {
+ $tokens[$i]=str_replace('*','%', $tokens[$i]);
+ if (preg_match('/^[+<>]/',$tokens[$i]) )
+ $tokens[$i]=substr($tokens[$i], 1);
+ else if (substr($tokens[$i], 0, 1)=='-')
+ {
+ unset($tokens[$i]);
+ $i--;
+ }
+ }
+
+ if (!empty($tokens))
+ {
+ $query = '(';
+ for ($i=0; $i<count($tokens); $i++)
+ {
+ if ($i>0) $query .= 'OR ';
+ $query .= ' '.$field.' LIKE "%'.$tokens[$i].'%" ';
+ }
+ $query .= ')';
+ return $query;
+ }
+ return null;
+}
+
+
+/**
+ * returns the search results corresponding to a quick search
+ *
+ * @param string q
+ * @return array
+ */
+function get_quick_search_results($q)
+{
+ global $user, $page;
+ $search_results = array();
+
+ $q_like_clause = get_qsearch_like_clause($q, 'CONVERT(name, CHAR)' );
+ $by_tag_weights=array();
+ if (!empty($q_like_clause))
+ {
+ $query = '
+SELECT id
+ FROM '.TAGS_TABLE.'
+ WHERE '.$q_like_clause;
+ $tag_ids = array_from_query( $query, 'id');
+ if (!empty($tag_ids))
+ {
+ $query = '
+SELECT image_id, COUNT(tag_id) AS q
+ FROM '.IMAGE_TAG_TABLE.'
+ WHERE tag_id IN ('.implode(',',$tag_ids).')
+ GROUP BY image_id';
+ $result = pwg_query($query);
+ while ($row = mysql_fetch_array($result))
+ {
+ $by_tag_weights[(int)$row['image_id']] = $row['q'];
+ }
+ }
+ }
+
+ $query = '
+SELECT
+ i.id, i.file, CAST( CONCAT_WS(" ",
+ IFNULL(i.name,""),
+ IFNULL(i.comment,""),
+ IFNULL(GROUP_CONCAT(DISTINCT co.content),""),
+ IFNULL(GROUP_CONCAT(DISTINCT c.dir),""),
+ IFNULL(GROUP_CONCAT(DISTINCT c.name),""),
+ IFNULL(GROUP_CONCAT(DISTINCT c.comment),"") ) AS CHAR) AS ft
+FROM (
+ (
+ '.IMAGES_TABLE.' i LEFT JOIN '.COMMENTS_TABLE.' co on i.id=co.image_id
+ )
+ INNER JOIN
+ '.IMAGE_CATEGORY_TABLE.' ic on ic.image_id=i.id
+ )
+ INNER JOIN
+ '.CATEGORIES_TABLE.' c on c.id=ic.category_id
+WHERE category_id NOT IN ('.$user['forbidden_categories'].')
+GROUP BY i.id';
+
+ $query = 'SELECT id, MATCH(ft) AGAINST( "'.$q.'" IN BOOLEAN MODE) AS q FROM ('.$query.') AS Y
+WHERE MATCH(ft) AGAINST( "'.$q.'" IN BOOLEAN MODE)';
+
+ $q_like_clause = get_qsearch_like_clause($q, 'file' );
+ if (! empty($q_like_clause) )
+ {
+ $query .= ' OR '.$q_like_clause;
+ }
+
+ $by_weights=array();
+ $result = pwg_query($query);
+ while ($row = mysql_fetch_array($result))
+ {
+ $by_weights[(int)$row['id']] = $row['q'] ? $row['q'] : 0;
+ }
+
+ foreach ( $by_weights as $image=>$w )
+ {
+ $by_tag_weights[$image] = 2*$w+ (isset($by_tag_weights[$image])?$by_tag_weights[$image]:0);
+ }
+
+ if ( empty($by_tag_weights) or isset($page['super_order_by']) )
+ {
+ if (! isset($page['super_order_by']) )
+ {
+ arsort($by_tag_weights, SORT_NUMERIC);
+ $search_results['as_is']=1;
+ }
+ $search_results['items'] = array_keys($by_tag_weights);
+ }
+ else
+ {
+ $query = '
+SELECT DISTINCT(id)
+ FROM '.IMAGES_TABLE.'
+ INNER JOIN '.IMAGE_CATEGORY_TABLE.' AS ic ON id = ic.image_id
+ WHERE id IN ('.implode(',', array_keys($by_tag_weights) ).')
+ AND category_id NOT IN ('.$user['forbidden_categories'].')';
+
+ $allowed_image_ids = array_from_query( $query, 'id');
+ $by_tag_weights = array_intersect_key($by_tag_weights, array_flip($allowed_image_ids));
+ arsort($by_tag_weights, SORT_NUMERIC);
+ $search_results = array(
+ 'items'=>array_keys($by_tag_weights),
+ 'as_is'=>1
+ );
+ }
+ return $search_results;
+}
+
+/**
+ * returns an array of 'items' corresponding to the search id
+ *
+ * @param int search id
+ * @return array
+ */
+function get_search_results($search_id)
+{
+ $search = get_search_array($search_id);
+ if ( !isset($search['q']) )
+ {
+ $result['items'] = get_regular_search_results($search);
+ return $result;
+ }
+ else
+ {
+ return get_quick_search_results($search['q']);
+ }
+}
?> \ No newline at end of file