diff options
Diffstat (limited to 'include/functions.inc.php')
| -rw-r--r-- | include/functions.inc.php | 186 |
1 files changed, 184 insertions, 2 deletions
diff --git a/include/functions.inc.php b/include/functions.inc.php index 556c62582..f5710bbdd 100644 --- a/include/functions.inc.php +++ b/include/functions.inc.php @@ -741,8 +741,8 @@ function l10n($key) } /** - * returns the corresponding value from $themeconf if existing. Else, the key is - * returned + * returns the corresponding value from $themeconf if existing. Else, the + * key is returned * * @param string key * @return string @@ -753,4 +753,186 @@ function get_themeconf($key) return $themeconf[$key]; } + +/** + * Prepends and appends a string at each value of the given array. + * + * @param array + * @param string prefix to each array values + * @param string suffix to each array values + */ +function prepend_append_array_items($array, $prepend_str, $append_str) +{ + array_walk( + $array, + create_function('&$s', '$s = "'.$prepend_str.'".$s."'.$append_str.'";') + ); + + return $array; +} + +/** + * returns the SQL clause from a search identifier + * + * Search rules are stored in search table as a serialized array. This array + * need to be transformed into an SQL clause to be used in queries. + * + * @param int search_id + * @return string + */ +function get_sql_search_clause($search_id) +{ + if (!is_numeric($search_id)) + { + die('Search id must be an integer'); + } + + $query = ' +SELECT rules + FROM '.SEARCH_TABLE.' + WHERE id = '.$_GET['search'].' +;'; + list($serialized_rules) = mysql_fetch_row(pwg_query($query)); + + $search = unserialize($serialized_rules); + +// echo '<pre>'; +// print_r($search); +// echo '</pre>'; + + // SQL where clauses are stored in $clauses array during query + // construction + $clauses = array(); + + foreach (array('file','name','comment','keywords','author') 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 + $local_clauses = prepend_append_array_items($local_clauses, '(', ')'); + + array_push( + $clauses, + implode( + ' '.$search['fields'][$textfield]['mode'].' ', + $local_clauses + ) + ); + } + } + + if (isset($search['fields']['allwords'])) + { + $fields = array('file', 'name', 'comment', 'keywords', 'author'); + // in the OR mode, request bust be : + // ((field1 LIKE '%word1%' OR field2 LIKE '%word1%') + // OR (field1 LIKE '%word2%' OR field2 LIKE '%word2%')) + // + // in the AND mode : + // ((field1 LIKE '%word1%' OR field2 LIKE '%word1%') + // AND (field1 LIKE '%word2%' OR field2 LIKE '%word2%')) + $word_clauses = array(); + foreach ($search['fields']['allwords']['words'] as $word) + { + $field_clauses = array(); + foreach ($fields as $field) + { + array_push($field_clauses, $field." LIKE '%".$word."%'"); + } + // adds brackets around where clauses + array_push( + $word_clauses, + implode( + "\n OR ", + $field_clauses + ) + ); + } + + array_walk( + $word_clauses, + create_function('&$s','$s="(".$s.")";') + ); + + array_push( + $clauses, + "\n ". + implode( + "\n ". + $search['fields']['allwords']['mode']. + "\n ", + $word_clauses + ) + ); + } + + foreach (array('date_available', 'date_creation') as $datefield) + { + if (isset($search['fields'][$datefield])) + { + array_push( + $clauses, + $datefield." = '".$search['fields'][$datefield]['date']."'" + ); + } + + foreach (array('after','before') as $suffix) + { + $key = $datefield.'-'.$suffix; + + if (isset($search['fields'][$key])) + { + array_push( + $clauses, + + $datefield. + ($suffix == 'after' ? ' >' : ' <'). + ($search['fields'][$key]['inc'] ? '=' : ''). + " '".$search['fields'][$key]['date']."'" + + ); + } + } + } + + if (isset($search['fields']['cat'])) + { + if ($search['fields']['cat']['sub_inc']) + { + // searching all the categories id of sub-categories + $cat_ids = get_subcat_ids($search['fields']['cat']['words']); + } + else + { + $cat_ids = $search['fields']['cat']['words']; + } + + $local_clause = 'category_id IN ('.implode(',', $cat_ids).')'; + array_push($clauses, $local_clause); + } + + // adds brackets around where clauses + $clauses = prepend_append_array_items($clauses, '(', ')'); + + $where_separator = + implode( + "\n ".$search['mode'].' ', + $clauses + ); + + $search_clause = $where_separator; + + if (isset($forbidden)) + { + $search_clause.= "\n AND ".$forbidden; + } + + return $search_clause; +} ?> |