Example #1
0
function save_related_keywords($keyword, $related)
{
    $keyref = resolve_keyword($keyword, true);
    $s = trim_array(explode(",", $related));
    # Blank existing relationships.
    sql_query("delete from keyword_related where keyword='{$keyref}'");
    if (trim($related) != "") {
        for ($n = 0; $n < count($s); $n++) {
            sql_query("insert into keyword_related (keyword,related) values ('{$keyref}','" . resolve_keyword($s[$n], true) . "')");
        }
    }
    return true;
}
function get_resources_matching_keyword($keyword,$field)
	{
	# Returns an array of resource references for resources matching the given keyword string.
	$keyref=resolve_keyword($keyword);
	return sql_array("select distinct resource value from resource_keyword where keyword='$keyref' and resource_type_field='$field'");
	}
 function index_collection($ref, $index_string = '')
 {
     # Update the keywords index for this collection
     sql_query("delete from collection_keyword where collection='{$ref}'");
     # Remove existing keywords
     # Define an indexable string from the name, themes and keywords.
     global $index_collection_titles;
     if ($index_collection_titles) {
         $indexfields = 'c.ref,c.name,c.keywords';
     } else {
         $indexfields = 'c.ref,c.keywords';
     }
     global $index_collection_creator;
     if ($index_collection_creator) {
         $indexfields .= ',u.fullname';
     }
     // if an index string wasn't supplied, generate one
     if (!strlen($index_string) > 0) {
         $indexarray = sql_query("select {$indexfields} from collection c join user u on u.ref=c.user and c.ref = '{$ref}'");
         for ($i = 0; $i < count($indexarray); $i++) {
             $index_string = "," . implode(',', $indexarray[$i]);
         }
     }
     $keywords = split_keywords($index_string, true);
     for ($n = 0; $n < count($keywords); $n++) {
         if (trim($keywords[$n]) == "") {
             continue;
         }
         $keyref = resolve_keyword($keywords[$n], true);
         sql_query("insert into collection_keyword values ('{$ref}','{$keyref}')");
     }
     // return the number of keywords indexed
     return $n;
 }
function search_form_to_search_query($fields, $fromsearchbar = false)
{
    # Take the data in the the posted search form that contained $fields, and assemble
    # a search query string that can be used for a standard search.
    #
    # This is used to take the advanced search form and assemble it into a search query.
    global $auto_order_checkbox, $checkbox_and;
    $search = "";
    if (getval("year", "") != "") {
        if ($search != "") {
            $search .= ", ";
        }
        $search .= "year:" . getval("year", "");
    }
    if (getval("month", "") != "") {
        if ($search != "") {
            $search .= ", ";
        }
        $search .= "month:" . getval("month", "");
    }
    if (getval("day", "") != "") {
        if ($search != "") {
            $search .= ", ";
        }
        $search .= "day:" . getval("day", "");
    }
    if (getval("allfields", "") != "") {
        if ($search != "") {
            $search .= ", ";
        }
        $search .= join(", ", explode(" ", getvalescaped("allfields", "")));
        # prepend 'all fields' option
    }
    if (getval("resourceids", "") != "") {
        $listsql = "!list" . join(":", trim_array(split_keywords(getvalescaped("resourceids", ""))));
        $search = $listsql . " " . $search;
    }
    for ($n = 0; $n < count($fields); $n++) {
        switch ($fields[$n]["type"]) {
            case 0:
                # -------- Text boxes
            # -------- Text boxes
            case 1:
            case 5:
                $name = "field_" . $fields[$n]["ref"];
                $value = getvalescaped($name, "");
                if ($value != "") {
                    $vs = split_keywords($value);
                    for ($m = 0; $m < count($vs); $m++) {
                        if ($search != "") {
                            $search .= ", ";
                        }
                        $search .= $fields[$n]["name"] . ":" . strtolower($vs[$m]);
                    }
                }
                break;
            case 2:
                # -------- Dropdowns / check lists
            # -------- Dropdowns / check lists
            case 3:
                if ($fields[$n]["display_as_dropdown"]) {
                    # Process dropdown box
                    $name = "field_" . $fields[$n]["ref"];
                    $value = getvalescaped($name, "");
                    if ($value != "") {
                        /*
                        $vs=split_keywords($value);
                        for ($m=0;$m<count($vs);$m++)
                        	{
                        	if ($search!="") {$search.=", ";}
                        	$search.=$fields[$n]["name"] . ":" . strtolower($vs[$m]);
                        	}
                        */
                        if ($search != "") {
                            $search .= ", ";
                        }
                        $search .= $fields[$n]["name"] . ":" . $value;
                    }
                } else {
                    # Process checkbox list
                    $options = trim_array(explode(",", $fields[$n]["options"]));
                    $p = "";
                    $c = 0;
                    for ($m = 0; $m < count($options); $m++) {
                        $name = $fields[$n]["ref"] . "_" . md5($options[$m]);
                        $value = getvalescaped($name, "");
                        if ($value == "yes") {
                            $c++;
                            if ($p != "") {
                                $p .= ";";
                            }
                            $p .= strtolower(i18n_get_translated($options[$m]));
                        }
                    }
                    if ($c == count($options) && !$checkbox_and) {
                        # all options ticked - omit from the search (unless using AND matching)
                        $p = "";
                    }
                    if ($p != "") {
                        if ($search != "") {
                            $search .= ", ";
                        }
                        $search .= $fields[$n]["name"] . ":" . $p;
                    }
                }
                break;
            case 4:
            case 6:
                $name = "field_" . $fields[$n]["ref"];
                $datepart = "";
                if (getval($name . "_year", "") != "") {
                    $datepart .= getval($name . "_year", "");
                    if (getval($name . "_month", "") != "") {
                        $datepart .= "-" . getval($name . "_month", "");
                        if (getval($name . "_day", "") != "") {
                            $datepart .= "-" . getval($name . "_day", "");
                        }
                    }
                }
                if ($datepart != "") {
                    if ($search != "") {
                        $search .= ", ";
                    }
                    $search .= $fields[$n]["name"] . ":" . $datepart;
                }
                break;
            case 7:
            case 9:
                # -------- Category tree and dynamic keywords
                $name = "field_" . $fields[$n]["ref"];
                $value = getvalescaped($name, "");
                $selected = trim_array(explode(",", $value));
                $p = "";
                for ($m = 0; $m < count($selected); $m++) {
                    if ($selected[$m] != "") {
                        if ($p != "") {
                            $p .= ";";
                        }
                        $p .= $selected[$m];
                    }
                    # Resolve keywords to make sure that the value has been indexed prior to including in the search string.
                    $keywords = split_keywords($selected[$m]);
                    foreach ($keywords as $keyword) {
                        resolve_keyword($keyword, true);
                    }
                }
                if ($p != "") {
                    if ($search != "") {
                        $search .= ", ";
                    }
                    $search .= $fields[$n]["name"] . ":" . $p;
                }
                break;
        }
    }
    return $search;
}
function search_form_to_search_query($fields, $fromsearchbar = false)
{
    # Take the data in the the posted search form that contained $fields, and assemble
    # a search query string that can be used for a standard search.
    #
    # This is used to take the advanced search form and assemble it into a search query.
    global $auto_order_checkbox, $checkbox_and;
    $search = "";
    if (getval("year", "") != "") {
        if ($search != "") {
            $search .= ", ";
        }
        $search .= "year:" . getval("year", "");
    }
    if (getval("month", "") != "") {
        if ($search != "") {
            $search .= ", ";
        }
        $search .= "month:" . getval("month", "");
    }
    if (getval("day", "") != "") {
        if ($search != "") {
            $search .= ", ";
        }
        $search .= "day:" . getval("day", "");
    }
    if (getval("startdate", "") != "") {
        if ($search != "") {
            $search .= ", ";
        }
        $search .= "startdate:" . getval("startdate", "");
    }
    if (getval("enddate", "") != "") {
        if ($search != "") {
            $search .= ", ";
        }
        $search .= "enddate:" . getval("enddate", "");
    }
    if (getval("startyear", "") != "") {
        if ($search != "") {
            $search .= ", ";
        }
        $search .= "startdate:" . getval("startyear", "");
        if (getval("startmonth", "") != "") {
            $search .= "-" . getval("startmonth", "");
            if (getval("startday", "") != "") {
                $search .= "-" . getval("startday", "");
            } else {
                $search .= "-01";
            }
        } else {
            $search .= "-01-01";
        }
    }
    if (getval("endyear", "") != "") {
        if ($search != "") {
            $search .= ", ";
        }
        $search .= "enddate:" . getval("endyear", "");
        if (getval("endmonth", "") != "") {
            $search .= "-" . getval("endmonth", "");
            if (getval("endday", "") != "") {
                $search .= "-" . getval("endday", "");
            } else {
                $search .= "-31";
            }
        } else {
            $search .= "-12-31";
        }
    }
    if (getval("allfields", "") != "") {
        if ($search != "") {
            $search .= ", ";
        }
        $search .= join(", ", explode(" ", getvalescaped("allfields", "")));
        # prepend 'all fields' option
    }
    if (getval("resourceids", "") != "") {
        $listsql = "!list" . join(":", trim_array(split_keywords(getvalescaped("resourceids", ""))));
        $search = $listsql . " " . $search;
    }
    // Disabled as was killing search
    //$tmp = hook("richeditsearchquery", "", array($search, $fields, $n)); if($tmp) $search .= $tmp;
    for ($n = 0; $n < count($fields); $n++) {
        switch ($fields[$n]["type"]) {
            case 0:
                # -------- Text boxes
            # -------- Text boxes
            case 1:
            case 5:
            case 8:
                $name = "field_" . $fields[$n]["ref"];
                $value = getvalescaped($name, "");
                if ($value != "") {
                    $vs = split_keywords($value);
                    for ($m = 0; $m < count($vs); $m++) {
                        if ($search != "") {
                            $search .= ", ";
                        }
                        $search .= $fields[$n]["name"] . ":" . strtolower($vs[$m]);
                    }
                }
                break;
            case 2:
                # -------- Dropdowns / check lists
            # -------- Dropdowns / check lists
            case 3:
                if ($fields[$n]["display_as_dropdown"]) {
                    # Process dropdown box
                    $name = "field_" . $fields[$n]["ref"];
                    $value = getvalescaped($name, "");
                    if ($value != "") {
                        /*
                        $vs=split_keywords($value);
                        for ($m=0;$m<count($vs);$m++)
                            {
                            if ($search!="") {$search.=", ";}
                            $search.=$fields[$n]["name"] . ":" . strtolower($vs[$m]);
                            }
                        */
                        if ($search != "") {
                            $search .= ", ";
                        }
                        $search .= $fields[$n]["name"] . ":" . $value;
                    }
                } else {
                    # Process checkbox list
                    $options = trim_array(explode(",", $fields[$n]["options"]));
                    $p = "";
                    $c = 0;
                    for ($m = 0; $m < count($options); $m++) {
                        $name = $fields[$n]["ref"] . "_" . md5($options[$m]);
                        $value = getvalescaped($name, "");
                        if ($value == "yes") {
                            $c++;
                            if ($p != "") {
                                $p .= ";";
                            }
                            $p .= mb_strtolower(i18n_get_translated($options[$m]), 'UTF-8');
                        }
                    }
                    if ($c == count($options) && !$checkbox_and && count($options) > 1) {
                        # all options ticked - omit from the search (unless using AND matching, or there is only one option intended as a boolean selection)
                        $p = "";
                    }
                    if ($p != "") {
                        if ($search != "") {
                            $search .= ", ";
                        }
                        $search .= $fields[$n]["name"] . ":" . $p;
                    }
                }
                break;
            case 4:
                # --------  Date and optional time
            # --------  Date and optional time
            case 6:
                # --------  Expiry Date
            # --------  Expiry Date
            case 10:
                #--------  Date
                $name = "field_" . $fields[$n]["ref"];
                $datepart = "";
                $value = "";
                if (strpos($search, $name . ":") === false) {
                    $key_year = $name . "_year";
                    $value_year = getvalescaped($key_year, "");
                    if ($value_year != "") {
                        $value = $value_year;
                    } else {
                        $value = "nnnn";
                    }
                    $key_month = $name . "_month";
                    $value_month = getvalescaped($key_month, "");
                    if ($value_month == "") {
                        $value_month .= "nn";
                    }
                    $key_day = $name . "_day";
                    $value_day = getvalescaped($key_day, "");
                    if ($value_day != "") {
                        $value .= "|" . $value_month . "|" . $value_day;
                    } elseif ($value_month != "nn") {
                        $value .= "|" . $value_month;
                    }
                    if ($value !== "nnnn|nn|nn" && $value !== "nnnn") {
                        if ($search != "") {
                            $search .= ", ";
                        }
                        $search .= $fields[$n]["name"] . ":" . $value;
                    }
                }
                //          if (getval($name . "_year","")!="")
                //              {
                //              $datepart.=getval($name . "_year","");
                //              if (getval($name . "_month","")!="")
                //                  {
                //                  $datepart.="-" . getval($name . "_month","");
                //                  if (getval($name . "_day","")!="")
                //                      {
                //                      $datepart.="-" . getval($name . "_day","");
                //                      }
                //                  }
                //              }
                #Date range search -  start date
                if (getval($name . "_startyear", "") != "") {
                    $datepart .= "start" . getval($name . "_startyear", "");
                    if (getval($name . "_startmonth", "") != "") {
                        $datepart .= "-" . getval($name . "_startmonth", "");
                        if (getval($name . "_startday", "") != "") {
                            $datepart .= "-" . getval($name . "_startday", "");
                        } else {
                            $datepart .= "-01";
                        }
                    } else {
                        $datepart .= "-01-01";
                    }
                }
                #Date range search -  end date
                if (getval($name . "_endyear", "") != "") {
                    $datepart .= "end" . getval($name . "_endyear", "");
                    if (getval($name . "_endmonth", "") != "") {
                        $datepart .= "-" . getval($name . "_endmonth", "");
                        if (getval($name . "_endday", "") != "") {
                            $datepart .= "-" . getval($name . "_endday", "");
                        } else {
                            $datepart .= "-31";
                        }
                    } else {
                        $datepart .= "-12-31";
                    }
                }
                if ($datepart != "") {
                    if ($search != "") {
                        $search .= ", ";
                    }
                    $search .= $fields[$n]["name"] . ":range" . $datepart;
                }
                break;
            case 7:
            case 9:
                # -------- Category tree and dynamic keywords
                $name = "field_" . $fields[$n]["ref"];
                $value = getvalescaped($name, "");
                $selected = trim_array(explode(",", $value));
                $p = "";
                for ($m = 0; $m < count($selected); $m++) {
                    if ($selected[$m] != "") {
                        if ($p != "") {
                            $p .= ";";
                        }
                        $p .= $selected[$m];
                    }
                    # Resolve keywords to make sure that the value has been indexed prior to including in the search string.
                    $keywords = split_keywords($selected[$m]);
                    foreach ($keywords as $keyword) {
                        resolve_keyword($keyword, true);
                    }
                }
                if ($p != "") {
                    if ($search != "") {
                        $search .= ", ";
                    }
                    $search .= $fields[$n]["name"] . ":" . $p;
                }
                break;
                // Radio buttons:
            // Radio buttons:
            case 12:
                if ($fields[$n]['display_as_dropdown']) {
                    // Process dropdown or checkboxes behaviour (with only one option ticked):
                    $value = getvalescaped('field_' . $fields[$n]['ref'], '');
                    if ($value != '') {
                        if ($search != '') {
                            $search .= ', ';
                        }
                        $search .= $fields[$n]['name'] . ':' . $value;
                    }
                } else {
                    //Process checkbox behaviour (multiple options selected create a logical AND condition):
                    $options = trim_array(explode(',', $fields[$n]['options']));
                    $p = '';
                    $c = 0;
                    foreach ($options as $option) {
                        $name = 'field_' . $fields[$n]['ref'] . '_' . sha1($option);
                        $value = getvalescaped($name, '');
                        if ($value == $option) {
                            $c++;
                            if ($p != '') {
                                $p .= ';';
                            }
                            $p .= mb_strtolower(i18n_get_translated($option), 'UTF-8');
                        }
                    }
                    // All options ticked - omit from the search (unless using AND matching, or there is only one option intended as a boolean selection)
                    if ($c == count($options) && !$checkbox_and && count($options) > 1) {
                        $p = '';
                    }
                    if ($p != '') {
                        if ($search != '') {
                            $search .= ', ';
                        }
                        $search .= $fields[$n]['name'] . ':' . $p;
                    }
                }
                break;
        }
    }
    return $search;
}
Example #6
0
 function do_search($search, $restypes = "", $order_by = "relevance", $archive = 0, $fetchrows = -1, $sort = "desc", $access_override = false, $starsearch = 0, $ignore_filters = false, $return_disk_usage = false, $recent_search_daylimit = "", $go = false)
 {
     debug("search={$search} {$go} {$fetchrows} restypes={$restypes} archive={$archive} daylimit={$recent_search_daylimit}");
     # globals needed for hooks
     global $sql, $order, $select, $sql_join, $sql_filter, $orig_order, $checkbox_and, $collections_omit_archived, $search_sql_double_pass_mode, $usergroup;
     $alternativeresults = hook("alternativeresults", "", array($go));
     if ($alternativeresults) {
         return $alternativeresults;
     }
     $modifyfetchrows = hook("modifyfetchrows", "", array($fetchrows));
     if ($modifyfetchrows) {
         $fetchrows = $modifyfetchrows;
     }
     # Takes a search string $search, as provided by the user, and returns a results set
     # of matching resources.
     # If there are no matches, instead returns an array of suggested searches.
     # $restypes is optionally used to specify which resource types to search.
     # $access_override is used by smart collections, so that all all applicable resources can be judged regardless of the final access-based results
     # resolve $order_by to something meaningful in sql
     $orig_order = $order_by;
     global $date_field;
     $order = array("relevance" => "score {$sort}, user_rating {$sort}, hit_count {$sort}, field{$date_field} {$sort},r.ref {$sort}", "popularity" => "user_rating {$sort},hit_count {$sort},field{$date_field} {$sort},r.ref {$sort}", "rating" => "r.rating {$sort}, user_rating {$sort}, score {$sort},r.ref {$sort}", "date" => "field{$date_field} {$sort},r.ref {$sort}", "colour" => "has_image {$sort},image_blue {$sort},image_green {$sort},image_red {$sort},field{$date_field} {$sort},r.ref {$sort}", "country" => "country {$sort},r.ref {$sort}", "title" => "title {$sort},r.ref {$sort}", "file_path" => "file_path {$sort},r.ref {$sort}", "resourceid" => "r.ref {$sort}", "resourcetype" => "resource_type {$sort},r.ref {$sort}", "titleandcountry" => "title {$sort},country {$sort}", "random" => "RAND()");
     if (!in_array($order_by, $order) && substr($order_by, 0, 5) == "field") {
         if (!is_numeric(str_replace("field", "", $order_by))) {
             exit("Order field incorrect.");
         }
         $order[$order_by] = "{$order_by} {$sort}";
     }
     hook("modifyorderarray");
     # Recognise a quoted search, which is a search for an exact string
     $quoted_string = false;
     if (substr($search, 0, 1) == "\"" && substr($search, -1, 1) == "\"") {
         $quoted_string = true;
         $search = substr($search, 1, -1);
     }
     $order_by = $order[$order_by];
     $keywords = split_keywords($search);
     $search = trim($search);
     $modified_keywords = hook('dosearchmodifykeywords', '', array($keywords));
     if ($modified_keywords) {
         $keywords = $modified_keywords;
     }
     # -- Build up filter SQL that will be used for all queries
     $sql_filter = "";
     # append resource type filtering
     if ($restypes != "" && substr($restypes, 0, 6) != "Global") {
         if ($sql_filter != "") {
             $sql_filter .= " and ";
         }
         $restypes_x = explode(",", $restypes);
         $sql_filter .= "resource_type in ('" . join("','", $restypes_x) . "')";
     }
     if ($starsearch != "" && $starsearch != 0) {
         if ($sql_filter != "") {
             $sql_filter .= " and ";
         }
         $sql_filter .= "user_rating >= '{$starsearch}'";
     }
     if ($recent_search_daylimit != "") {
         if ($sql_filter != "") {
             $sql_filter .= " and ";
         }
         $sql_filter .= "creation_date > (curdate() - interval " . $recent_search_daylimit . " DAY)";
     }
     # The ability to restrict access by the user that created the resource.
     global $resource_created_by_filter;
     if (isset($resource_created_by_filter) && count($resource_created_by_filter) > 0) {
         $created_filter = "";
         foreach ($resource_created_by_filter as $filter_user) {
             if ($filter_user == -1) {
                 global $userref;
                 $filter_user = $userref;
             }
             # '-1' can be used as an alias to the current user. I.e. they can only see their own resources in search results.
             if ($created_filter != "") {
                 $created_filter .= " or ";
             }
             $created_filter .= "created_by = '" . $filter_user . "'";
         }
         if ($created_filter != "") {
             if ($sql_filter != "") {
                 $sql_filter .= " and ";
             }
             $sql_filter .= "(" . $created_filter . ")";
         }
     }
     # Geo zone exclusion
     # A list of upper/lower long/lat bounds, defining areas that will be excluded from geo search results.
     # Areas are defined as southwest lat, southwest long, northeast lat, northeast long
     global $geo_search_restrict;
     if (count($geo_search_restrict) > 0 && substr($search, 0, 4) == "!geo") {
         foreach ($geo_search_restrict as $zone) {
             if ($sql_filter != "") {
                 $sql_filter .= " and ";
             }
             $sql_filter .= "(geo_lat is null or geo_long is null or not(geo_lat >= '" . $zone[0] . "' and geo_lat<= '" . $zone[2] . "'";
             $sql_filter .= "and geo_long >= '" . $zone[1] . "' and geo_long<= '" . $zone[3] . "'))";
         }
     }
     # If returning disk used by the resources in the search results ($return_disk_usage=true) then wrap the returned SQL in an outer query that sums disk usage.
     $sql_prefix = "";
     $sql_suffix = "";
     if ($return_disk_usage) {
         $sql_prefix = "select sum(disk_usage) total_disk_usage,count(*) total_resources from (";
         $sql_suffix = ") resourcelist";
     }
     # append resource type restrictions based on 'T' permission
     # look for all 'T' permissions and append to the SQL filter.
     global $userpermissions;
     $rtfilter = array();
     for ($n = 0; $n < count($userpermissions); $n++) {
         if (substr($userpermissions[$n], 0, 1) == "T") {
             $rt = substr($userpermissions[$n], 1);
             if (is_numeric($rt) && !$access_override) {
                 $rtfilter[] = $rt;
             }
         }
     }
     if (count($rtfilter) > 0) {
         if ($sql_filter != "") {
             $sql_filter .= " and ";
         }
         $sql_filter .= "resource_type not in (" . join(",", $rtfilter) . ")";
     }
     # append "use" access rights, do not show restricted resources unless admin
     if (!checkperm("v") && !$access_override) {
         if ($sql_filter != "") {
             $sql_filter .= " and ";
         }
         $sql_filter .= "r.access<>'2'";
     }
     # append archive searching (don't do this for collections or !listall, archived resources can still appear in these searches)
     if (substr($search, 0, 8) != "!listall" && substr($search, 0, 11) != "!collection" || $collections_omit_archived && !checkperm("e2")) {
         global $pending_review_visible_to_all;
         if ($archive == 0 && $pending_review_visible_to_all) {
             # If resources pending review are visible to all, when listing only active resources include
             # pending review (-1) resources too.
             if ($sql_filter != "") {
                 $sql_filter .= " and ";
             }
             $sql_filter .= "(archive='0' or archive=-1)";
         } else {
             # Append normal filtering.
             if ($sql_filter != "") {
                 $sql_filter .= " and ";
             }
             $sql_filter .= "archive='{$archive}'";
             global $userref, $pending_submission_searchable_to_all;
             if (!$pending_submission_searchable_to_all && $archive == "-2" && !(checkperm("e-2") && checkperm("t"))) {
                 $sql_filter .= " and created_by='" . $userref . "'";
             }
         }
     }
     # append ref filter - never return the batch upload template (negative refs)
     if ($sql_filter != "") {
         $sql_filter .= " and ";
     }
     $sql_filter .= "r.ref>0";
     # ------ Advanced 'custom' permissions, need to join to access table.
     $sql_join = "";
     global $k;
     if (!checkperm("v") && !$access_override) {
         global $usergroup;
         global $userref;
         # one extra join (rca2) is required for user specific permissions (enabling more intelligent watermarks in search view)
         # the original join is used to gather group access into the search query as well.
         $sql_join = " left outer join resource_custom_access rca2 on r.ref=rca2.resource and rca2.user='******'  and (rca2.user_expires is null or rca2.user_expires>now()) and rca2.access<>2  ";
         $sql_join .= " left outer join resource_custom_access rca on r.ref=rca.resource and rca.usergroup='{$usergroup}' and rca.access<>2 ";
         if ($sql_filter != "") {
             $sql_filter .= " and ";
         }
         # If rca.resource is null, then no matching custom access record was found
         # If r.access is also 3 (custom) then the user is not allowed access to this resource.
         # Note that it's normal for null to be returned if this is a resource with non custom permissions (r.access<>3).
         $sql_filter .= " not(rca.resource is null and r.access=3)";
     }
     # Join thumbs_display_fields to resource table
     $select = "r.ref, r.resource_type, r.has_image, r.is_transcoding, r.hit_count, r.creation_date, r.rating, r.user_rating, r.user_rating_count, r.user_rating_total, r.file_extension, r.preview_extension, r.image_red, r.image_green, r.image_blue, r.thumb_width, r.thumb_height, r.archive, r.access, r.colour_key, r.created_by, r.file_modified, r.file_checksum, r.request_count, r.new_hit_count, r.expiry_notification_sent, r.preview_tweaks, r.file_path ";
     $modified_select = hook("modifyselect");
     if ($modified_select) {
         $select .= $modified_select;
     }
     $modified_select2 = hook("modifyselect2");
     if ($modified_select2) {
         $select .= $modified_select2;
     }
     # Return disk usage for each resource if returning sum of disk usage.
     if ($return_disk_usage) {
         $select .= ",r.disk_usage";
     }
     # select group and user access rights if available, otherwise select null values so columns can still be used regardless
     # this makes group and user specific access available in the basic search query, which can then be passed through access functions
     # in order to eliminate many single queries.
     if (!checkperm("v") && !$access_override) {
         $select .= ",rca.access group_access,rca2.access user_access ";
     } else {
         $select .= ",null group_access, null user_access ";
     }
     # add 'joins' to select (adding them
     $joins = get_resource_table_joins();
     foreach ($joins as $datajoin) {
         $select .= ",r.field" . $datajoin . " ";
     }
     # Prepare SQL to add join table for all provided keywods
     $suggested = $keywords;
     # a suggested search
     $fullmatch = true;
     $c = 0;
     $t = "";
     $t2 = "";
     $score = "";
     $keysearch = true;
     # Do not process if a numeric search is provided (resource ID)
     global $config_search_for_number, $category_tree_search_use_and;
     if ($config_search_for_number && is_numeric($search)) {
         $keysearch = false;
     }
     # Fetch a list of fields that are not available to the user - these must be omitted from the search.
     $hidden_indexed_fields = get_hidden_indexed_fields();
     if ($keysearch) {
         for ($n = 0; $n < count($keywords); $n++) {
             $keyword = $keywords[$n];
             if (substr($keyword, 0, 1) != "!") {
                 global $date_field;
                 $field = 0;
                 #echo "<li>$keyword<br/>";
                 if (strpos($keyword, ":") !== false && !$ignore_filters) {
                     $kw = explode(":", $keyword, 2);
                     global $datefieldinfo_cache;
                     if (isset($datefieldinfo_cache[$kw[0]])) {
                         $datefieldinfo = $datefieldinfo_cache[$kw[0]];
                     } else {
                         $datefieldinfo = sql_query("select ref from resource_type_field where name='" . escape_check($kw[0]) . "' and type IN (4,6,10)", 0);
                         $datefieldinfo_cache[$kw[0]] = $datefieldinfo;
                     }
                     if (count($datefieldinfo)) {
                         $c++;
                         $datefieldinfo = $datefieldinfo[0];
                         $datefield = $datefieldinfo["ref"];
                         if ($sql_filter != "") {
                             $sql_filter .= " and ";
                         }
                         $val = str_replace("n", "_", $kw[1]);
                         $val = str_replace("|", "-", $val);
                         $sql_filter .= "rd" . $c . ".value like '" . $val . "%' ";
                         $sql_join .= " join resource_data rd" . $c . " on rd" . $c . ".resource=r.ref and rd" . $c . ".resource_type_field='" . $datefield . "'";
                     } elseif ($kw[0] == "day") {
                         if ($sql_filter != "") {
                             $sql_filter .= " and ";
                         }
                         $sql_filter .= "r.field{$date_field} like '____-__-" . $kw[1] . "%' ";
                     } elseif ($kw[0] == "month") {
                         if ($sql_filter != "") {
                             $sql_filter .= " and ";
                         }
                         $sql_filter .= "r.field{$date_field} like '____-" . $kw[1] . "%' ";
                     } elseif ($kw[0] == "year") {
                         if ($sql_filter != "") {
                             $sql_filter .= " and ";
                         }
                         $sql_filter .= "r.field{$date_field} like '" . $kw[1] . "%' ";
                     } elseif ($kw[0] == "startdate") {
                         if ($sql_filter != "") {
                             $sql_filter .= " and ";
                         }
                         $sql_filter .= "r.field{$date_field} >= '" . $kw[1] . "' ";
                     } elseif ($kw[0] == "enddate") {
                         if ($sql_filter != "") {
                             $sql_filter .= " and ";
                         }
                         $sql_filter .= "r.field{$date_field} <= '" . $kw[1] . " 23:59:59' ";
                     } elseif (substr($kw[0], 0, 5) == "range") {
                         $c++;
                         $rangefield = substr($kw[0], 6);
                         $daterange = false;
                         if (strpos($kw[1], "start") !== FALSE) {
                             $rangestart = str_replace(" ", "-", $kw[1]);
                             if ($sql_filter != "") {
                                 $sql_filter .= " and ";
                             }
                             $sql_filter .= "rd" . $c . ".value >= '" . substr($rangestart, strpos($rangestart, "start") + 5, 10) . "'";
                         }
                         if (strpos($kw[1], "end") !== FALSE) {
                             $rangeend = str_replace(" ", "-", $kw[1]);
                             if ($sql_filter != "") {
                                 $sql_filter .= " and ";
                             }
                             $sql_filter .= "rd" . $c . ".value <= '" . substr($rangeend, strpos($rangeend, "end") + 3, 10) . " 23:59:59'";
                         }
                         $sql_join .= " join resource_data rd" . $c . " on rd" . $c . ".resource=r.ref and rd" . $c . ".resource_type_field='" . $rangefield . "'";
                     } else {
                         $ckeywords = explode(";", $kw[1]);
                         # Fetch field info
                         global $fieldinfo_cache;
                         if (isset($fieldinfo_cache[$kw[0]])) {
                             $fieldinfo = $fieldinfo_cache[$kw[0]];
                         } else {
                             $fieldinfo = sql_query("select ref,type from resource_type_field where name='" . escape_check($kw[0]) . "'", 0);
                             $fieldinfo_cache[$kw[0]] = $fieldinfo;
                         }
                         if (count($fieldinfo) == 0) {
                             debug("Field short name not found.");
                             return false;
                         } elseif (in_array($fieldinfo[0]["ref"], $hidden_indexed_fields)) {
                             # Attempt to directly search field that the user does not have access to.
                             return false;
                         }
                         $fieldinfo = $fieldinfo[0];
                         $field = $fieldinfo["ref"];
                         # Special handling for dates
                         if ($fieldinfo["type"] == 4 || $fieldinfo["type"] == 6 || $fieldinfo["type"] == 10) {
                             $ckeywords = array(str_replace(" ", "-", $kw[1]));
                         }
                         #special SQL generation for category trees to use AND instead of OR
                         if ($fieldinfo["type"] == 7 && $category_tree_search_use_and || $fieldinfo["type"] == 2 && $checkbox_and) {
                             for ($m = 0; $m < count($ckeywords); $m++) {
                                 $keyref = resolve_keyword($ckeywords[$m]);
                                 if (!($keyref === false)) {
                                     $c++;
                                     # Add related keywords
                                     $related = get_related_keywords($keyref);
                                     $relatedsql = "";
                                     for ($r = 0; $r < count($related); $r++) {
                                         $relatedsql .= " or k" . $c . ".keyword='" . $related[$r] . "'";
                                     }
                                     # Form join
                                     //$sql_join.=" join (SELECT distinct k".$c.".resource,k".$c.".hit_count from resource_keyword k".$c." where k".$c.".keyword='$keyref' $relatedsql) t".$c." ";
                                     $sql_join .= " join resource_keyword k" . $c . " on k" . $c . ".resource=r.ref and k" . $c . ".resource_type_field='" . $field . "' and (k" . $c . ".keyword='{$keyref}' {$relatedsql})";
                                     if ($score != "") {
                                         $score .= "+";
                                     }
                                     $score .= "k" . $c . ".hit_count";
                                     # Log this
                                     daily_stat("Keyword usage", $keyref);
                                 }
                             }
                         } else {
                             $c++;
                             $sql_join .= " join resource_keyword k" . $c . " on k" . $c . ".resource=r.ref and k" . $c . ".resource_type_field='" . $field . "'";
                             if ($score != "") {
                                 $score .= "+";
                             }
                             $score .= "k" . $c . ".hit_count";
                             # work through all options in an OR approach for multiple selects on the same field
                             # where k.resource=type_field=$field and (k*.keyword=3 or k*.keyword=4) etc
                             $keyjoin = "";
                             for ($m = 0; $m < count($ckeywords); $m++) {
                                 $keyref = resolve_keyword($ckeywords[$m]);
                                 if ($keyref === false) {
                                     $keyref = -1;
                                 }
                                 if ($m != 0) {
                                     $keyjoin .= " OR ";
                                 }
                                 $keyjoin .= "k" . $c . ".keyword='{$keyref}'";
                                 # Also add related.
                                 $related = get_related_keywords($keyref);
                                 for ($o = 0; $o < count($related); $o++) {
                                     $keyjoin .= " OR k" . $c . ".keyword='" . $related[$o] . "'";
                                 }
                                 # Log this
                                 daily_stat("Keyword usage", $keyref);
                             }
                             if ($keyjoin != "") {
                                 $sql_join .= " and (" . $keyjoin . ")";
                             }
                         }
                     }
                 } else {
                     # Normal keyword (not tied to a field) - searches all fields that the user has access to
                     # If ignoring field specifications then remove them.
                     if (strpos($keyword, ":") !== false && $ignore_filters) {
                         $s = explode(":", $keyword);
                         $keyword = $s[1];
                     }
                     # Omit resources containing this keyword?
                     $omit = false;
                     if (substr($keyword, 0, 1) == "-") {
                         $omit = true;
                         $keyword = substr($keyword, 1);
                     }
                     global $noadd, $wildcard_always_applied;
                     if (in_array($keyword, $noadd)) {
                         $skipped_last = true;
                     } else {
                         # Handle wildcards
                         if (strpos($keyword, "*") !== false || $wildcard_always_applied) {
                             if ($wildcard_always_applied && strpos($keyword, "*") === false) {
                                 # Suffix asterisk if none supplied and using $wildcard_always_applied mode.
                                 $keyword = $keyword . "*";
                             }
                             # Keyword contains a wildcard. Expand.
                             $c++;
                             global $use_temp_tables;
                             if (!$use_temp_tables) {
                                 global $wildcard_expand_limit;
                                 $wildcards = sql_array("select ref value from keyword where keyword like '" . escape_check(str_replace("*", "%", $keyword)) . "' order by hit_count desc limit " . $wildcard_expand_limit);
                                 # Form join
                                 if (!$omit) {
                                     # Include in query
                                     $sql_join .= " join resource_keyword k" . $c . " on k" . $c . ".resource=r.ref and k" . $c . ".keyword in ('" . join("','", $wildcards) . "')";
                                     # Allow keyword exclusion via plugin hook
                                     $sql_exclude_fields = hook("excludefieldsfromkeywordsearch");
                                     if (!empty($sql_exclude_fields)) {
                                         $sql_join .= " and k" . $c . ".resource_type_field not in (" . $sql_exclude_fields . ")";
                                     }
                                     # Omit fields to which the user does not have access.
                                     if (count($hidden_indexed_fields) > 0) {
                                         $sql_join .= " and k" . $c . ".resource_type_field not in ('" . join("','", $hidden_indexed_fields) . "')";
                                     }
                                 } else {
                                     # Exclude matching resources from query (omit feature)
                                     if ($sql_filter != "") {
                                         $sql_filter .= " and ";
                                     }
                                     $sql_filter .= "r.ref not in (select resource from resource_keyword where keyword in ('" . join("','", $wildcards) . "'))";
                                     # Filter out resources that do contain the keyword.
                                 }
                                 #echo $sql_join;
                             } else {
                                 //begin code for temporary table wildcard expansion
                                 // use a global counter to avoide temporary table naming collisions
                                 global $temptable_counter;
                                 if (!isset($temptable_counter)) {
                                     $temptable_counter = 0;
                                 }
                                 $temptable_counter++;
                                 $thetemptable = 'wcql' . $c . '_' . $temptable_counter;
                                 $sql_exclude_fields = hook("excludefieldsfromkeywordsearch");
                                 $temptable_exclude = '';
                                 if (!empty($sql_exclude_fields)) {
                                     $temptable_exclude .= "and rk.resource_type_field not in (" . $sql_exclude_fields . ")";
                                 }
                                 # Omit fields to which the user does not have access.
                                 if (count($hidden_indexed_fields) > 0) {
                                     $temptable_exclude .= " and rk.resource_type_field not in ('" . join("','", $hidden_indexed_fields) . "')";
                                 }
                                 sql_query("create temporary table {$thetemptable} (resource bigint unsigned)");
                                 sql_query("insert into {$thetemptable} select distinct r.ref from resource r\n                                                                        left join resource_keyword rk on r.ref = rk.resource {$temptable_exclude}\n                                                                        left join keyword k  on rk.keyword = k.ref\n                                                                        where k.keyword like '" . escape_check(str_replace("*", "%", $keyword)) . "'");
                                 if (!$omit) {
                                     # Include in query
                                     $sql_join .= " join {$thetemptable} on {$thetemptable}.resource = r.ref ";
                                 } else {
                                     # Exclude matching resources from query (omit feature)
                                     if ($sql_filter != "") {
                                         $sql_filter .= " and ";
                                     }
                                     $sql_filter .= "r.ref not in (select resource from {$thetemptable})";
                                     # Filter out resources that do contain the keyword.
                                 }
                             }
                         } else {
                             # Not a wildcard. Normal matching.
                             $keyref = resolve_keyword($keyword);
                             # Resolve keyword. Ignore any wildcards when resolving. We need wildcards to be present later but not here.
                             if ($keyref === false && !$omit) {
                                 $fullmatch = false;
                                 $soundex = resolve_soundex($keyword);
                                 if ($soundex === false) {
                                     # No keyword match, and no keywords sound like this word. Suggest dropping this word.
                                     $suggested[$n] = "";
                                 } else {
                                     # No keyword match, but there's a word that sounds like this word. Suggest this word instead.
                                     $suggested[$n] = "<i>" . $soundex . "</i>";
                                 }
                             } else {
                                 # Key match, add to query.
                                 $c++;
                                 # Add related keywords
                                 $related = get_related_keywords($keyref);
                                 $relatedsql = "";
                                 for ($m = 0; $m < count($related); $m++) {
                                     if ($m == 0) {
                                         $relatedsql .= " or k" . $c . ".keyword IN (";
                                     }
                                     $relatedsql .= "'" . $related[$m] . "'";
                                     if ($m == count($related) - 1) {
                                         $relatedsql .= ")";
                                     } else {
                                         $relatedsql .= ",";
                                     }
                                 }
                                 # Form join
                                 global $use_temp_tables, $use_temp_tables_for_keyword_joins;
                                 if (substr($search, 0, 8) == "!related") {
                                     $use_temp_tables_for_keyword_joins = false;
                                 }
                                 // temp tables can't be used twice (unions)
                                 $sql_exclude_fields = hook("excludefieldsfromkeywordsearch");
                                 if (!$use_temp_tables_for_keyword_joins || !$use_temp_tables) {
                                     // Not using temporary tables
                                     # Quoted string support
                                     $positionsql = "";
                                     if ($quoted_string) {
                                         if ($c > 1) {
                                             $last_key_offset = 1;
                                             if (isset($skipped_last) && $skipped_last) {
                                                 $last_key_offset = 2;
                                             }
                                             # Support skipped keywords - if the last keyword was skipped (listed in $noadd), increase the allowed position from the previous keyword. Useful for quoted searches that contain $noadd words, e.g. "black and white" where "and" is a skipped keyword.
                                             $positionsql = "and k" . $c . ".position=k" . ($c - 1) . ".position+" . $last_key_offset;
                                         }
                                     }
                                     if (!$omit) {
                                         # Include in query
                                         $sql_join .= " join resource_keyword k" . $c . " on k" . $c . ".resource=r.ref and (k" . $c . ".keyword='{$keyref}' {$relatedsql}) {$positionsql}";
                                         if ($score != "") {
                                             $score .= "+";
                                         }
                                         $score .= "k" . $c . ".hit_count";
                                         if (!empty($sql_exclude_fields)) {
                                             $sql_join .= " and k" . $c . ".resource_type_field not in (" . $sql_exclude_fields . ")";
                                         }
                                         if (count($hidden_indexed_fields) > 0) {
                                             $sql_join .= " and k" . $c . ".resource_type_field not in ('" . join("','", $hidden_indexed_fields) . "')";
                                         }
                                     } else {
                                         # Exclude matching resources from query (omit feature)
                                         if ($sql_filter != "") {
                                             $sql_filter .= " and ";
                                         }
                                         $sql_filter .= "r.ref not in (select resource from resource_keyword where keyword='{$keyref}')";
                                         # Filter out resources that do contain the keyword.
                                     }
                                 } else {
                                     //use temp tables
                                     if (!isset($temptable_counter)) {
                                         $temptable_counter = 0;
                                     }
                                     $temptable_counter++;
                                     $jtemptable = 'jtt' . $c . '_' . $temptable_counter;
                                     sql_query("drop table IF EXISTS {$jtemptable} ", false);
                                     $exclude_sql = '';
                                     # Quoted string support
                                     $positionsql = "";
                                     if ($quoted_string) {
                                         if ($c > 1) {
                                             $last_key_offset = 1;
                                             if (isset($skipped_last) && $skipped_last) {
                                                 $last_key_offset = 2;
                                             }
                                             # Support skipped keywords - if the last keyword was skipped (listed in $noadd), increase the allowed position from the previous keyword. Useful for quoted searches that contain $noadd words, e.g. "black and white" where "and" is a skipped keyword.
                                             $positionsql = "and {$jtemptable}.position=" . 'jtt' . ($c - 1) . '_' . ($temptable_counter - 1) . ".position+" . $last_key_offset;
                                         }
                                     }
                                     if (!empty($sql_exclude_fields)) {
                                         $exclude_sql .= "and k" . $c . ".resource_type_field not in (" . $sql_exclude_fields . ")";
                                     }
                                     if (count($hidden_indexed_fields) > 0) {
                                         $exclude_sql .= " and k" . $c . ".resource_type_field not in ('" . join("','", $hidden_indexed_fields) . "')";
                                     }
                                     $test = sql_query("create temporary table {$jtemptable} SELECT distinct k" . $c . ".resource,k" . $c . ".hit_count" . ($quoted_string ? ",k" . $c . ".position" : "") . " from resource_keyword k" . $c . " where (k" . $c . ".keyword='{$keyref}' {$relatedsql})  {$exclude_sql}");
                                     if (!$omit) {
                                         # Include in query
                                         $sql_join .= " join {$jtemptable} on {$jtemptable}.resource = r.ref {$positionsql}";
                                         if ($score != "") {
                                             $score .= "+";
                                         }
                                         $score .= $jtemptable . ".hit_count";
                                     } else {
                                         # Exclude matching resources from query (omit feature)
                                         if ($sql_filter != "") {
                                             $sql_filter .= " and ";
                                         }
                                         $sql_filter .= "r.ref not in (select resource from {$jtemptable})";
                                         # Filter out resources that do contain the keyword.
                                     }
                                 }
                                 # Log this
                                 daily_stat("Keyword usage", $keyref);
                             }
                         }
                         $skipped_last = false;
                     }
                 }
             }
         }
     }
     # Could not match on provided keywords? Attempt to return some suggestions.
     if ($fullmatch == false) {
         if ($suggested == $keywords) {
             # Nothing different to suggest.
             debug("No alternative keywords to suggest.");
             return "";
         } else {
             # Suggest alternative spellings/sound-a-likes
             $suggest = "";
             if (strpos($search, ",") === false) {
                 $suggestjoin = " ";
             } else {
                 $suggestjoin = ", ";
             }
             for ($n = 0; $n < count($suggested); $n++) {
                 if ($suggested[$n] != "") {
                     if ($suggest != "") {
                         $suggest .= $suggestjoin;
                     }
                     $suggest .= $suggested[$n];
                 }
             }
             debug("Suggesting {$suggest}");
             return $suggest;
         }
     }
     # Some useful debug.
     #echo("keywordjoin=" . $sql_join);
     #echo("<br>Filter=" . $sql_filter);
     #echo("<br>Search=" . $search);
     hook("additionalsqlfilter");
     hook("parametricsqlfilter", '', array($search));
     # ------ Search filtering: If search_filter is specified on the user group, then we must always apply this filter.
     global $usersearchfilter;
     $sf = explode(";", $usersearchfilter);
     if (strlen($usersearchfilter) > 0) {
         for ($n = 0; $n < count($sf); $n++) {
             $s = explode("=", $sf[$n]);
             if (count($s) != 2) {
                 exit("Search filter is not correctly configured for this user group.");
             }
             # Support for "NOT" matching. Return results only where the specified value or values are NOT set.
             $filterfield = $s[0];
             $filter_not = false;
             if (substr($filterfield, -1) == "!") {
                 $filter_not = true;
                 $filterfield = substr($filterfield, 0, -1);
                 # Strip off the exclamation mark.
             }
             # Find field(s) - multiple fields can be returned to support several fields with the same name.
             $f = sql_array("select ref value from resource_type_field where name='" . escape_check($filterfield) . "'");
             if (count($f) == 0) {
                 exit("Field(s) with short name '" . $filterfield . "' not found in user group search filter.");
             }
             # Find keyword(s)
             $ks = explode("|", strtolower(escape_check($s[1])));
             for ($x = 0; $x < count($ks); $x++) {
                 $ks[$x] = cleanse_string($ks[$x], true);
             }
             # Cleanse the string as keywords are stored without special characters
             $modifiedsearchfilter = hook("modifysearchfilter");
             if ($modifiedsearchfilter) {
                 $ks = $modifiedsearchfilter;
             }
             $kw = sql_array("select ref value from keyword where keyword in ('" . join("','", $ks) . "')");
             #if (count($k)==0) {exit ("At least one of keyword(s) '" . join("', '",$ks) . "' not found in user group search filter.");}
             if (!$filter_not) {
                 # Standard operation ('=' syntax)
                 $sql_join .= " join resource_keyword filter" . $n . " on r.ref=filter" . $n . ".resource and filter" . $n . ".resource_type_field in ('" . join("','", $f) . "') and filter" . $n . ".keyword in ('" . join("','", $kw) . "') ";
             } else {
                 # Inverted NOT operation ('!=' syntax)
                 if ($sql_filter != "") {
                     $sql_filter .= " and ";
                 }
                 $sql_filter .= "r.ref not in (select resource from resource_keyword where resource_type_field in ('" . join("','", $f) . "') and keyword in ('" . join("','", $kw) . "'))";
                 # Filter out resources that do contain the keyword(s)
             }
         }
     }
     $userownfilter = hook("userownfilter");
     if ($userownfilter) {
         $sql_join .= $userownfilter;
     }
     # Handle numeric searches when $config_search_for_number=false, i.e. perform a normal search but include matches for resource ID first
     global $config_search_for_number;
     if (!$config_search_for_number && is_numeric($search)) {
         # Always show exact resource matches first.
         $order_by = "(r.ref='" . $search . "') desc," . $order_by;
     }
     # --------------------------------------------------------------------------------
     # Special Searches (start with an exclamation mark)
     # --------------------------------------------------------------------------------
     # Can only search for resources that belong to themes
     if (checkperm("J")) {
         $sql_join .= " join collection_resource jcr on jcr.resource=r.ref join collection jc on jcr.collection=jc.ref and length(jc.theme)>0 ";
     }
     # ------ Special searches ------
     # View Last
     if (substr($search, 0, 5) == "!last") {
         # Replace r2.ref with r.ref for the alternative query used here.
         $order_by = str_replace("r.ref", "r2.ref", $order_by);
         if ($orig_order == "relevance") {
             $order_by = "r2.ref desc";
         }
         # Extract the number of records to produce
         $last = explode(",", $search);
         $last = str_replace("!last", "", $last[0]);
         if (!is_numeric($last)) {
             $last = 1000;
             $search = "!last1000";
         }
         # 'Last' must be a number. SQL injection filter.
         # Fix the order by for this query (special case due to inner query)
         $order_by = str_replace("r.rating", "rating", $order_by);
         return sql_query($sql_prefix . "select distinct *,r2.hit_count score from (select {$select} from resource r {$sql_join} where {$sql_filter} order by ref desc limit {$last} ) r2 order by {$order_by}" . $sql_suffix, false, $fetchrows);
     }
     # View Resources With No Downloads
     if (substr($search, 0, 12) == "!nodownloads") {
         if ($orig_order == "relevance") {
             $order_by = "ref desc";
         }
         return sql_query($sql_prefix . "select distinct r.hit_count score, {$select} from resource r {$sql_join}  where {$sql_filter} and ref not in (select distinct object_ref from daily_stat where activity_type='Resource download') order by {$order_by}" . $sql_suffix, false, $fetchrows);
     }
     # Duplicate Resources (based on file_checksum)
     if (substr($search, 0, 11) == "!duplicates") {
         // old code disabled due to performance issues
         //return sql_query("select distinct r.hit_count score, $select from resource r $sql_join  where $sql_filter and file_checksum in (select file_checksum from (select file_checksum,count(*) dupecount from resource group by file_checksum) r2 where r2.dupecount>1) order by file_checksum",false,$fetchrows);
         // new code relies on MySQL temporary tables being enabled, as well as checksums
         // if either is not turned on, just give up.
         global $use_temp_tables;
         global $file_checksums;
         if ($use_temp_tables && $file_checksums) {
             global $temptable_counter;
             if (!isset($temptable_counter)) {
                 $temptable_counter = 0;
             }
             $temptable_counter++;
             $thetemptable = 'dupehashx' . '_' . $temptable_counter;
             $dupequery = "select distinct r.hit_count score, {$select} from resource r {$sql_join} join {$thetemptable} on r.file_checksum = {$thetemptable}.hash where {$sql_filter} order by file_checksum";
             sql_query("create temporary table {$thetemptable} (`hash` varchar(255) NOT NULL,`hashcount` int(10) default NULL, KEY `Index 1` (`hash`))", false);
             sql_query("insert into {$thetemptable} select file_checksum, count(file_checksum) from resource where archive = 0 and ref > 0 and file_checksum <> '' and file_checksum is not null group by file_checksum having count(file_checksum) > 1", false);
             $duperesult = sql_query($sql_prefix . $dupequery . $sql_suffix, false, $fetchrows);
             return $duperesult;
         } else {
             return false;
         }
     }
     # View Collection
     if (substr($search, 0, 11) == "!collection") {
         if ($orig_order == "relevance") {
             $order_by = "c.sortorder asc,c.date_added desc,r.ref";
         }
         $colcustperm = $sql_join;
         $colcustfilter = $sql_filter;
         // to avoid allowing this sql_filter to be modified by the $access_override search in the smart collection update below!!!
         if (getval("k", "") != "") {
             $sql_filter = "r.ref>0";
         }
         # Special case if a key has been provided.
         # Extract the collection number
         $collection = explode(" ", $search);
         $collection = str_replace("!collection", "", $collection[0]);
         $collection = explode(",", $collection);
         // just get the number
         $collection = escape_check($collection[0]);
         # smart collections update
         global $allow_smart_collections, $smart_collections_async;
         if ($allow_smart_collections) {
             global $smartsearch_ref_cache;
             if (isset($smartsearch_ref_cache[$collection])) {
                 $smartsearch_ref = $smartsearch_ref_cache[$collection];
                 // this value is pretty much constant
             } else {
                 $smartsearch_ref = sql_value("select savedsearch value from collection where ref='{$collection}'", "");
                 $smartsearch_ref_cache[$collection] = $smartsearch_ref;
             }
             global $php_path;
             if ($smartsearch_ref != "") {
                 if ($smart_collections_async && isset($php_path) && file_exists($php_path . "/php")) {
                     exec($php_path . "/php " . dirname(__FILE__) . "/../pages/ajax/update_smart_collection.php " . escapeshellarg($collection) . " " . "> /dev/null 2>&1 &");
                 } else {
                     include dirname(__FILE__) . "/../pages/ajax/update_smart_collection.php";
                 }
             }
         }
         $result = sql_query($sql_prefix . "select distinct c.date_added,c.comment,c.purchase_size,c.purchase_complete,r.hit_count score,length(c.comment) commentset, {$select} from resource r  join collection_resource c on r.ref=c.resource {$colcustperm}  where c.collection='" . $collection . "' and {$colcustfilter} group by r.ref order by {$order_by}" . $sql_suffix, false, $fetchrows);
         hook("beforereturnresults", "", array($result, $archive));
         return $result;
     }
     # View Related
     if (substr($search, 0, 8) == "!related") {
         # Extract the resource number
         $resource = explode(" ", $search);
         $resource = str_replace("!related", "", $resource[0]);
         $order_by = str_replace("r.", "", $order_by);
         # UNION below doesn't like table aliases in the order by.
         return sql_query($sql_prefix . "select distinct r.hit_count score, {$select} from resource r join resource_related t on (t.related=r.ref and t.resource='" . $resource . "') {$sql_join}  where 1=1 and {$sql_filter} group by r.ref \n\t\tUNION\n\t\tselect distinct r.hit_count score, {$select} from resource r join resource_related t on (t.resource=r.ref and t.related='" . $resource . "') {$sql_join}  where 1=1 and {$sql_filter} group by r.ref \n\t\torder by {$order_by}" . $sql_suffix, false, $fetchrows);
     }
     # Geographic search
     if (substr($search, 0, 4) == "!geo") {
         $geo = explode("t", str_replace(array("m", "p"), array("-", "."), substr($search, 4)));
         # Specially encoded string to avoid keyword splitting
         $bl = explode("b", $geo[0]);
         $tr = explode("b", $geo[1]);
         $sql = "select r.hit_count score, {$select} from resource r {$sql_join} where \n\n\t\t\t\t\tgeo_lat > '" . escape_check($bl[0]) . "'\n              and   geo_lat < '" . escape_check($tr[0]) . "'\t\t\n              and   geo_long > '" . escape_check($bl[1]) . "'\t\t\n              and   geo_long < '" . escape_check($tr[1]) . "'\t\t\n                          \n\t\t and {$sql_filter} group by r.ref order by {$order_by}";
         return sql_query($sql_prefix . $sql . $sql_suffix, false, $fetchrows);
     }
     # Colour search
     if (substr($search, 0, 7) == "!colour") {
         $colour = explode(" ", $search);
         $colour = str_replace("!colour", "", $colour[0]);
         $sql = "select r.hit_count score, {$select} from resource r {$sql_join}\n\t\t\t\twhere \n\t\t\t\t\tcolour_key like '" . escape_check($colour) . "%'\n              \tor  colour_key like '_" . escape_check($colour) . "%'\n                          \n\t\t and {$sql_filter} group by r.ref order by {$order_by}";
         return sql_query($sql_prefix . $sql . $sql_suffix, false, $fetchrows);
     }
     # Similar to a colour
     if (substr($search, 0, 4) == "!rgb") {
         $rgb = explode(":", $search);
         $rgb = explode(",", $rgb[1]);
         return sql_query($sql_prefix . "select distinct r.hit_count score, {$select} from resource r {$sql_join}  where has_image=1 and {$sql_filter} group by r.ref order by (abs(image_red-" . $rgb[0] . ")+abs(image_green-" . $rgb[1] . ")+abs(image_blue-" . $rgb[2] . ")) asc limit 500" . $sql_suffix, false, $fetchrows);
     }
     # Has no preview image
     if (substr($search, 0, 10) == "!nopreview") {
         return sql_query($sql_prefix . "select distinct r.hit_count score, {$select} from resource r {$sql_join}  where has_image=0 and {$sql_filter} group by r.ref" . $sql_suffix, false, $fetchrows);
     }
     # Similar to a colour by key
     if (substr($search, 0, 10) == "!colourkey") {
         # Extract the colour key
         $colourkey = explode(" ", $search);
         $colourkey = str_replace("!colourkey", "", $colourkey[0]);
         return sql_query($sql_prefix . "select distinct r.hit_count score, {$select} from resource r {$sql_join}  where has_image=1 and left(colour_key,4)='" . $colourkey . "' and {$sql_filter} group by r.ref" . $sql_suffix, false, $fetchrows);
     }
     global $config_search_for_number;
     if ($config_search_for_number && is_numeric($search) || substr($search, 0, 9) == "!resource") {
         $theref = escape_check($search);
         $theref = preg_replace("/[^0-9]/", "", $theref);
         return sql_query($sql_prefix . "select distinct r.hit_count score, {$select} from resource r {$sql_join}  where r.ref='{$theref}' and {$sql_filter} group by r.ref" . $sql_suffix);
     }
     # Searching for pending archive
     if (substr($search, 0, 15) == "!archivepending") {
         return sql_query($sql_prefix . "select distinct r.hit_count score, {$select} from resource r {$sql_join}  where archive=1 and ref>0 group by r.ref order by {$order_by}" . $sql_suffix, false, $fetchrows);
     }
     if (substr($search, 0, 12) == "!userpending") {
         if ($orig_order == "rating") {
             $order_by = "request_count desc," . $order_by;
         }
         return sql_query($sql_prefix . "select distinct r.hit_count score, {$select} from resource r {$sql_join}  where archive=-1 and ref>0 group by r.ref order by {$order_by}" . $sql_suffix, false, $fetchrows);
     }
     # View Contributions
     if (substr($search, 0, 14) == "!contributions") {
         global $userref;
         # Extract the user ref
         $cuser = explode(" ", $search);
         $cuser = str_replace("!contributions", "", $cuser[0]);
         if ($userref == $cuser) {
             $sql_filter = "archive='{$archive}'";
             $sql_join = "";
         }
         # Disable permissions when viewing your own contributions - only restriction is the archive status
         $select = str_replace(",rca.access group_access,rca2.access user_access ", ",null group_access, null user_access ", $select);
         return sql_query($sql_prefix . "select distinct r.hit_count score, {$select} from resource r {$sql_join}  where created_by='" . $cuser . "' and r.ref > 0 and {$sql_filter} group by r.ref order by {$order_by}" . $sql_suffix, false, $fetchrows);
     }
     # Search for resources with images
     if ($search == "!images") {
         return sql_query($sql_prefix . "select distinct r.hit_count score, {$select} from resource r {$sql_join}  where has_image=1 group by r.ref order by {$order_by}" . $sql_suffix, false, $fetchrows);
     }
     # Search for resources not used in Collections
     if (substr($search, 0, 7) == "!unused") {
         return sql_query($sql_prefix . "SELECT distinct {$select} FROM resource r {$sql_join}  where r.ref>0 and r.ref not in (select c.resource from collection_resource c) and {$sql_filter}" . $sql_suffix, false, $fetchrows);
     }
     # Search for resources with an empty field, ex: !empty18  or  !emptycaption
     if (substr($search, 0, 6) == "!empty") {
         $nodatafield = explode(" ", $search);
         $nodatafield = rtrim(str_replace("!empty", "", $nodatafield[0]), ',');
         if (!is_numeric($nodatafield)) {
             $nodatafield = sql_value("select ref value from resource_type_field where name='" . escape_check($nodatafield) . "'", "");
         }
         if ($nodatafield == "" || !is_numeric($nodatafield)) {
             exit('invalid !empty search');
         }
         $rtype = sql_value("select resource_type value from resource_type_field where ref='{$nodatafield}'", 0);
         if ($rtype != 0) {
             if ($rtype == 999) {
                 $restypesql = "(r.archive=1 or r.archive=2) and ";
                 $sql_filter = str_replace("archive='0'", "(archive=1 or archive=2)", $sql_filter);
             } else {
                 $restypesql = "r.resource_type ='{$rtype}' and ";
             }
         } else {
             $restypesql = "";
         }
         return sql_query("{$sql_prefix} select distinct r.hit_count score,{$select} from resource r left outer join resource_data rd on r.ref=rd.resource and rd.resource_type_field='{$nodatafield}' {$sql_join} where {$restypesql} (rd.value ='' or rd.value is null or rd.value=',')  and {$sql_filter} group by r.ref order by {$order_by} {$sql_suffix}");
     }
     # Search for a list of resources
     # !listall = archive state is not applied as a filter to the list of resources.
     if (substr($search, 0, 5) == "!list") {
         $resources = explode(" ", $search);
         if (substr($search, 0, 8) == "!listall") {
             $resources = str_replace("!listall", "", $resources[0]);
         } else {
             $resources = str_replace("!list", "", $resources[0]);
         }
         $resources = explode(",", $resources);
         // separate out any additional keywords
         $resources = escape_check($resources[0]);
         if (strlen(trim($resources)) == 0) {
             $resources = "where r.ref IS NULL";
         } else {
             $resources = "where (r.ref='" . str_replace(":", "' OR r.ref='", $resources) . "')";
         }
         return sql_query($sql_prefix . "SELECT distinct r.hit_count score, {$select} FROM resource r {$sql_join} {$resources} and {$sql_filter} order by {$order_by}" . $sql_suffix, false, $fetchrows);
     }
     # Within this hook implementation, set the value of the global $sql variable:
     # Since there will only be one special search executed at a time, only one of the
     # hook implementations will set the value.  So, you know that the value set
     # will always be the correct one (unless two plugins use the same !<type> value).
     $sql = "";
     hook("addspecialsearch", "", array($search));
     if ($sql != "") {
         debug("Addspecialsearch hook returned useful results.");
         return sql_query($sql_prefix . $sql . $sql_suffix, false, $fetchrows);
     }
     # -------------------------------------------------------------------------------------
     # Standard Searches
     # -------------------------------------------------------------------------------------
     # We've reached this far without returning.
     # This must be a standard (non-special) search.
     # Construct and perform the standard search query.
     #$sql="";
     if ($sql_filter != "") {
         if ($sql != "") {
             $sql .= " and ";
         }
         $sql .= $sql_filter;
     }
     # Append custom permissions
     $t .= $sql_join;
     if ($score == "") {
         $score = "r.hit_count";
     }
     # In case score hasn't been set (i.e. empty search)
     global $max_results;
     if ($t2 != "" && $sql != "") {
         $sql = " and " . $sql;
     }
     # Compile final SQL
     # Performance enhancement - set return limit to number of rows required
     if ($search_sql_double_pass_mode && $fetchrows != -1) {
         $max_results = $fetchrows;
     }
     $results_sql = $sql_prefix . "select distinct {$score} score, {$select} from resource r" . $t . "  where {$t2} {$sql} group by r.ref order by {$order_by} limit {$max_results}" . $sql_suffix;
     # Debug
     debug("altert " . $results_sql);
     # Execute query
     $result = sql_query($results_sql, false, $fetchrows);
     # Performance improvement - perform a second count-only query and pad the result array as necessary
     if ($search_sql_double_pass_mode && count($result) >= $max_results) {
         $count_sql = "select count(distinct r.ref) value from resource r" . $t . "  where {$t2} {$sql}";
         $count = sql_value($count_sql, 0);
         $result = array_pad($result, $count, 0);
     }
     debug("Search found " . count($result) . " results");
     if (count($result) > 0) {
         hook("beforereturnresults", "", array($result, $archive));
         return $result;
     }
     # (temp) - no suggestion for field-specific searching for now - TO DO: modify function below to support this
     if (strpos($search, ":") !== false) {
         return "";
     }
     # All keywords resolved OK, but there were no matches
     # Remove keywords, least used first, until we get results.
     $lsql = "";
     $omitmatch = false;
     for ($n = 0; $n < count($keywords); $n++) {
         if (substr($keywords[$n], 0, 1) == "-") {
             $omitmatch = true;
             $omit = $keywords[$n];
         }
         if ($lsql != "") {
             $lsql .= " or ";
         }
         $lsql .= "keyword='" . escape_check($keywords[$n]) . "'";
     }
     if ($omitmatch) {
         return trim_spaces(str_replace(" " . $omit . " ", " ", " " . join(" ", $keywords) . " "));
     }
     if ($lsql != "") {
         $least = sql_value("select keyword value from keyword where {$lsql} order by hit_count asc limit 1", "");
         return trim_spaces(str_replace(" " . $least . " ", " ", " " . join(" ", $keywords) . " "));
     } else {
         return array();
     }
 }
$filter = getvalescaped("filter", "");
$nofilter = getvalescaped("nofilter", "");
# Build up a SQL query based on the current filtering options
$s = explode(";", $filter);
$sql = "";
for ($n = 0; $n < count($s); $n++) {
    $e = explode(":", $s[$n]);
    if (count($e) == 2) {
        # Fetch field details
        $field[$n] = sql_query("select * from resource_type_field where name='" . escape_check($e[0]) . "'");
        if (count($field[$n]) == 0) {
            exit;
        }
        $field[$n] = $field[$n][0];
        if ($e[1] != "") {
            $k = resolve_keyword(cleanse_string($e[1], true));
            if ($k === false) {
                $k = -1;
            }
            # Filter using this value
            $sql .= " join resource_keyword rk" . $n . " on rk" . $n . ".resource=rk.resource and rk" . $n . ".keyword='" . $k . "' and rk" . $n . ".resource_type_field='" . $field[$n]["ref"] . "'";
        }
    }
}
# For each field, fetch all values and limit those that do not exist
for ($n = 0; $n < count($s); $n++) {
    $e = explode(":", $s[$n]);
    if (count($e) == 2 && $n != $nofilter) {
        #		$values=sql_array("select distinct k.keyword value from resource r join resource_keyword rk on rk.resource=r.ref and r.archive=0 and r.ref>0 and rk.resource_type_field='" . $field[$n]["ref"] . "' join keyword k on rk.keyword=k.ref " . $sql);
        $values = sql_array("select distinct k.keyword value from resource_keyword rk join keyword k on rk.keyword=k.ref " . $sql . " where rk.resource>0 and rk.resource_type_field='" . $field[$n]["ref"] . "'");
        # Fetch the full list of available options
			<?php 
            }
        }
        echo $search_title_links;
        hook("beforesearchresults2");
        hook("beforesearchresultsexpandspace");
        ?>
	<div class="clearerleft"></div>
	<div id="CentralSpaceResources">
	<?php 
        //exit("HERE" . print_r($result));
        if ((!is_array($result) || count($result) < 1) && empty($collections)) {
            // No matches found? Log this in
            $key_id = resolve_keyword($search);
            if ($key_id === FALSE) {
                $key_id = resolve_keyword($search, TRUE);
                daily_stat('Keyword usage', $key_id);
            }
            daily_stat("Keyword usage - no results found", $key_id);
            ?>
		<div class="BasicsBox"> 
		  <div class="NoFind">
			<p><?php 
            echo $lang["searchnomatches"];
            ?>
</p>
			<?php 
            if (!$collectionsearch) {
                if ($result != "" && !is_array($result)) {
                    ?>
					<p><?php