The search map can be used via the GetMapSearchHeader, GetMapSearchBody, and GetMapSearchCenter static methods of the Geo_Map class. They work in a similar way to the preview/tag functions. You can provide width and height values for the search map and optionally a list of four <div> ids for automatic storage of top-left and bottom-right longitude/latitude values. The values can be taken from the class by calling the get_top_left and get_bottom_right methods of an instantiated object.
An example of the visual search interface is in the admin-files/articles/locations/search.php file.
The Geo_Map::GetGeoSearchSQLQuery takes two coordinates - opposite corners of the search area - and it returns a SQL statement for the database search. The two corners should go from West to East, otherwise it would not be known whether the box goes over the 180/-180 meridian or not. It is as shown below:
// going east to west over the 180/-180, and south to north
$p_coordinates = array();
$p_coordinates[] = array("longitude" => "150", "latitude" => "20");
$p_coordinates[] = array("longitude" => "40", "latitude" => "60");
// going directly west to east, and north to south
$p_coordinates = array();
$p_coordinates[] = array("longitude" => "-10", "latitude" => "60");
$p_coordinates[] = array("longitude" => "40", "latitude" => "-20");
$query = Geo_Map::GetGeoSearchSQLQuery($p_coordinates);
echo $query;
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