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I was working with the solution to a very similar question and upon implementation I discovered that it was producing a tall rectangle with the returned coordinates instead of a square (please see Matthias' answer to the other question). I only needed an array to be returned as this is to work with WordPress which has it's own preferred query method. Here's my implementation: function bar_get_nearby( $lat, $lng, $limit = 50, $distance = 50, $unit = 'mi' ) { // radius of earth; @note: the earth is not perfectly spherical, but this is considered the 'mean radius' if( $unit == 'km' ) { $radius = 6371.009; } elseif ( $unit == 'mi' ) { $radius = 3958.761; } // latitude boundaries $maxLat = ( float ) $lat + rad2deg( $distance / $radius ); $minLat = ( float ) $lat - rad2deg( $distance / $radius ); // longitude boundaries (longitude gets smaller when latitude increases) $maxLng = ( float ) $lng + rad2deg( $distance / $radius / cos( deg2rad( ( float ) $lat ) ) ); $minLng = ( float ) $lng - rad2deg( $distance / $radius / cos( deg2rad( ( float ) $lat ) ) ); $max_min_values = array( 'max_latitude' => $maxLat, 'min_latitude' => $minLat, 'max_longitude' => $maxLng, 'min_longitude' => $minLng ); return $max_min_values; } If I give I geocode (via Google Maps API) my desired postcode of G2 1QX and a distance of 5 miles I get a lat/lng of -4.2556347/55.8620472 with the function returning this array: Array ( [max_latitude] => -4.18326890233 [min_latitude] => -4.32800049767 [max_longitude] => 55.9346130696 [min_longitude] => 55.7894813304 ) Any ideas? Many thanks in advance. Cheers, RS

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