PHP根据经纬度获取在范围坐标的数据

function GetRange($lat,$lon,$raidus){

//计算纬度
$degree = (24901 * 1609) / 360.0;
$dpmLat = 1 / $degree;
$radiusLat = $dpmLat * $raidus;
$minLat = $lat - $radiusLat; //得到最小纬度
$maxLat = $lat + $radiusLat; //得到最大纬度

//计算经度
$mpdLng = $degree * cos($lat * (PI / 180));
$dpmLng = 1 / $mpdLng;
$radiusLng = $dpmLng * $raidus;
$minLng = $lon - $radiusLng; //得到最小经度
$maxLng = $lon + $radiusLng; //得到最大经度

//范围
$range = array(
'minLat' => $minLat,
'maxLat' => $maxLat,
'minLon' => $minLng,
'maxLon' => $maxLng
);
return $range;
}

$where = " (`jingdu` between ".$result['minLat']." AND ".$result['maxLat'].") AND ( `weidu` between ".$result['minLon']." AND ".$result['maxLon']." ) ";
$res = $db->query("SELECT * FROM ".DB_PRE."shops WHERE $where ORDER BY `id` DESC ");
$list = array();
while ( $row = $db->fetch_array($res) ) {
$list[] = $row['shops_name'];
}
print_r($list);