PHP根据经纬度获取在范围坐标的数据

// 计算范围，可以做搜索用户

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;
}

// 获取范围内的所有数据

$where = " (`jingdu` between ".$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);