define('EARTH_RADIUS',6370.6935);functionvicinity($lng,$lat,$distance=0.5){//$distance=0.5;//单位10KM$radius=EARTH_RADIUS;$dlng=rad2deg(2*asin(sin($distance/(2*$radius))/cos($lat)));$dlat=rad2deg($distance*10/$radius);$lng_left=round($lng$dlng,6);$lng_right=round($lng...