经纬度范围获取
1 /** 2 * Desc: 根据经纬度，半径范围获取附近 3 * User: JamesLiu 4 * Date: 2019/5/13 5 * Time: 15:38 6 * @param $longitude 经度 7 * @param $latitude 纬度 8 * @param $raidus 半径范围(单位：米) 9 * @return array 10 */ 11 public function getAround($longitude, $latitude, $raidus) 12 { 13 $PI = 3.14159265; 14 $degree = (24901 * 1609) / 360.0; 15 $dpmLat = 1 / $degree; 16 $radiusLat = $dpmLat * $raidus; 17 $minLat = $latitude - $radiusLat; 18 $maxLat = $latitude + $radiusLat; 19 $mpdLng = $degree * cos($latitude * ($PI / 180)); 20 $dpmLng = 1 / $mpdLng; 21 $radiusLng = $dpmLng * $raidus; 22 $minLng = $longitude - $radiusLng; 23 $maxLng = $longitude + $radiusLng; 24 return array('minLng' => $minLng, 'maxLng' => $maxLng, 'minLat' => $minLat, 'maxLat' => $maxLat); 25 }
经纬度距离组装成sql
1 $array = $this->getAround(115.826646, 28.718022, 2000); 2 $condition['longitude'] = array(array('EGT', $array['minLng']), array('ELT', $array['maxLng']), 'and');//(`longitude` >= minLng) AND (`longitude` <= maxLng) 3 $condition['latitude'] = array(array('EGT', $array['minLat']), array('ELT', $array['maxLat']), 'and');//(`latitude` >= minLat) AND (`latitude` <=maxLat)