ThinkPHP实现经纬度范围查询

经纬度范围获取

    /**
     * Desc: 根据经纬度，半径范围获取附近
     * User: JamesLiu
     * Date: 2019/5/13
     * Time: 15:38
     * @param $longitude 经度
     * @param $latitude 纬度
     * @param $raidus 半径范围(单位：米)
     * @return array
     */
    public function getAround($longitude, $latitude, $raidus)
    {
        $PI = 3.14159265;
        $degree = (24901 * 1609) / 360.0;
        $dpmLat = 1 / $degree;
        $radiusLat = $dpmLat * $raidus;
        $minLat = $latitude - $radiusLat;
        $maxLat = $latitude + $radiusLat;
        $mpdLng = $degree * cos($latitude * ($PI / 180));
        $dpmLng = 1 / $mpdLng;
        $radiusLng = $dpmLng * $raidus;
        $minLng = $longitude - $radiusLng;
        $maxLng = $longitude + $radiusLng;
        return array('minLng' => $minLng, 'maxLng' => $maxLng, 'minLat' => $minLat, 'maxLat' => $maxLat);
    }

经纬度距离组装成sql

$array = $this->getAround(115.826646, 28.718022, 2000);
 $condition['longitude'] = array(array('EGT', $array['minLng']), array('ELT', $array['maxLng']), 'and');//(`longitude` >= minLng) AND (`longitude` <= maxLng)
 $condition['latitude'] = array(array('EGT', $array['minLat']), array('ELT', $array['maxLat']), 'and');//(`latitude` >= minLat) AND (`latitude` <=maxLat)