从数据库读取某经纬度附近1km的地点

Posted 2020-11-23 wmc1125

``` $slat = $banner_content[‘jd‘]; $slng = $banner_content[‘wd‘]; $sql = "select *, acos( sin(($slng*3.1415)/180) * sin((wd*3.1415)/180) + cos(($slng*3.1415)/180) * cos((wd*3.1415)/180) * cos(($slat*3.1415)/180 - (jd*3.1415)/180) )*6370.996 AS juli FROM {$this->model->pre}post where status=1 and cid=29 HAVING juli <= 1"; $list = $this->model->query($sql); 数据库字段 jd 经度 wd 纬度 某点的坐标 $slat 经度 $slng 纬度 ``` > 更多精彩文章请关注 [王明昌博客](https://www.wangmingchang.com)