laravel5.1 - php laravel javascript 百度地图api 经纬度计算
用户的填写地址后
通过百度api 获取了 用户的 经纬度
<code>$userLoX = 121.373552; $userLoY = 31.266417; </code>
然后更数据的商户的 经纬度 匹配
有一个商户表 商户表的信息 存有 商户的 经纬度
查询 出 用户 5 公里内的 数据库里的 商户
有什么查询方法吗
求大神指导一下哦啊
回复内容:
用户的填写地址后
通过百度api 获取了 用户的 经纬度
<code>$userLoX = 121.373552; $userLoY = 31.266417; </code>
然后更数据的商户的 经纬度 匹配
有一个商户表 商户表的信息 存有 商户的 经纬度
查询 出 用户 5 公里内的 数据库里的 商户
有什么查询方法吗
求大神指导一下哦啊
mysql的GEOMETRY你可以看看,只要定义过point类型就可以使用了
地球上任意两点距离计算公式为 :
D=R* arccos(siny1siny2+cosy1cosy2cos(x1-x2) )
其中:R为地球半径,均值为6370km.
A点经、纬度分别为x1和y1,,东经为正,西经为负
B点经、纬度分别为x2和y2,北纬为正,南纬为负
注意的是经纬度是角度,算sin,cos值时先将其换算成弧度。

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