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#coordtransform 坐标转换

参考

https://github.com/wandergis/coordtransform 
https://github.com/qichengzx/coordtransform

#坐标系相关

WGS84坐标系:即地球坐标系,国际上通用的坐标系。
GCJ02坐标系:即火星坐标系,WGS84坐标系经加密后的坐标系。Google Maps,高德在用。
BD09坐标系:即百度坐标系,GCJ02坐标系经加密后的坐标系。
lat 纬度 log经度

#安装

composer require songbai/coord

#快速开始

use SongBai\Coord\Transform;

$tool = new Transform();

//BD09toGCJ02 百度坐标系->火星坐标系
$tool->BD09toGCJ02($lon,$lat); //return array($lon,$lat);

//GCJ02toBD09 火星坐标系->百度坐标系
$tool->GCJ02toBD09($lon,$lat);//return array($lon,$lat);

//WGS84toGCJ02 WGS84坐标系->火星坐标系
$tool->WGS84toGCJ02($lon,$lat);//return array($lon,$lat);

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