使用PHP：从给定点查找多边形中的最近点

Question

我有一个由多边形坐标组成的mysql表。在另一张桌子上 我有记号笔的坐标。 我需要找到从标记到多边形的最近点

我正在尝试转换一些算法，但没有找到任何地方

Find indices of polygon vertices nearest to a point

还尝试转换javascript选项

https://gis.stackexchange.com/questions/309515/find-closest-point-using-l-geometryutil-closest-and-open-its-popup

Find a point in a polyline which is closest to a latlng

但是我不知道如何在服务器端PHP或mysql中实现它

Table 1

Id              Polygon
1               POLYGON((9.99954289860805 44.0511003950809,
                9.99959799860805 44.0510457950809,9.99959799860805 44.0509783950809,
                9.99957439860805 44.0508603950809,9.99961729860804 44.0508873950809,
                9.99971659860803 44.0509201950809,9.999906998608 44.0509567950809,
                10.000177898608 44.0509779950809,10.000272598608 44.0509802950809,
                44.0513239950809,9.99954289860805 44.0511003950809))

Table 2
Id             Marker
1              10.3333333322,45.3222222222

Output
A coordinate inside polygon or one of the coordinate of polygon