What do I do to show in php with JavaScript, by means of a select a coordinate that is stored in database in the coords field?

Currently I am doing a web application on php, which captures the coordinates of the Google Maps API, and then I save it in a database in the field coords.

Now I just need to be able to show this again in the map of the Google maps api, this to do it with a, at the time of selecting it, I painted on the map the coordinates and I located on the point.

Thank you very much.