SVN: how to write php script to call update via browser

Question

PHP

How to write a PHP script (which can be called through a browser). So that it correctly calls the SVN Update command to update the project on the server to the current version of the repository?

Trial implementations cause permission issues and ultimately fail.
There is a lot of information on the network on a similar problem, but it was not possible to find a solution.

Answer 1

If we are talking about a working server, then in my opinion it would be more correct to do export, and not update.
What specific problems are you having?
In fact, the php script itself only launches some utility that already does the svn update itself, and the php task ends there.