How to do git pull from PHP or webhook for bitbucket?

Question

PHP

I have the following code:

echo shell_exec('cd ' . $dir . ' && /usr/bin/git pull origin HEAD');

If I run it from the VPS console - everything works fine.
If I run purely from nginx (well, through the address bar) - it does nothing.
In general, I implement a web-hook for BitBucket to do git pull origin HEAD when I uploaded changes to the branch from the local computer.

Answer 1

The webserver does not have permission to run/write files from the .git folder

Answer 2

To remove the notorious comment prompt, use the -m switch:

echo shell_exec('cd ' . $dir . ' && /usr/bin/git pull origin HEAD -m "Merge with origin"');