PHP exec适用于apache2但不适用于nginx

Question

I'm trying to launch unoconv using exec in php. It works with apache2, but not with nginx. I've already checked my php.ini and disable_functions not contain exec in both apache2 and nginx php.ini files.

Answer 1

I'm not familiar with unconv, but I've had a similar problem with porting my server from Apache to nginx and exec .

nginx + php-fpm have a bare minimal $PATH set compared to apache , and it's likely your unoconv is not on that path.

You could try modifying your PATH settings, but a better way would be to specify the absolute path of unoconv

You can find the absolute path by using

which unoconv

You should also re-direct the error output to stdout, so you can see exactly why unoconv isn't starting

exec("/path/to/unoconv -param0 -param1 2>&1", $output);
print_r($output); //this should give failure reason

Answer 2

Check out this post : PHP exec() does not run all commands

As said in this post :

The problem is that you're running notify-send from a service. Notify-send is a desktop-oriented program which interacts with the display. But nginx runs without being attached to a display.

Imagine, for example, that there are 3 people logged on to the computer at the same time, all with different displays. When notify-send runs, it wouldn't know which display to send the notification to.