cec-client trough php returns nothing

Question

I am trying turn on my TV via the web, i am trying to do this via Raspberry PI LibCec module.

when i run echo shell_exec("sudo echo 'on 0' | cec-client -s"); nothing is returned on the php page and my TV is NOT on.

When i run the same command sudo echo 'on 0' | cec-client -s (or without sudo ) in ssh connection the tv turns on, EVEN when i login as www-data on ssh.

When i run echo shell_exec('whoami'); i do get www-data as result so whats going on?

The question has been asked before but there isnt any confirmation on the priviliges as answered here: EXEC() in php, cec-client raspberry

Answer 1

YES!

It was a $PATH problem, as i ran echo $PATH on php i got a smaller list then i got on my ssh session.

So to solve it in my case i used full path towards cec-client which was: /opt/xbmc-bcm/xbmc-bin/bin/cec-client

as that was the only cec-client i could find...

Hope this helps others!

Would someone please help me by telling me how to make my php session $path include the path towards my cec-client as i dont want to use the full dir all the time.