always_populate_raw_post_data=-1

I’m trying to install piwick. I’m using php version 5.6.8.
I’ve changed the php.ini file to- always_populate_raw_post_data=-1
restarted the webserver but i still get this critical error.
I also tried =>-1 =>-1 with the same result.
please can anyone advise where i am going wrong.

Chris

I removed the semi-colon from the start of the line - always_populate_raw_post_data=-1
and it now works ok