How to access the php.ini from my CPanel?

How to access the php.ini from my CPanel?

I want to change the limit of the php POST array from 1000 to 6000 . Is
there any way to do that ? i search about that and i found that i should
change some variables in php.ini but the problem is that i did not find
the directory of the file in my cpanel :
Your server's php.ini file is located at /usr/local/lib/php.ini.
This line is from the CPanel documentation but i could not find this
directory in my cpanel even after i show the hidden files???? can anybody
help me locating this file?