hi, I am not very good at php stuff, but I need to edit files for my site, I need to do this in php.ini, but I not sure where this files is, can someone tell me
That really didn't make much sense - do you need to edit .php-files on your server? Or do you need to edit the php.ini-file on your server? If it's the latter (the php.ini-file), then there are several scenarios - if you're running this on a local test-server, search for the php.ini-file and edit it. If this is on a dedicated server (hosted), then you can do pretty much the same (search and edit). If you're on a shared hosting / web-hotel solution, you probably can't access the server's php.ini-file. If you tell us what you need to do, maybe we can help you find a way to do it.
php.ini is in different places on different servers. In unix/linux it's usually somewhere beneath /etc/ but it could be in different subdirectories. Try the "locate" command from your ssh connection: locate php.ini.