How Do You Edit The PHP.INI File?

[Ntrimgs]

How do you edit the php.ini file on a dedicated server? I know you need to log into the SSH interface, but then what??? I need to set the upload_tmp_dir and I need to set display_errors to on.

[Yelgnidroc]

Is it a Linux server? If so find it (using the find command find / -name php.ini) then edit it with vi e.g. vi /etc/php.ini