Can I mess up my Wordpress site if I change
functions.php file for my custom theme?
One time I added some code to it and it gave me some PHP errors and my site was inaccessible. Luckily it was in the early stage of the website so I just reinstalled Wordpress.
So, my actual question is - does
functions.php file have any influence on any other file or database or any other part of the website? If I have a back up of the
functions.php file, can I just replace the screwed up file via FTP or do I have to do something else?
The same questions goes for
.htaccess file - if I add this code:
php_flag register_globals off
to it, can I change something irreversibly or do I just upload the back up and all goes back to normal?