Set all directories to 755, and all files to 644

gistfile1.txt

If you need a quick way to reset your public_html data to 755 for directories and 644 for files, then you can use something like this:

cd /path/to/sites/site/docroot
find . -type d -exec chmod 0755 {} \;
find . -type f -exec chmod 0644 {} \;


additionally, if you know php runs as the user and not as "apache", then you can set php files to 600, for an extra level of security, eg:
find . -type f -name '*.php' -exec chmod 600 {} \;

* Borrowed from: https://help.directadmin.com/item.php?id=589