what does this rules in .htaccess means

hi
my manager wants me to tell him what this rules means

RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(.*)$ main.php [QSA,L]
can you please tell me because I'm newbie
please help as soon as possible
best regards
hatem gamal
hatem_from_mesrAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

qualipsoftCommented:
Turn on the rewrite engine
    RewriteEngine on

If the file requested is NOT a regular file...
    RewriteCond %{REQUEST_FILENAME} !-f

... then rewrite the URI (part relative to directory where the .htaccess is located or specified in last RewriteBase command) with main.php. QSA keeps any query string part and appends new ones and L specifies this is the last rewrite rule. For example http://host/current/dir/subdir/notafile?lang=en -> http://host/current/dir/main.php?lang=en.
    RewriteRule ^(.*)$ main.php [QSA,L]
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Apache Web Server

From novice to tech pro — start learning today.