htaccess RewriteRule redirecting to parent directory?

Question

I cant understand how to redirect to the parent directory in this case: I have a root directory with .htaccess file, where rewriteEngine is on. In this directory I have a fi

Answer 1

You wrote:

When there is request to "forum.mySite.com/rootFile.php", I need to redirect it to "mySite.com/rootFile.php" which means I need to redirect request to the parent directory.

Did you mean:

When there is request to "mySite.com/forum/rootFile.php", I need to redirect it to "mySite.com/rootFile.php" which means I need to redirect request to the parent directory.

...Which in turn means:

When there is request to "/forum/rootFile.php", I need to redirect it to "/rootFile.php" which means I need to redirect request to the parent directory.

In your .htaccess in the /forum dir try this:

RewriteEngine On
RewriteRule ^rootFileName(.*) /rootFile.php  [QSA,R=301,L]