flash, php, apache

[moovida]

I don't know if this is the right forum, but that could interest more people:

I generate passwords for a weblogin with flash. Then I pass them to a php script.

The step after is to create with htpasswd on Apache the passwords. The problem is that a php script is executed as apache, since called by a browser and has not the right to create the logins in the home directory of my user.
I have no telnet access, just ftp.

How can such a problem be solved?

Thanks for any hint
Ciao