Creating directory & files with group permission of server

[psaurabh]

As i have often seen that when i have to make a directory writable or file writable using HTTP protocol , i have to change the file permission. That makes security concerns.

Is it possible through HTTP to create directory create files, delete directory & files without changing the file or directory permission.
has PHP got function for this .

if it is not possible then is what is the FTP command ( for PHP) creating directory , files etc)

Please if anyone can help.

Thanks

[psaurabh]

I forgot to mention that the files created will be used in writing text files with php functions like fputs, etc. so either the directory or file should have open permission which is not secure.

So is there any function which would create file or write/ append file using group permission or owner permission through PHP

Thanks
saurabh