Topic awaiting preservation: how do I write to files(adding stuff, etc) (Page 1 of 1)

I know the chmod bit, but that's not what I'm asking,
I'm asking how you make a php file write to another file and add to it without corrupting it, or overwriting the current data.
trying to make something that can take care of adding new pages to my site easily by uploading a .txt file and adding the info to a file that takes care of the switch variable which is included to my main index file.
and have something that will edit my php files online, instead of having to keep opening ftp up.

first do
http://www.php.net/manual/en/function.fopen.php
with a+ as mode
then do
http://www.php.net/manual/en/function.fputs.php
to write to the file.

finally do
http://www.php.net/manual/en/function.fclose.php
to close the file after writing.