I am flash man to learn php
I don't know if there is a visual tool like dreamweaver in windows in linux.
Thank you very much
Don't use a visual tool. Use something like vim or pico, or something that might give you a little more control, like Quanta.
Or emacs, Zend studio (if you don't mind forking out a bit of cash), bluefish, jEdit (written in Java so cross-platform) etc etc
Have a look at PHP Editors