You can use some of the more traditional IDEs. For example, Eclipse, Zend. Personally though, I find these too heavy. Feels like I'm developing a Java application which is a pain For that reason, I use EditPlus. It's lightweight, and should suit your needs.
thanks guys didnt realised about this PHP editor, mostly before thsi Im using notepad I should start to migrate now lol BTW, whats your suggestion for beginner like me?
Dreamweaver is good, if you need the WYSIWIG for making pages, however, I prefer PHP Designer 2008, though i'm not sure if an updated version exists.
I think HTMLPad is good for a programmer. Its have many advance features. try it if you are interest.
Dreamweaver is bit expensive but it's good value! Zend we require a bit of understanding, but very useful in debugging the code and some advance formating features. Again some what expensive. Eclipse is good free IDE with many integrated tools.
you need to learn to write code in Notepad... everything else is the weak way out. If you know how to write code in notepad then you can take any php script you find on the internet and then edit it to how you like it