So by far, my most favourite PHP editor is Atom by GitHub.
Atom by GitHub (Download Now)
If you are looking for a pretty good PHP editor that is free – Atom may be the way to go. There is a very good Lynda video on how to use Atom.
On Windows, you can add “packages” by going to File -> Settings -> then Install.
Some really good packages include:
project-manager – for easy access and switching between projects (required)
remote-ftp – enable browsing remote files (required)
atom-beautify – this takes the code and makes it look better with formatting
color-picker – obviously lets you use a gui to pick the colour you want.
highlight-selected – highlights the current word selected when double clicked
minimap – a preview of full source code on the left-hand side