If you're developing in PHP and want that development to take place within an IDE, CodeLobster offers a no-cost solution.
Written by Stanislaus Ustimenko
Code development, particularly for creation of websites, often calls for the use of PHP, HTML, CSS, or JavaScript for best results. CodeLobster PHP Edition is a portable IDE that embodies a code editor and numerous other utilities for such projects and is available in a freeware and two licensed shareware versions.