Many HTML editors are supporting PHP. In near future every HTML editors and XML editor will be supporting PHP "Rapid Application Development" tool.
You will notice that some of the PHP editors run only on MS Windows. Yes!! there are millions of PHP developers on MS Windows platform. PHP is IMMENSELY POPULAR on Microsoft Windows platform and is surprisingly more popular than Microsoft's own ASP web scripting language!! PHP runs lot faster than ASP on MS Windows and has more features and functionalities than Microsoft ASP. PHP is much more robust, reliable and powerful than ASP. There are more PHP users under MS Windows98/NT/2000 than on any other operating system!! PHP initially started on Linux/unix environment but today there are more PHP developers on MS Windows platform as compared to unix.
PHP IDE tools are at :
PHP IDE/editor on MS Windows platform are :
PHP IDE/editor for bot MS Windows and Linux platforms are :
The best IDE for PHP on linux is Coffeecup Editor as given below:
To convert ASP scripts to PHP use this utility http://asp2php.naken.cc