Hi Droog,
why don't you try Googling for one of these free php editors. In combination with php installed, you can practise all you want..
PHP Designer 2005 3.0.6
Freeware
Windows
VIM 6.1
Freeware
Windows
Unix
Linux
HTML-Kit 292
Freeware
Windows
Anjuta 1.0.1
Freeware
Unix
Linux
Quanta Plus 3.2.1
Freeware
Linux
Kate 2.2
Freeware
Linux
................... ................... list cut ................... ...................
Hmmm, I think that's enough.. 😉
Greets,
Gh0sT