I did tried your product and it is nice, altough there are some comments to make:

1. PHP syntax highlight sometimes not working at all.
2. How can i close a document?
3. I had to define the colorization
4. Error messages are in French?
5. I personally don't like the variable colorization: I found annoyin to separate the '$' and the 'variablename'
6. Otherwise it is clean and useful editor, congratulations!!!

Keep up the good work!