create personal aspell dictionary/word list

Hello,
I'm trying to use a spell check functionality in my website, and ended up discovering pspell (for PHP) and I know it uses aspell.

Then (I think) I found out that it's possible to create personal dictionaries or word list. I used PHP functions pspell_config_create, pspell_config_personal, among others, wthout success.

I searched through the aspell gnu page, but I'm not being able to create a custom dictionary in any way.

Can someone shed some light over this please?

Thanks!