Looking on the internet deeply has found these results:

I have been here for a long time is the most popular phrase on the web.

i have been here from a long time 11 results on the web	I have been here for a long time 18,510 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Hello I have been here from a long time. I did not see them misbehave. What is the problem? The cop threatened he would take me also to the Station.	I have been here for a long time now, and I have not seen myself in a mirror once. They don't allow mirrors here. Probably they don't want you to be shocked by ... Jun 7, 2012 ... @user132317: Whilst it's true "I have been here for a long time" implies you are still here, your example sentence uses "I haven't (have not). 'Omg I have been here for a long time!' 'Energy Aviation refueling Life Flight. :)'. ' Going to get my learning on!!!' Near Geisinger Life Flight #4 Base. Report. I have been here for a long time and appreciate the working relationship I have made with many people. Bluffton is a great town and I am blessed to work in such ...

i have been here from a long time

11 results on the web

I have been here for a long time

18,510 results on the web

More popular!

Hello I have been here from a long time. I did not see them misbehave. What is the problem? The cop threatened he would take me also to the Station.

I have been here for a long time now, and I have not seen myself in a mirror once. They don't allow mirrors here. Probably they don't want you to be shocked by ...
Jun 7, 2012 ... @user132317: Whilst it's true "I have been here for a long time" implies you are still here, your example sentence uses "I haven't (have not).
'Omg I have been here for a long time!' 'Energy Aviation refueling Life Flight. :)'. ' Going to get my learning on!!!' Near Geisinger Life Flight #4 Base. Report.
I have been here for a long time and appreciate the working relationship I have made with many people. Bluffton is a great town and I am blessed to work in such ...