as far as

as far as or so far as  {adv. phr.}

1. To the degree or amount that; according to what, how much, or how far.

John did a good job as far as he went, but he did not finish it.

So far as the weather is concerned, I do not think it matters.

As far as he was concerned, things were going well.

2. To the extent that; within the limit that.

He has no brothers so far as I know.

Compare: FOR ALL (2).