As Long As Meaning

(idiomatic) while, since.

Example: Used other than as an idiom: see as,‎ long,‎ as.
  I don't mind if he stays there, as long as he cleans up after himself when he's done.
  I don't care who you are, where you're from, what you did, as long as you love me — Backstreet Boys:As Long As You Love Me
  As long as you're here, you may as well help me with the garden.