as long as

conjunction

Used other than figuratively or idiomatically: see as, long.
“It took three times as long as I expected (= three times longer than I did).”
Provided that, if, assuming (depending upon some condition or requirement).
“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”
For the entire duration that; while; since.
“As long as you're here, you may as well help me with the garden.”

Used other than figuratively or idiomatically: see as, long.
“These meetings can last as long as three hours.”