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Answers and rating deltas for

What is a ABSTRACT CLASS and INTERFACE and when would you use them in PHP?

Author Votes Δ
ngroot 6 +4.19
Matthew 4 +0.57
coolgeek 1 -0.88
Kevin 1 -1.12
grossvogel 0 -0.81
Last visited: Sep 14, 2014, 5:07:29 AM