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Answers and rating deltas for

How to interpret this PHP statement?

Author Votes Δ
Karolis 1 +2.87
CristiC 1 +0.40
Paul Manta 0 -2.04
James Allardice 0 -1.97
moteutsch 0 -2.06
Last visited: Sep 14, 2014, 5:07:29 AM