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Answers and rating deltas for

What does this regex in php mean?

Author Votes Δ
user229044 6 +1.09
Casimir et Hippolyte 0 +0.15
Reeno 0 +0.18
Ilion 0 +0.14
Vogel612 0 +1.17
Boris the Spider -1 -1.56
Last visited: Sep 14, 2014, 5:07:29 AM