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Answers and rating deltas for

What does the '0x0'. do in this equation $intTotal += '0x0'.$value;

Author Votes Δ
Kate Miháliková 0 +0.21
Rahul Tripathi 0 +0.11
Zebra North 0 -0.13
Last visited: May 1, 2015, 9:23:21 PM