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Answers and rating deltas for

How to check if the value already exist or insert in my database? php

Author Votes Δ
Dinesh Suthar 0 +1.59
Sarah Dominguez Perea 0 +1.51
mickmackusa 0 +0.10
Kerem Taşpınar -1 -3.90
Last visited: Jun 17, 2019, 2:59:36 PM