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How to determine if while loop returns nothing from db in php?

Author Votes Δ
Keilo 3 +3.99
Aniruddha Chakraborty 1 +2.51
Jon Story 0 -1.84
Kiwi Juicer 0 -1.82
Rene Korss 0 -0.36
Last visited: Mar 10, 2016, 6:57:03 PM