[Solved] Calculate SUM in PHP


Incidentally, everything up to while ($row... can be rewritten as follows:

SELECT p.product_name
     , p.birim
     , SUM(p.quantity) total 
  FROM urun u
  JOIN product p
    ON p.product_name = u.urun
   AND p.quantity > 0
   AND p.grup != 'uygulama' 
   AND p.skt > CURDATE()
 GROUP 
    BY p.product_name
     , p.birim;

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solved Calculate SUM in PHP