Update Multiple Rows in one PHP

Question

I have three rows with three columns in one table

id    type       value
1     gold       1000.00
2     silver     32.21
3     platinum   1500.00
         


        

Answer 1

Why not use the metal name as your key?

$update="UPDATE metals SET value = '".$gold."' WHERE type = 'gold'";

And you really need to switch to prepared statements. You're wide open to SQL injection