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Editorial Team
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Asked: 2026-06-09T15:36:51+00:00

If this question seems like a possible duplicate, I’m sorry. please link me to

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If this question seems like a possible duplicate, I’m sorry. please link me to the original.

I am developing a shopping cart with php and mysql.

In the admin panel, multiple currency types can be set, and new currency types can be added. It will have a default currency and a coversion rate.
My problem is when changing the default currency type.

This is what my tables look like

**Currency**
------------------------------------------------------------------------------
ID    CurrencyType        ConversionRate           IsDefault
------------------------------------------------------------------------------
1       type1                 -                      y
2       type2                 2.0                    n
3       type3                 3.0                    n
------------------------------------------------------------------------------

**Product**
------------------------------------------------------------------------------
ID     Rate        
------------------------------------------------------------------------------
1      100
2      200      
------------------------------------------------------------------------------

Here for the price for product 1 will be 

(100) for currency type1
(100 * 2.0) for currency type2
(100 * 3.0) for currency type3

In the admin panel, the conversion rates will added with respect to the default currency type.

Here while changing the default type, I can update the conversion rates in the currency table.
But I am having to update the rate in the product table. Changing the rates for all products in the product table, made me feel that I am wrong.

Is there any other better way to do.? please advice.

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1 Answer

  1. Editorial Team

    I found a solution with which i need not update the product table.. I am gonna have a HIDDEN currency type which will be the default for the calculations.. The rate in the product table will be always be *1 to this currency type

    Can make the necessary calculations in the admin panel so that the admin can still enter the rate of the new product in his default currency type..

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