How do I add a condition to an existing conditional expression?

I had a programmer write a Perl script for my site.

One of the functions is to update price/stock when a certain condition is met.

# update when price/stock conditions met
if ( ($force_price_updates == 1) || 
     ($data->{'price'} <= $product_price && $data->{'quantity'} > 0) ||
     ($product_quantity == 0 && $data->{'quantity'} > 0) ) {

What the above is not doing is not updating the price if the new price is higher. It updates the stock value, but if the new stock comes at a higher price, I lose out. Stock gets updated and but the price is not.

The script goes through a number of feeds and if the sa开发者_Python百科me product is found in any of the feeds, the script should amend price/stock change according to the rule above.

I can't find the programmer and my Perl knowledge is limited. I understand what the code is doing, but don't know what it should do if the price is higher and stock is greater than zero.

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You can add the extra condition you're looking for to that statement.

The condition you're looking to match is:

$data->{'price'} > $product_price && $product_quantity > 0

So the final version would look like this:

if (($force_price_updates == 1) || ($data->{'price'} <= $product_price && $data->{'quantity'} > 0) || ($product_quantity == 0 && $data->{'quantity'} > 0) || ($data->{'price'} > $product_price && $product_quantity > 0)) {