Function to change display according to product category

[sromain]

Hi,

 

I would like to create a function that changes the price text on product page.

Actually the price on my product page is display by this line of code :

 

<span id="our_price_display" itemprop="price">{$productPrice|regex_replace:"/[\\{$currencySign}]/":""}€/week</span>

 

I have created a category "day" and I would like that products which are on "day" category display this line of code :

 

<span id="our_price_display" itemprop="price">{$productPrice|regex_replace:"/[\\{$currencySign}]/":""}€/day</span>

 

All my products are rented by week but I have 20 products that are rented by day, that's why I want to create this function.

 

I don’t know how to integrate this function in the code and if it is possible. If you could help me it would be nice

 

Kind Regards,

Romain