Pass parameter to the callback function from a custom page

abdfahim

Active member
#1
What is the best way to pass some parameter to the PHP callback function from a custom page.

Let say, in a custom page, I show all the members' username and country. I have 2 buttons to sort the list by username or by country.

So, when a user clicks either of the buttons, I want to reload the data accordingly, hence need to pass the sort parameter to the PHP callback function to sort the data while fetching from the database.
 
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