Random view of items in custom LISTING BLOCK on the HOME PAGE

[Tristan]

We've created a LISTING BLOCK on the HOME PAGE to increase our audience.
In this block a number of favorite items have been selected.
We would like that when buyers return to their home page, they can see random items in this block.
20 articles would be enough to appear in this block!
We need help to solve this problem.
Any suggestions are welcome.
Thank you in advance.

[eCommerce Core]

Listing block data is extracted in this controller:
https://github.com/abantecart/abantecart-src/blob/master/public_html/storefront/controller/blocks/listing_block.php#L238

There are 2 types: predefined and custom lists.

If you use custom list manually picked, you can add random sorting with PHP shuffle
https://github.com/abantecart/abantecart-src/blob/master/public_html/storefront/controller/blocks/listing_block.php#L375

http://php.net/manual/en/function.shuffle.php