I've encountered the following warning in the admin:
Call to deprecated function zen_string_to_int. Use a closure instead.
The function is a callback function in array_map. Can someone please explain what a closure is and how to use it to avoid the warning?

The entire log message (edited for security) follows:
[23-Apr-2025 10:19:59 America/New_York] Request URI: /admin/index.php?cmd=products_with_attributes_stock&products_id=800&quantity=0&customid =myID&skuTitle=myTitle&attributes=,,,,,,164209,,,,,,,,,,,&add_edit=add&action=ex ecute, IP address: ::1, Language id 1
#0 [internal function]: zen_debug_error_handler()
#1 /myDomain/includes/functions/functions_strings.php(406): trigger_error()
#2 [internal function]: zen_string_to_int()
#3 /myDomain/admin/products_with_attributes_stock.php(620): array_map()
#4 /myDomain/admin/index.php(11): require('/...')
--> PHP Deprecated: Call to deprecated function zen_string_to_int. Use a closure instead in /myDomain/includes/functions/functions_strings.php on line 406.
Thank you.
Dave