Sort array using array_multisort() with dynamic number of arguments/parameters/rules/data
array-multisort, dynamic-programming, php, sorting, variadic-functions
Solution
You could try to use call_user_func_array. But I've never tried it on a built-in function before. Here is an example:
$dynamicSort = "$sort1,SORT_ASC,$sort2,SORT_ASC,$sort3,SORT_ASC";
$param = array_merge(explode(",", $dynamicSort), array($arrayToSort))
call_user_func_array('array_multisort', $param)
Problem
I'm trying to sort any array with `array_multisort()` and everything is working great. However, based on conditions in my script, I need to change the options. What I have so far is this: ``` array_multisort( $sort1, SORT_ASC, $sort2, SORT_ASC, $sort3, SORT_ASC, $arraytosort ); ``` I would like to write something that will allow a more flexible/dynamic payload of sorting data/rules. Something like this: ``` $dynamicSort = "$sort1,SORT_ASC,$sort2,SORT_ASC,$sort3,SORT_ASC,"; array_multisort( $dynamicSort, $arraytosort ); ``` How can I feed an unknown number of parameters to `array_multisort()` and have it modify the `$arraytosort` array?