sort_array() - sort an array

mixed *sort_array( mixed *arr, string fun, object ob );
mixed *sort_array( mixed *arr, function f );
mixed *sort_array( mixed *arr, int direction );

The  first  form  returns an array with the same elements as 'arr', but
quicksorted in ascending order according to the rules  in  'ob->fun()'.
'ob->fun()'  will  be  passed  two  arguments for each call.  It should
return -1, 0, or 1, depending on the relationship of the two  arguments
(lesser, equal to, greater than).

The second form does the same thing but allows a function pointer to be
used instead.

The third form returns an array with the same elements  as  'arr',  but
quicksorted using built-in sort routines.  A 'direction' of 1 or 0 will
quicksort in ascending order, while a 'direction' of -1 will  quicksort
in  descending  order.   A  limitation of the built-in sort routines is
that the array must be homogeneous, composed entirely of a single type,
where  that type is string, int, or float.  Arrays of arrays are sorted
by sorting based on the first element, making database sorts possible.

filter_array(3), map_array(3), strcmp(3)