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sort_array() - sort an array
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mixed *sort_array( mixed *arr, string fun, object ob );
mixed *sort_array( mixed *arr, function f );
mixed *sort_array( mixed *arr, int direction );
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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.
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filter_array(3), map_array(3), strcmp(3)
Page 1 (Writen 5/23/97)