.\"sort an array
.TH sort_array 3
.SH NAME
sort_array() - sort an array
.SH SYNOPSIS
mixed *sort_array( mixed *arr, string fun, object ob );
.SH DESCRIPTION
Returns an array with the same elements as `arr', but quicksorted in
descending 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).
.PP
Here are two common forms for the compare function to take:
.IP
.nf
int compare(string one, two) {
    return strcmp(one, two);
}
int compare(int one, two) {
    return (one - two);
}