Another variation for sorting a multi dimensional hash.

#!/usr/bin/perl
# Sorting a multi dimensional hash example.

my %user, $uname, $i, $score;

my @List = qw(Charlie Madi Becky Paul);

foreach $uname (@List) {
 $user{$uname}{'user'}=$uname;
 $user{$uname}{'score'}=int(rand(800))+100;
}

# unsorted
print "- unsorted -\n\n";
foreach $i (keys %user) {
 print "$user{$i}{'user'}\t$user{$i}{'score'}\n";
}

# Sort ascending on score dimension
print "\n\n - Sort on score dimension ascending -\n\n";
foreach $i ( sort { $user{$a}{'score'} <=> $user{$b}{'score'} } keys %
+user) {
 print "$user{$i}{'user'}\t$user{$i}{'score'}\n";
}

# Sort descending on score dimension
print "\n\n - Sort on score dimension descending -\n\n";
foreach $i ( sort { $user{$b}{'score'} <=> $user{$a}{'score'} } keys %
+user) {
 print "$user{$i}{'user'}\t$user{$i}{'score'}\n";
}

exit 0;
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Sample output
# perl hsort2d.pl
- unsorted -

Paul      684
Becky   162
Charlie  694
Madi     805

- Sort on score dimension ascending -

Becky   162
Paul      684
Charlie  694
Madi     805

- Sort on score dimension descending -

Madi     805
Charlie  694
Paul      684
Becky   162

#