Here you are.
The example should explain you quite clearly how to solve your prob.

cheers!
#!usr/bin/perl


sub meteathash()
{
    #the parameter is passed by reference via the \
    my $varhashref= shift;

    #we need to CAST the reference as a hash
    #Same method would be used for arrays too
    %varlocalhash= %$varhashref;
    
    foreach $varkey (keys (%varlocalhash))
    {
        print STDERR "\nKey local: $varkey Value: " . $varlocalhash{$v
+arkey};
    }
    
}

@varkeyz= ('a','b','c','d');
@varkeyztwo= ('aa','bb','cc','dd');
@varvaluez=(1,2,3,4);

=comment
print STDERR "\nkeyz: @varkeyz";
print STDERR "\nvalz: @varvaluez";
=cut

@varhash{@varkeyz}= @varvaluez;
@varhashtwo{@varkeyztwo}= @varvaluez;

=comment
foreach $varkey (keys (%varhash))
{
    print STDERR "\nKey: $varkey Value: " . $varhash{$varkey};
}
=cut

&meteathash(\%varhash);
print STDERR "\nherecomesthesecondhash";
&meteathash(\%varhashtwo);

[download]

In reply to The solution is to pass-by-reference by Olecram
in thread Passing Hashes to Functions by Anonymous Monk

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