#! perl -slw
use strict;
use Data::Dump qw[ pp ];

sub dumpIt {
    my $r = shift;
    my $d = shift() // 1;
    die "'$r' not a hashref" unless ref $r eq 'HASH';
    print "{" if $d == 1;
    for( keys %$r ) {
        if( ref $r->{ $_ } ) {
            print chr(9) x $d, "$_ => {";
            dumpIt( $r->{ $_ }, $d + 1 );
            print chr(9) x $d, "}";
        }
        else {
            print chr(9) x $d, "$_ => $r->{ $_ }";
        }
    }
    print "}" if $d == 1;
}

my %multiLevelHash = (
    'firstSampleKey' => 'SampleValue',
    'secondSampleKey' => {
        'secondLevelSampleKey' => {
            'thirdLevelSampleKeyOne'   => 'thirdLevelSampleValue',
            'thirdLevelSampleKeyTwo'   => 'thirdLevelSampleValue',
            'thirdLevelSampleKeyThree' => {
                'fourthLevelSampleKey' => 'fourthLevelSampleValue',
            }
        }
    }
);

dumpIt( \%multiLevelHash );

__END__
C:\test>junk90
{
        firstSampleKey => SampleValue
        secondSampleKey => {
                secondLevelSampleKey => {
                        thirdLevelSampleKeyTwo => thirdLevelSampleValue
                        thirdLevelSampleKeyThree => {
                                fourthLevelSampleKey => fourthLevelSampleValue
                        }
                        thirdLevelSampleKeyOne => thirdLevelSampleValue
                }
        }
}