for ( 0..$#{$self->session->param('item')} ) {
    print $self->session->param('item')->[$_]."\n";
}

##</code><code>##

# to iterate the elements directly
for my $conf ( @{$self->session->param('item')} ) {
    print "$conf\n";
}

##</code><code>##

for ( my $i; $i <= $#{$self ->session->param('item') }; $i++ ) { 
    print $self -> session -> param('item') -> [$i ] . "\n";
}