in reply to subroutine scalar string input

When you pass arguments to a subroutine, they are passed in via the special array @_. To get them back into named scalars, assign that to the name(s) you want:

my $html = "hello";

routine( $html );

sub routine{
    my( $arg1 ) = @_;
    print $arg1;
}

[download]

NOTE: the variable name $arg1 is just an example.

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

RIP Neil Armstrong

In Section Seekers of Perl Wisdom