I have been pondering this for a few days now and I always seem to run into a problem when I want to use strict (which every good perl programmer should) and I have the first use of a variable inside of a loop or if statement. If I want to later print that variable or refer to it some other way I have to either declare it as a global variable or pass the results out of the specific function.

For Example: 

#!/usr/bin/perl -w

use strict;

die "Required argument missing!\n" unless ($ARGV[0]);
if ($ARGV[0] =~ /Hello/i) {
   my $response = "Hello to you.\n";
}else{
   my $response = "Huh?\n";
}
print $response;

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Now if I syntax check this or run it I would get the following error.

Global symbol "$response" requires explicit package name at syn_check line 11. syn_check had compilation errors.
What is the best way to pass the variable $response out of the if statement to make it visible at another level? Remember I do not want to make the variable global either.

In reply to Best way to pass variables? by Elijah

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