The following code should work fine, assuming $data contains what you're trying to split:

#!/usr/bin/perl -w
 
use strict;
 
my $data = q|Title Line
    Author Line
    URL Line
|;
 
my @data = split /\s*\n\s*/, $data;
 
my $i;
for ($i=0; $i<=$#data; $i++){
    print "$i: $data[$i]\n";
}
[download]

However, if you're reading from a file, i suspect you want something more like this:

#!/usr/bin/perl -w
 
use strict;
 
open DATA, 'splitdata.txt';
 
my @data;
while (<DATA>) {
    chomp;
    s|^\s+||;
    s|\s+$||;
    push @data, $_;
}
 
my $i;
for ($i=0; $i<=$#data; $i++){
    print "$i: $data[$i]\n";
}
[download]