Re^2: Best Way to Get Length of UTF-8 String in Bytes?

[Jim]

Thank you, ikegami.

Here's what I had tried before posting my inquiry:

#!perl

use strict;
use warnings;
use open qw( :utf8 :std );
use utf8;

# 'China' in Simplified Chinese
#          中        国
# Unicode  U+4E2D    U+56FD
# UTF-8    E4 B8 AD  E5 9B BD

my $text = '中国';
my $length_in_characters = length $text;
print "Length of text '$text' in characters is $length_in_characters\n";

{
    use bytes;
    my $length_in_bytes = length $text;
    print "Length of text '$text' in bytes is $length_in_bytes\n";
}

{
    require Encode;
    my $bytes = Encode::encode_utf8($text);
    my $length_in_bytes = length $bytes;
    print "Length of text '$bytes' in bytes is $length_in_bytes\n";
}

And here's its output:

Length of text '中国' in characters is 2
Length of text '中国' in bytes is 6
Length of text '中国' in bytes is 6

(I couldn't use <code> tags here due to the Chinese characters in both the script and its output.)

Jim