First, let's clear some confusion. Unicode doesn't specify how characters are stored, so you can't possible be talking about Unicode when you're talking about a string of bytes. It looks like you meant UTF-8 when you said Unicode. UTF-8 is a means of representing (encoding) Unicode characters in bytes. 

$string =~ s/([^a-zA-Z0-9])/'&#'.unpack('U0U*',$1).';'/eg;

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can also be written as 

use HTML::Entites qw( encode_entities );
$string = encode_entities($string);

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and 

use Encode qw( encode );
$string = encode('US-ASCII', $string, Encode::FB_HTMLCREF);

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No need to reinvent the wheel.

If you use the latter, you can combine the decoding and encoding into one step. 

use Encode qw( from_to );

sub unicode_decode
{
  my $string = shift;
  from_to($string, 'UTF-8', 'US-ASCII', Encode::FB_HTMLCREF);
  return($string);
}

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In reply to Re: Unicode to HTML code &#....; by ikegami
in thread Unicode to HTML code &#....; by Forlix

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