Perl CGI Meta tags

Per http://perldoc.perl.org/CGI.html to make meta tags, the following example is given:

pr开发者_如何转开发int start_html(-head=>meta({-http_equiv => 'Content-Type',-content => 'text/html'}))

However using the following code:

#!/usr/bin/perl
use strict;
use warnings;
use CGI;

my $cgi = new CGI;
$cgi->autoEscape(undef);
$cgi->html({-head=>meta({-http_equiv => 'Content-Type',-content => 'text/html',-charset=>'utf-8'}),-title=>'Test'},$cgi->p('test'));

I get the following error:

$ perl test.cgi Undefined subroutine &main::meta called at test.cgi line 8.

I'm trying to generate the following tag:

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

The meta sub is not imported automatically when you use CGI;. Try with

use CGI "meta";

(or ":all").

#!/usr/bin/perl
use strict;
use warnings;
use CGI qw(:all);

my $cgi = new CGI;
$cgi->autoEscape(undef);
$cgi->charset('utf-8');
print
    $cgi->start_html(
        -head  => meta({-http_equiv => 'Content-Type', -content => 'text/html'}),
        -title => 'Test'
    );

But, are you 100% sure than want use CGI for web development and not something better, like PSGI/Plack?

This post is quite old but the solution is easy: the meta is a method of the object $cgi so use it as method.

your example

#!/usr/bin/perl
use strict;
use warnings;
use CGI;

my $cgi = new CGI;
$cgi->autoEscape(undef);
$cgi->html({-head=>$cgi->meta({-http_equiv => 'Content-Type',-content=>'text/html',-charset=>'utf-8'}),-title=>'Test'},$cgi->p('test'));

I simply added $cgi-> in fromt of meta.