I got this from one friend
<?php 
?> 
<form method="post" action="script.pl"> 
<textarea name="mytextarea">textarea content</textarea> 
<input type="submit" name="submit" value="submit" /> 
</form>

##</code><code>##

#!/usr/bin/perl 
use strict; 
use warnings; 
use CGI ':standard'; 
 
my $mytextarea = param('mytextarea'); 
 
print "Content-type: text/html\n\n"; 
print "$mytextarea";

##</code><code>##

"Server error! 

The server encountered an internal error and was unable to complete your request. 

Error message: 
Premature end of script headers: *.pl"