I suspect that URI::Escape is the right choice. Here's a bit of code to compare them: 
my $url = 'http://www.myothersite.com/myotherwebapp2/foo.asp?param=1&p
+aram=3';

use CGI;
print "Using CGI Escape:\n";
my $esc_url = CGI::escapeHTML $url;

print "$url\nbecomes\n$esc_url\n\n";

use URI::Escape;
print "Using URI Escape:\n";
$esc_url = uri_escape($url);
print "$url\nbecomes\n$esc_url\n";

[download]
Output is: 
Using CGI Escape:
http://www.myothersite.com/myotherwebapp2/foo.asp?param=1&param=3
becomes
http://www.myothersite.com/myotherwebapp2/foo.asp?param=1&param=3

Using URI Escape:
http://www.myothersite.com/myotherwebapp2/foo.asp?param=1&param=3
becomes
http%3A%2F%2Fwww.myothersite.com%2Fmyotherwebapp2%2Ffoo.asp%3Fparam%3D
+1%26param%3D3

[download]
The PerlMonk tr/// Advocate

In reply to Re: Re: Re: encoding URLs in URLs by Roy Johnson
in thread encoding URLs in URLs by water

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.