One way to do it yourself would be: 
# assuming $_session_time is in seconds.
my $_session_time = $session{time_then};
my $_current_time = time();
my $_time_now = ($_current_time-$_session_time);
my $minutes = int($_time_now / 60);
my $seconds = $_time_now % 60;

[download]

Though this will likely fail during time changes if they are observed where this code is being run.

Alternatives include DateTime, Date::Calc, and Date::Manip.

Code lightly tested. "It works for me."

In reply to Re: Time Formatting.... by mpd
in thread Time Formatting.... by powerhouse

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.