any and all suggestions would be appreciated

arthas's answer is essentially correct. If "database" intimidates you, think "cache". A flat file works, though you'll be rewriting it each time you record a page hit from a user. Depending on your site load, this may or may not be an issue.

No matter how you decide to capture data, it suffices to record a username and a "last visited" timestamp. The timestamp is used to determine who to show as being online. You might, for example, say that any user who has hit the website within the last 5 minutes is "online". Depending on how you're keeping records, the timestamp can also be used to expire a user from the cache.


In reply to Re: how do to a 'who is online' feature by dws
in thread how do to a 'who is online' feature by idova

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.