Hi,<br><br>I did it, I can make it work. I did like this:<div>- I change the session cookie lifetime in settings.php to 0.</div><div>- Delete cookie in browser.</div><div>- Don&#39;t allow browser save cookie anymore.</div>
<div>- Login and close browser, then re-open browser, I have to login again.</div><div><br></div><div>Btw, I would like to thank everybody very much.<br><br><div class="gmail_quote">On Fri, Jul 6, 2012 at 9:14 PM, Jamie Holly <span dir="ltr">&lt;<a href="mailto:hovercrafter@earthlink.net" target="_blank">hovercrafter@earthlink.net</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
  
    
  
  <div bgcolor="#FFFFFF" text="#000000">
    <div>This list is for Drupal core
      development. This question should be directed to
      <a href="mailto:support@drupal.org" target="_blank">support@drupal.org</a>.<br>
      <br>
      Your session cookie lifetimes are set in your
      sites/default/settings.php file:<br>
      <br>
      <br>
      ini_set(&#39;session.cookie_lifetime&#39;,  2000000);<br>
      ini_set(&#39;session.gc_maxlifetime&#39;,   200000);<br>
      <br>
      <br>
      <pre cols="72">Jamie Holly
<a href="http://www.intoxination.net" target="_blank">http://www.intoxination.net</a> 
<a href="http://www.hollyit.net" target="_blank">http://www.hollyit.net</a></pre><div><div class="h5">
      On 7/6/2012 7:00 AM, Nam PHAM wrote:<br>
    </div></div></div><div><div class="h5">
    <blockquote type="cite">Hi,<br>
      <br>
      I try to delete my browser&#39;s cache, cookie, everything. But It
      still not work.
      <div><br>
      </div>
      <div>thanks<br>
        <br>
        <div class="gmail_quote">On Fri, Jul 6, 2012 at 5:44 PM, Chi <span dir="ltr">&lt;<a href="mailto:advancec@gmail.com" target="_blank">advancec@gmail.com</a>&gt;</span>
          wrote:<br>
          <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
            <p>don&#39;t forget to clear your browser&#39;s cache and cookies as
              you work trying it out</p>
            <div>
              <div>
                <div class="gmail_quote">On Jul 6, 2012 4:55 AM, &quot;Nam
                  PHAM&quot; &lt;<a href="mailto:nampham@mbm.vn" target="_blank">nampham@mbm.vn</a>&gt;
                  wrote:<br type="attribution">
                  <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
                    Hello everybody,<br>
                    <br>
                    I have a problem with drupal 6.
                    <div><br>
                      I want users to log out automatically, after users
                      close the Tab of browser, or close browser.
                      <div><br>
                        <div>At the moment, when users close browser and
                          then open browser again, they still logged in.</div>
                        <div><br>
                        </div>
                        <div>I have try by edit &#39;<span>session.cookie_lifetime</span>&#39;
                          in &#39;settings.php&#39;, but it doesn&#39;t work.</div>
                        <div><br>
                        </div>
                        <div>Thanks in advance for any ideas.</div>
                        <div>-- <br>
                          <div><b>Nam Pham</b></div>
                          <div>Phone: <a href="tel:%28%2B84%29%20932%20830%20330" value="+84932830330" target="_blank">(+84)
                              932 830 330</a><br>
                            Email: + <a href="mailto:nampham@mbm.vn" target="_blank">nampham@mbm.vn</a></div>
                          <div>           + <a href="mailto:allstarsmen@gmail.com" target="_blank">allstarsmen@gmail.com</a></div>
                          <div>Skype: nampham-mbm<br>
                          </div>
                          <div>Yahoo: allstars_men</div>
                          <br>
                        </div>
                      </div>
                    </div>
                  </blockquote>
                </div>
              </div>
            </div>
          </blockquote>
        </div>
        <br>
        <br clear="all">
        <div><br>
        </div>
        -- <br>
        <div><b>Nam Pham</b></div>
        <div>Phone: (+84) 932 830 330<br>
          Email: + <a href="mailto:nampham@mbm.vn" target="_blank">nampham@mbm.vn</a></div>
        <div>           + <a href="mailto:allstarsmen@gmail.com" target="_blank">allstarsmen@gmail.com</a></div>
        <div>Skype: nampham-mbm<br>
        </div>
        <div>Yahoo: allstars_men</div>
        <br>
      </div>
    </blockquote>
    <br>
    <br>
  </div></div></div>

</blockquote></div><br><br clear="all"><div><br></div>-- <br><div><b>Nam Pham</b></div><div>Phone: (+84) 932 830 330<br>Email: + <a href="mailto:nampham@mbm.vn" target="_blank">nampham@mbm.vn</a></div><div>           + <a href="mailto:allstarsmen@gmail.com" target="_blank">allstarsmen@gmail.com</a></div>
<div>Skype: nampham-mbm<br></div><div>Yahoo: allstars_men</div><br>
</div>