I agree.
hey.
for my $0.02 worth.. these kinds of questions are not exactly only php.
however, i still see them as being valuable, and belonging to the php
list,
as they get into areas the php developers of sites might grapple with. i'm
of the opinion more, rather than less.
so if you have more intelligent discussions regarding php/site development
technologies that integrate with php, this is the place for it!!
peace..
-----Original Message-----
From: Stut [mailto:stuttle@xxxxxxxxx]
Sent: Monday, February 05, 2007 5:31 AM
To: benifactor
Cc: php-general@xxxxxxxxxxxxx
Subject: Re: who is online?
benifactor wrote:
sorry if you misunderstood, i just wanted to know if it could be done
with php alone.
It can't, and this should be fairly obvious. If the client-side makes no
contact with the server for a period of time, how do you expect it to
know that the user hasn't moved to another page?
The bottom line is that this needs some client-side code to work,
whether it be Javascript or just an iframe with a meta refresh tag.
-Stut
----- Original Message ----- From: "Stut" <stuttle@xxxxxxxxx>
To: "benifactor" <snorris17@xxxxxxx>
Cc: <php-general@xxxxxxxxxxxxx>
Sent: Monday, February 05, 2007 5:18 AM
Subject: Re: who is online?
benifactor wrote:
i have built a function to tell me how many users are on my site at
any given time... <?
//define function
function bc_who ($who, $location) {
//first we erase any expired entries //entries will expire after 5
mins $whoTime = time(); $whoTime = $whoTime - 300;
mysql_query("Delete FROM bc_who where expire < $whoTime") or
die(mysql_error());
//here we difine the variables needed to preform the check $whoExpire
= time(); $whoIp = "$_SERVER[REMOTE_ADDR]";
//this will be changed as soon as user registration is finished
$whoUser= "Guest"; //do the actual mysql queries
mysql_query("Delete FROM bc_who where '$whoIp' = ip");
mysql_query("Insert INTO bc_who (id, user, ip, location, expire,
status) VALUES (NULL, '$whoUser', '$whoIp', '$location',
'$whoExpire', '$whoStatus')");
}
//end who is function
?>
this fuction works fine, however, i want to know if what i am about
to ask is possible.
the problem i have is, this function assumes that after five minutes
if the user has not refreshed the page, or gone onto another page the
user must be gone. in reality, i have pages users might be on for an
hour or so without refreshing. i want my whos online to as acurate as
possible so is there a way to do this on the fly? like, forgetting
about the expire time and using a server side peice of code to
communicate to the database, when there is no more communication the
entry is deleted? please tell me there is a way, thank you in
advance.
Assuming you actually mean "client side" not "server side" (because
server-side is what you already have), you could do this in a number
of ways with Javascript. You could periodically call the server using
XmlHttpRequest, or you could keep it simple and reload an image which
points at a PHP script. Either way this is not a question for a PHP
list because it relates to client-side code. Google will almost
certainly have several useful sites.
-Stut
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