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Re: User login status? [message #174553 is a reply to message #174546]

Fri, 17 June 2011 18:53

Luuk
Messages: 329
Registered: September 2010

Karma:

Senior Member

On 17-06-2011 13:25, Co wrote:
> On 15 jun, 20:33, Luuk <L...@invalid.lan> wrote:
>> On 15-06-2011 00:57, Jerry Stuckle wrote:
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>> On 6/14/2011 4:22 PM, Co wrote:
>>>> Hi All,
>>
>>>> I have this code that will change one field of the users record when
>>>> he logs in:
>>
>>>> mysql_query("UPDATE myMembers SET last_log_date=now(), logged='1'
>>>> WHERE id='$id' LIMIT 1");
>>
>>>> This way we can display all the users who are logged in on the main
>>>> page.
>>>> When the user logs of the record will be changed again:
>>
>>>> mysql_query("UPDATE myMembers SET logged='0' WHERE id='$id' LIMIT 1");
>>
>>>> However what if the user just forgets to log off, then he is gone but
>>>> his status is still logged=1.
>>>> Is there a way to make sure the user status is changed even when he
>>>> forgets to log off?
>>
>>>> Marco
>>
>>> The web is stateless - there is no such concept as "logged in" or not.
>>> And there is no way to know if the user is still reading your page, has
>>> gone to coffee (or lunch), closed the browser or even shut off the
>>> computer. So there is no way to determine how many people are logged in
>>> or not - and sites which claim to do that are pretty much guessing.
>>
>>> The best you can do is create your own custom session handler which
>>> stores the data in a database instead of the file system. Then you can
>>> assume as long as the session is active, the user is logged in. When
>>> the session expires, the user is logged out. Still not real accurate,
>>> but the best you can do.
>>
>>> Just a warning - custom session handlers can be complex and pretty much
>>> beyond what you can do in a newsgroup.
>>
>>> Otherwise, Luuk's response is as good as any. And it will be about as
>>> accurate as anything. You need a cron job to handle the deletion of rows.
>>
>> You could also check if users are still logged on, just before gathering
>> the list of logged on users...
>> (and when someone logs in)
>>
>> This way your database will not give the correct 'state' to you, but to
>> the web-users it will, because you put all the changes in there before
>> you show anything to the web-users...
>>
>> --
>> Luuk
>
> Luuk,
>
> I like the idea but I don't know exactly how to check if users are
> still logged in?
>
> Marco

i meant to logg the user off when they have not clicked for a defined
number of minutes (after 10, or 15 minutes, or so....)

--
Luuk

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[Message index]

		User login status? By: Co on Tue, 14 June 2011 20:22
		Re: User login status? By: Luuk on Tue, 14 June 2011 20:57
		Re: User login status? By: Luuk on Tue, 14 June 2011 21:00
		Re: User login status? By: Co on Tue, 14 June 2011 21:09
		Re: User login status? By: Jerry Stuckle on Tue, 14 June 2011 22:57
		Re: User login status? By: Co on Wed, 15 June 2011 05:02
		Re: User login status? By: Jerry Stuckle on Wed, 15 June 2011 10:02
		Re: User login status? By: Luuk on Wed, 15 June 2011 18:33
		Re: User login status? By: Co on Fri, 17 June 2011 11:25
		Re: User login status? By: Luuk on Fri, 17 June 2011 18:53
		Re: User login status? By: me on Fri, 17 June 2011 19:13
		Re: User login status? By: Luuk on Fri, 17 June 2011 20:06
		Re: User login status? By: me on Fri, 17 June 2011 20:39
		Re: User login status? By: Jerry Stuckle on Fri, 17 June 2011 20:47
		Re: User login status? By: me on Fri, 17 June 2011 21:07
		Re: User login status? By: Tim Streater on Fri, 17 June 2011 21:47
		Re: User login status? By: Jerry Stuckle on Sat, 18 June 2011 00:25
		Re: User login status? By: me on Sat, 18 June 2011 04:15
		Re: User login status? By: Luuk on Sat, 18 June 2011 11:37
		Re: User login status? By: me on Sat, 18 June 2011 15:46

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