[PHP] Re: who's on-line application - php
Hello, usually you can not determine clearly who is online on your website at the moment because http is a session-less protocol (thus php implements a session mechanism through cookies or session id). However you can use the following approach: - add a 'last_seen' field to the users table of your website - update that field for the user everytime he calls a page on your site (e.g. include(updatels.php); on every page) - to get the number of (probably still) online users do a 'select from user_table where now()-lastseen 3 minutes' another method would be changing the session handler to store session data in the database and query the sessiontable appropriately. best regards, Stefan Dengscherz On Mon, Feb 14, 2005 at 04:30:32PM +0200, Jacques wrote: I would like to indicate the particulars (from a MySQL database) of all those users that are currently on-line (those whom have successfully signed in). How should I go about achieving this? Does it have something to do with Sessions? I am developing in PHP. Regards Jacques -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Re: Users logins in Linux machine
Hello, changing the system password requires root privileges, because it needs to modify the /etc/shadow file. Thus either I would put the password change requests into a mysql table or text file and run a cronjob as root which checks e.g. every 15 minutes if there are new pw change requests. If there are new ones, an expect (tool to control interactive programs) script gets executed by root which changes the system password depending on the request. However this method could be insecure depending on the setup of your scripts. Another approach would be letting the users change their system passwords by setting their shell to /usr/bin/passwd, so they only get the change password prompt when they login to the server with their account. This would also send the new password over a secured connection (implies using ssh to login). I don't know if there are any big security risks by setting the shell to passwd. Correct me if I am wrong :) best regards, Stefan Dengscherz On Sat, Feb 12, 2005 at 04:24:57PM +, Bruno Santos wrote: Hello all. I've a linux server that runs a mailserver for several users. I want to build a page where users can change their email password, that's their accounts password. how can i with PHP manage to compare the password they type in a web form with the one they have in the system ?? (/etc/passwd) ?? can it be with LDAP ? or PAM ? or any other method ? cheers ! Bruno Santos -- Say no to software patents www.nosoftwarepatents.com/ -- [EMAIL PROTECTED] -- Divisao de Informatica [EMAIL PROTECTED] Tel: +351 272 000 155 Fax: +351 272 000 257 -- Hospital Amato Lusitano [EMAIL PROTECTED] Tel: +351 272 000 272 Fax: +351 272 000 257 -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Quick imageSize question
Hello, that's usually not possible because your webserver can't access the image on your computer; a possible solution might be to determine the image size via javascript and submit it with the form, so you can accept or deny the image upload in your php script - problem: with javascript running on client side, this is not foolproof. Anyways i don't know exactly how to solve it with javascript even, so please correct me, if i'm talking crap here. Best regards, -sd On Wed, Oct 13, 2004 at 07:37:29AM -0700, Mag wrote: The problem with the above is I can only get the dimensions AFTER the file has been uploaded and is on disk,which is quite a pain in the ... coz I want to accept only images that are smaller than x pixels width and then i have to tell the client that their upload failed coz their image is too big...is there any way to get the dimensions before the upload is done? -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] preg_replace problem
Hello, ?php $parsed = preg_replace(/(\ba\b)/i,tag\\1/tag,$sourcestring); ? should do the job. regards Am Die, 2003-06-17 um 13.25 schrieb Vincent Bouret: Hi, I am having this problem with preg_replace. I want the following thing but I can't understand what regular expression I should put. I want to replace all occurences of a given **whole** word into a string. For example: I want A dog jumped over a ladder to become xyzA/xyz dog jumped over xyza/xyz ladder. I **don't** want: A dog jumped over a ladder to become xyzA/xyz dog jumped over xyza/xyz lxyza/xyzdder. You understand what I mean? I can't do that will str_replace, but I know it would be quite easy with preg_replace. Can someone help me? Thanks Vincent -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Re: php editor?
Hi James, Quanta has built in syntax highlighting for PHP; i have made a small screenshot: http://www.chowned.us/sd/quanta-php.png regards Am Mon, 2003-06-16 um 17.49 schrieb James Hatridge: Hi John et al,, On Sunday 15 June 2003 02:09, John Nichel wrote: Linux I use Quanta. Do you know how (or if) to get Quanta to color code PHP like it does html? If I could get that then Quanta would be almost perfit. Thanks JIM -- Jim Hatridge Linux User #88484 -- BayerWulf Linux System # 129656 The Recycled Beowulf Project Looking for throw-away or obsolete computers and parts to recycle into a Linux super computer -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] HTML...
Hello,
select name='email_recipients' size='6' multiple
change this to select name='email_recipients[]' ...
you can then easily access the multiple selections by walking the array:
for ($i=0;$isizeof($email_recipients);$i++)
{
echo $email_recipients[$i];
echo br /;
}
regards
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