alejandro52

no . will notepad work?

IF i don't fix the error will there be any problems on my web page besides showing the warning?

no i don;t print anything.

from what i see there is nothing. I tried everything, putting space and removing it pressing backspace and all.

I keep having the same problem when i run my script on the server. the error is Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home/alliapop/public_html/ekloges2010/ekloges2010/eisagogi.php:1) in /home/alliapop/public_html/ekloges2010/ekloges2010/includes/session.php on line 1 I know i have to put session start at he very first line and i did but the problem keeps showing up. What else should i check?

i divide two number but the result is something like 4,5555555. I want to show the two tenths after the , and to round it up so the result to look like 4,56. What is the function to do that? I know it's preaty easy.

what does the # symbol do in php(e.x index.php?cat=1#privacy)? How can i use it? From what i 've seen you use it for changing a whole div without reloading the page like tabs..

Yes, i know how to use session start and i know how to use just sessions without cookies. My main problem is how am i goiing to restore the session when the user comes back to my web page. Should i store the session name in a cookie and also in a table in my database and check if they match? or should i check if the users ip is the same with that on the cookie?What is the best practice when you want to restore a session after the browser is closed and reopoened?

So step by step what i'm going to do: user types in username and password. with the php post method i check if they are correct. If they are i set the user id and username in the session. I also set the users ip inside a cookie. Now when the user closes the browser the session is destroyed. When the user reopens the browser and comes back to the web page i check to see if the user ip is the same as the user that came back. If it is i set once again in the session the usename and user_id. Is that correct? BTW how come php remebers my username even if my ip has changed?

right, the user ip, forgot about that. Whats a token?

Thanks for the reply, you got me kind of covered. But if i use session, when the browses closes so does the session. How am i supposed to restore the session when the user reopens the browser. If i store the session id inside a cookie whould that be ok(is it true that firefox does that automaticaly unlike iexplorer)? And how am i supposed to prevent another user from stealing the session id.

So for example, if i have a web site where user can log in and post stuff like php freaks, if a use session, when the browser closes the session is destroyed. If i use cookie it will remember the user. But wouldn't it be a safety risk?

What is the best practice to use cookies and sessions? Should i create a cookie and keep inside the cookie the name of the username the user has logged in or a session? How am i supposed to compine theese two? Is there any example or a tutorial on this? For example how does php freaks sessions and cookies work.

I have a query that displays some results. What i want is when i click a button to change my query sort order. how do i do that?

Ok, everything fixed. I forgot to close one div tag. So i guess firefox bybass the problem and fixes it but iexplorer won't do that.