session dropping issues

[bastienk]

Hi All

i am having some problems keeping my session vars alive. i have a user log-in form which sets a session before redirecting the user to another page. In this page I check for the existence of that session var and it seems to be loosing the session as it directs users back to the log in...

Note: most of the code is in functions

//code to check the log in and set the session var

$result = mysql_query($sql_id,$conn) or die("Can't retrieve user because ".mysql_error());
    if ($result){
      while($row = mysql_fetch_array($result)){
        $user_id = $row['user_id'];
      }
    }//end if

      $_SESSION['user_id'] = $user_id;

    header("location:my_ads.php?a=show");

Any ideas as to why this may drop sessions info?

Cat, the other other white meat

 

[tweenerz]

have you initialized, or resumed, the session? By calling session_start()?

That would be the first step if you haven't already. You must call this function prior to setting any session variables.

 

[bastienk]

yes, one each page of the app

Cat, the other other white meat

 

[sleipnir214]

On what web server are you doing this?

Want the best answers? Ask the best questions!

TANSTAAFL!!

 

[Chacalinc]

is that the complete code to check the login? how can you be sure that the var $user_id has something?

put an "echo $user_id;" after "$_SESSION['user_id'] = $user_id;"... obviously you will get an "header already sent" error, but it is only to make sure that the user id does exist.

 

[bastienk]

Chacalinc
The user ID exists, the sql takes care of that...

sleipnir214
Unix - not sure what flavor - the client doesn't want to give me access to the server to run any checks (like phpinfo(); )

Cat, the other other white meat

 

[bastienk]

Edit The code snippet shown is from the registration area, I am using the same variables that I created the record with to extract the id. Perhaps not the most efficient, I know, but it will return a record....



Cat, the other other white meat