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Re: Having problems with user defined sessions using postgresql

From: Erik Jones <erik(at)myemma(dot)com>
To: Richmond(dot)Dyes(at)monroehosp(dot)org
Cc: pgsql-php(at)postgresql(dot)org
Subject: Re: Having problems with user defined sessions using postgresql
Date: 2006-09-14 15:10:43
Message-ID: 450970F3.1070507@myemma.com (view raw or flat)
Thread:
Lists: pgsql-php
Ok,

1.  PHPs postgres lib doesn't have a pg_error() function.  You want 
pg_last_error().
2.  Are you using the sid as li_session's primary key?  If so, before 
you create a new session with an already existing sid, you will need to 
delete the old sid entry before inserting a new one with the same sid.

Richmond Dyes wrote:
> I have written user defined session management library in php using 
> postgresql as my session repository.  When I let my session timeout on 
> my browser I get the below errors on my screen.
>
>    *Warning*: pg_query(): Query failed: ERROR: duplicate key violates 
> unique constraint "li_session_pkey" in 
> */var/www/html/liberty/includes/session.php* on line *31*
>
> *Fatal error*: Call to undefined function: pg_error() in 
> */var/www/html/liberty/includes/session.php* on line *31*
>
> *Warning*: Unknown(): A session is active. You cannot change the 
> session module's ini settings at this time. in *Unknown* on line *0
>
> The problem is in the write function of my library. Here it is:
>
> function pg_session_write($sid, $val) {
>     $life = get_cfg_var("session.gc_maxlifetime");
>     $exp = time() + $life;
>     $selQ = "SELECT sidid FROM li_session
>     WHERE sidid = '$sid' AND exptime >". time();
>     $selR= pg_query($selQ)or die("It didn't work:". pg_error());
>      if(pg_num_rows($selR)) {
>         $sesupQ ="UPDATE li_session SET
>         exptime = '$exp', vidval = '$val'
>         WHERE
>         sidid = '$sid' and exptime >". time();
>         $sesupR=pg_query($sesupQ) or die("It didn't work:". pg_error());
>     } else {
>      $sesinQ = "INSERT INTO li_session
>     VALUES('$sid', '$val', '$exp')";
>     $sesinR= pg_query($sesinQ) or die("It didn't work:". pg_error());   
>     }
> }
> * 


-- 
erik jones <erik(at)myemma(dot)com>
software development
emma(r)


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