Re: Getting database name from link identifier

On Tue, Feb 25, 2014 at 4:59 PM, Larry Martell <larry.martell@gmail.com>wrote: > On Tue, Feb 25, 2014 at 4:53 PM, Aziz Saleh <azizsaleh@gmail.com> wrote: > > On Tue, Feb 25, 2014 at 4:47 PM, Larry Martell <larry.martell@gmail.com> > > wrote: > >> On Tue, Feb 25, 2014 at 4:41 PM, Aziz Saleh <azizsaleh@gmail.com> > wrote: > >> > On Tue, Feb 25, 2014 at 4:28 PM, Larry Martell < > larry.martell@gmail.com> > >> > wrote: > >> >> > >> >> Is there any way to find out what database I am connected to from a > >> >> link identifier? > >> >> > >> >> I have some code this does this: > >> >> > >> >> @ $db = mysql_pconnect($dbserver, $dbuser, $dbpass); > >> >> @ mysql_select_db($dbname, $db); > >> >> > >> >> I know at the time this is executed $dbname is what I want it to be. > >> >> But later on when I pull data using $db, I get data from a different > >> >> database. If I try to echo $db at the time of the query I get > >> >> "Resource id #5". Can I get the database name from $db? > >> > You won't be able to, you will need to execute a query on that DB > >> > connection > >> > handler to check the DB name currently used: > >> > > >> > SELECT DATABASE() as DB_NAME > >> > >> Thanks! Indeed I am not 'using' the db that $dbname is set to when I > >> execute the mysql_select_db command. Now I just have to figure out why > >> that is. > > > > > > Are you making a call to mysql_select_db besides the above during your > code > > execution (even on a different DB handler)? If yes, then that would be > the > > issue since. > > I was simplifying the code for purposes of asking the question. > Actually the app connects to 23 different databases on different > servers. The link identifiers are stored in an array. Each > mysql_select_db is called with a different link identifiers. I am > echoing out the link identifiers and the array index when I create > them and also when I use them. I see that the index is the same, the > resource id # is the same, but I'm connected to a different db then > the one I called mysql_select_db with. > Is it safe to assume that that all of those 23 connections have different host/user/password combination? I ran into issues before, where changing the database using the mysql_select_db function changed the db for the connection for all users who are sharing that connection - PHP was running as apache module and not cgi. I ended up using mysql_connect with the third param as true to force a new connection. Aziz