Re: database hell

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On 7/12/12, Adam Nicholls <Adam.Nicholls@xxxxxxxx> wrote:
>
>
>> -----Original Message-----
>> From: Nick Edwards [mailto:nick.z.edwards@xxxxxxxxx]
>> Sent: 12 July 2012 12:30
>> To: php-general@xxxxxxxxxxxxx
>> Subject:  database hell
>>
>> Hi
>>
>> We have a program that manages users, throughout all database calls
>>
>> created as:
>> $connect = mysql_connect($db_host--other variables);
>> mysql_query("Delete from clients where id=$User");
>>
>> All this works good, but, we need, in the delete function to delete from
>> another database
>>
>> $connmy=mysql_connect("host","user","pass");
>>                     mysql_select_db("vsq",$connmy);
>>                     mysql_query("DELETE from userprefs where
>> clientr='$User'");
>> $mysql_close($connmy); this fails, unless we use a mysql_close prior to
>> it,
>> and then reconnect to original database after we run this delete, how can
>> we
>> get around this without closing and reopening?
>> We have a  perl script doing similar for manual runs, and it works well
>> knowing that $connmy is not $connect, I'm sure there is a simple way to
>> tell
>> php but  I'm darned if I can see it.
>>
>> Thanks
>> Niki
>>
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>
>
> Just create a new resource/connection to MySQL and pass the identifier into
> mysql_query().
> You'll also want to use mysql_real_escape_string() by the looks of it to
> attempt to stop SQL injection.
>
>
> Something like this will do it:
>
> $db1 = mysql_connect($host,$user,$pass);
> $db2 = mysql_connect($host,$user,$pass);
>
> mysql_select_db('db1',$db1);
> mysql_select_db('db2',$db2);
>
> // do your queries with $DB1
>
> $result = mysql_query("delete from userprefs where
> clientr=".mysql_real_escape_string($user,$db1)."", $db1);
>
> // do your queries again with $DB1
>
> mysql_close($db1);//close db1
> mysql_close($db2);//close db2
>


We can not immediately close db2?  if we do it seems to close all connections?

Thanks

>
> Cheers
> Adam.
>
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