Description:
------------
After creating a MSSQL connection, any subsequent connections to MSSQL, whether persistant or otherwise, using the same server and login information, will override the original MSSQL connection. Using two different logins do not cause the problem.

This has been tested and found to occur in PHP 5.2.0 and 5.2.3 for Windows (Windows 2003 Server) as well as PHP 5.2.3 for Linux (a heavily customized v2.2.24).

This is very similar to Bug #17305.

Reproduce code:
---------------
$testquery = "SELECT EMAILADDRESS FROM adminmain WHERE ID = 1";

$conn1 = mssql_connect("localhost", "sa", "********");
mssql_select_db("generic", $conn1);

// First Query!
$result = mssql_query($testquery, $conn1);
$qarray = mssql_fetch_array($result);
echo("First Result: " . $qarray["EMAILADDRESS"] . "<br />");

$conn2 = mssql_connect("localhost", "sa", "********");
mssql_select_db("buymanitou", $conn2);

// Second Query!
// NOTE THAT THIS IS ON CONN1 AGAIN!
$result = mssql_query($testquery, $conn1);
$qarray = mssql_fetch_array($result);
echo("Second Result: " . $qarray["EMAILADDRESS"] . "<br />");

mssql_close($conn1);
mssql_close($conn2);


Expected result:
----------------
In my test case, I am grabbing an email address from the first administrator in the system from the first database connection. Since in my case, the first DB connection returns fakeemailaddress@something.net , I expect the following output:

First Result: fakeemailaddress@something.net
Second Result: fakeemailaddress@something.net


Actual result:
--------------
Because of the bug, the email address from the SECOND database is returned for the second query:

First Result: fakeemailaddress@something.net
Second Result: anotheraddress@somethingelse.com