How to connect to multiple databases in a single PHP page? [duplicate]

Answer 1

You need to store the resource returned from mysql_connect and use it when doing mysql_select_db.

$res1 = mysql_pconnect(...);
mysql_select_db("Test", $res1);

$res2 = mysql_pconnect(...);
mysql_select_db("Test", $res2);

Then use $res1 or $res2 when querying the corresponding db.

mysql_query("select * from test_table", $res1);

mysql_query("select * from test_table", $res2);