Persistent connection & many scripts ?

Hi all I use PHP to query a PostgreSQL database. Today I know how to query the database with a PHP script, but I have to establish a connection to the database in each script. Is there a way to get the following : connect.php : a script where the user enters its login and password, and connect to the DB by the submit button (submit button which action url is query.php). query.php : a script that performs a query using the connection from connect.php I know that I could send the login/password to the query.php to establish the connection ; but it is not what I would like (sometimes - often - the connection time is bigger than the query time itself !) Thanks for your help !