Close Postgresql Database Connection Problem !

Hi ! There are some confusion for me. Could you help me ? Suppose I write a program by php and connect the postgresql database through web page. If I use the providing API from PHP connect to postgresql database, like that pg_connect(); ==> $connection = pg_connect("$constr user='$USER' password='$PW'"); Actually It should be closed the connection after access finished, like that pg_close(); ==> pg_close($connection); But if the user force to close the web page that means have not close the connection. I want to ask the connection will be closed by Apache Server automatic ? or when user closed the web page the connection will be closed at the same time ? If the connection have not been closed automatic. So the Apache Server will keep the connect port forever ? Actually the connection port handle by Apache Server or PHP ? Details: ================= PHP 4.0.3pl1 PostgresSQL 7.0.3 Apache Server 1.3.14 Linux Redhat 6.2 Regard's