query about mysql and PHP

[KFC]

I have some questions about PHP and mysql

1) As the doc tells, the mysql_pconnect will connect to the db once and cannot be released with mysql_close. I am wondering when will the this connection be closed()?

2) Can I do mysql_pconnect when a session being started. Now, I do the pconnect everytime I perform an sql-query

3) I got so many users visiting my webpage and each one will query the database. In my db codes, I use pconnect to establish a constant connection. I am not sure if every user has an unique constant connection to query the database or all users share the same connection. If the former is true, should I use mysql_connect and mysql_close instead

Thanks in advance.

[planetsim]

First, when connecting, the function would first try to find a (persistent) link that's already open with the same host, username and password. If one is found, an identifier for it will be returned instead of opening a new connection.

From what I gather if there is a connection it will be more than likely shared. So Only call the mysql_pconnect once during the script execution, same applies with mysql_connect the difference is that even if you use mysql_pconnect once during the script if there isnt an established connection it will connect if you have script 2 and script1 already connected it will try and re-establish that connection instead of opening a new one.

mysql_connect on the other hand must always connect in each script since after script execution the link will be dead its always suggested that mysql_close is still used to make sure tha connection is dead incase after script execution it doesnt.