Returns: A positive MS SQL persistent link identifier on
success, or FALSE on
error.
mssql_pconnect() acts very much
like mssql_connect() with two major
differences.
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.
Second, the connection to the SQL server will not be
closed when the execution of the script ends. Instead, the
link will remain open for future use (mssql_close() will not close links
established by mssql_pconnect()).
This type of links is therefore called 'persistent'.