Establishes a persistent connection to a CUBRID server.
cubrid_pconnect acts very much like cubrid_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, port, dbname and userid. 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 (cubrid_close or cubrid_disconnect will not close links established by cubrid_pconnect).
This type of link is therefore called 'persistent'.
Host name or IP address of CUBRID CAS server.
Port number of CUBRID CAS server (BROKER_PORT configured in $CUBRID/conf/cubrid_broker.conf).
Name of database.
User name for the database.
Connection identifier, when process is successful, or false on failure.