(no version information, might be only in CVS)
db2_pconnect -- Returns a persistent connection to a database警告 |
この関数は、 実験的なステータスにあります。これは、この関数の 動作、関数名、ここで書かれていること全てがPHPの将来のバージョンで予告 なく変更される可能性があることを意味します。注意を喚起するとともに自分 のリスクでこの関数を使用してください。 |
Returns a persistent connection to an IBM DB2 Universal Database, IBM Cloudscape, or Apache Derby database. For more information on persistent connections, refer to 第41章.
Calling db2_close() on a persistent connection always returns TRUE, but the underlying DB2 client connection remains open and waiting to serve the next matching db2_pconnect() request.
Note that you are strongly urged to only use persistent connections on connections with autocommit turned on. If you attempt to combine transactions with persistent connections, issuing db2_commit() or db2_rollback() against a persistent connection will affect every persistent connection that is currently using the same underlying DB2 client connection. You may also rapidly experience locking escalation if you do not use autocommit for your persistent connections.
The database alias in the DB2 client catalog.
The username with which you are connecting to the database.
The password with which you are connecting to the database.
An associative array of connection options that affect the behavior of the connection, where valid array keys include:
Passing the DB2_AUTOCOMMIT_ON value turns autocommit on for this connection handle.
Passing the DB2_AUTOCOMMIT_OFF value turns autocommit off for this connection handle.
Returns a connection handle resource if the connection attempt is successful. db2_pconnect() tries to reuse an existing connection resource that exactly matches the database, username, and password parameters. If the connection attempt fails, db2_pconnect() returns FALSE.