sybase_pconnect
(PHP 4, PHP 5)
sybase_pconnect — Open persistent Sybase connection
Description
sybase_pconnect() acts very much like sybase_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 (sybase_close() will not close links established by sybase_pconnect()).
This type of links is therefore called 'persistent'.
Parameters
- servername
-
The servername argument has to be a valid servername that is defined in the 'interfaces' file.
- username
-
Sybase user name
- password
-
Password associated with username.
- charset
-
Specifies the charset for the connection
- appname
-
Specifies an appname for the Sybase connection. This allow you to make separate connections in the same script to the same database. This may come handy when you have started a transaction in your current connection, and you need to be able to do a separate query which cannot be performed inside this transaction.
Return Values
Returns a positive Sybase persistent link identifier on success, or FALSE on error.
Changelog
| Version | Description |
|---|---|
| 4.2.0 | The appname parameter was added. |
| 4.0.2 | The charset parameter was added. |