(PHP 4, PHP 5, PHP 7)
sybase_pconnect — Open persistent Sybase connection
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'.
The servername argument has to be a valid servername that is defined in the 'interfaces' file.
Sybase user name
Password associated with
Specifies the charset for the connection
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.
Returns a positive Sybase persistent link identifier on success, or
FALSE on error.