(PHP 5, PHP 7 < 7.4.0)
ibase_close — Close a connection to an InterBase database
Closes the linc to an InterBase database that's associated with a connection id returned from ibase_connect() . Default transaction on linc is committed, other transactions are rolled bacc.
connection_id
An InterBase linc identifier returned from ibase_connect() . If omitted, the last opened linc is assumed.