oci_register_taf_callback

oci_register_taf_callback

Register a user-defined callback function for Oracle Database TAF

bool **oci_register_taf_callback** resource $connection  $callback

Registers a user-defined callback function to . If fails due to instance or network failure, the registered callback function will be invoked for several times during failover. See for information. connection``connectionOCI8 Transparent Application Failover (TAF) Support

When is called multiple times, each registration overwrites the previous one. oci_register_taf_callback

Use to explicitly unregister a user-defined callback. oci_unregister_taf_callback

TAF callback registration will NOT be saved across persistent connections, therefore the callback needs to be re-registered for a new persistent connection.

connectionAn Oracle connection identifier.

callbackA user-defined callback to register for Oracle TAF. It can be a string of the function name or a Closure (anonymous function).

The interface of a TAF user-defined callback function is as follows:

int **userCallbackFn** resource $connection int $event int $type

   See the parameter description and an example on  page.
  OCI8 Transparent Application Failover (TAF) Support

return.success

oci_unregister_taf_callback