# oci_unregister_taf_callback

(PHP 7.0 >= 7.0.23, PHP 7 >= 7.1.9, PHP 7.2, PECL OCI8 >= 2.1.7)

oci_unregister_taf_callback — Unregister a user-defined callback function for Oracle Database TAF

### 说明

oci_unregister_taf_callback ( resource `$connection` ) : bool

Unregister the user-defined callback function registered to `connection` by oci_register_taf_callback(). See OCI8 Transparent Application Failover (TAF) Support for information.

### 参数

`connection`

  An Oracle connection identifier.

### 返回值

成功时返回 `TRUE`， 或者在失败时返回 `FALSE`。

### 参见

- oci_register_taf_callback() - Register a user-defined callback function for Oracle Database TAF