This function is EXPERIMENTAL. The behaviour of this function, the name of this function, and anything else documented about this function may change without notice in a future release of PHP. Use this function at your own risk.
This function clears the error code on the given socket or the global last socket error.
This function allows explicitely resetting the error code value either of a socket or of the extension global last error code. This may be useful to detect within a part of the application if an error occured or not.