streamWrapper::stream_flush
PHP function
Edit on GitHub ✎
(PHP 4 >= 4.3.2, PHP 5, PHP 7, PHP 8)
Flushes the output
Description
streamWrapper::stream_flush(): bool
This method is called in response to fflush() and when the stream is being closed while any unflushed data has been written to it before.
If you have cached data in your stream but not yet stored it into the underlying storage, you should do so now.
Parameters Parameters
Return Values
Should return true if the cached data was successfully stored (or if there was no data to store), or false if the data could not be stored.
Notes
Note
If not implemented, false is assumed as the return value.