streamWrapper::stream_flush()

(PHP 4 >= 4.3.2, PHP 5, PHP 7)

Flushes the output

说明

publicstreamWrapper::stream_flush(void): bool

This method is called in response tofflush()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.

此函数没有参数。

Should returnTRUEif the cached data was successfully stored (or if there was no data to store),orFALSEif the data could not be stored.

Note:
If not implemented,FALSEis assumed as the return value.