streamWrapper::stream_flush
(PHP 4 >= 4.3.2, PHP 5, PHP 7, PHP 8)
streamWrapper::stream_flush — Flushes the output
Description
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
This function has no 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,
falseis assumed as the return value.
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