Output using
fwrite()
is normally buffered at 8K. This means that if there are two
processes wanting to write to the same output stream (a file),
each is paused after 8K of data to allow the other to write.
stream_set_write_buffer()
sets the buffering for write operations on the given
filepointer
stream
to
buffer
bytes. If
buffer
is 0 then write operations are unbuffered. This ensures that
all writes with
fwrite()
are completed before other processes are allowed to write to
that output stream.
The function returns 0 on success, or EOF if the
request cannot be honored.
The following example demonstrates how to use
stream_set_write_buffer()
to create an unbuffered stream.