(PHP 5 >= 5.3.0)
streamWrapper::stream_set_option — Change stream options
$option
   , int $arg1
   , int $arg2
   )This method is called to set options on the stream.
optionOne of:
STREAM_OPTION_BLOCKING (The method was called in response to stream_set_blocking())STREAM_OPTION_READ_TIMEOUT (The method was called in response to stream_set_timeout())STREAM_OPTION_WRITE_BUFFER (The method was called in response to  stream_set_write_buffer())arg1
       If option is
       
STREAM_OPTION_BLOCKING: requested blocking mode (1 meaning block 0 not blocking).STREAM_OPTION_READ_TIMEOUT: the timeout in seconds.STREAM_OPTION_WRITE_BUFFER: buffer mode (STREAM_BUFFER_NONE or STREAM_BUFFER_FULL).arg2
       If option is
       
STREAM_OPTION_BLOCKING: This option is not set.STREAM_OPTION_READ_TIMEOUT: the timeout in microseconds.STREAM_OPTION_WRITE_BUFFER: the requested buffer size.
   Returns TRUE on success or FALSE on failure.
   If option is not implemented, FALSE should be
   returned.