(PHP 4 >= 4.3.2, PHP 5)
streamWrapper::stream_read — Read from stream
This method is called in response to fread() and fgets().
Note: Remember to update the read/write position of the stream (by the number of bytes that were successfully read).
How many bytes of data from the current position should be returned.
If there are less than count bytes available, return as many as are available. If no more data is available, return either FALSE or an empty string.
이 메쏘드 호출을 실패했을 때 E_WARNING이 발생합니다. (즉, 구현되지 않음)
Note: If the return value is longer then count an E_WARNING error will be emitted, and excess data will be lost.
Note: streamWrapper::stream_eof is called directly after calling streamWrapper::stream_read to check if EOF has been reached. If not implemented, EOF is assumed.