www.gusucode.com > Elgg PHP开源SNS系统 V1.12.5源码程序 > elgg-1.12.5/vendor/knplabs/gaufrette/src/Gaufrette/Stream.php
<?php namespace Gaufrette; /** * Interface for the file streams * * @author Antoine Hérault <antoine.herault@gmail.com> */ interface Stream { /** * Opens the stream in the specified mode * * @param StreamMode $mode * * @return Boolean TRUE on success or FALSE on failure */ public function open(StreamMode $mode); /** * Reads the specified number of bytes from the current position * * If the current position is the end-of-file, you must return an empty * string. * * @param integer $count The number of bytes * * @return string */ public function read($count); /** * Writes the specified data * * Don't forget to update the current position of the stream by number of * bytes that were successfully written. * * @param string $data * * @return integer The number of bytes that were successfully written */ public function write($data); /** * Closes the stream * * It must free all the resources. If there is any data to flush, you * should do so * * @return void */ public function close(); /** * Flushes the output * * If you have cached data that is not yet stored into the underlying * storage, you should do so now * * @return Boolean TRUE on success or FALSE on failure */ public function flush(); /** * Seeks to the specified offset * * @param integer $offset * @param integer $whence * * @return Boolean */ public function seek($offset, $whence = SEEK_SET); /** * Returns the current position * * @return integer */ public function tell(); /** * Indicates whether the current position is the end-of-file * * @return Boolean */ public function eof(); /** * Gathers statistics of the stream * * @return array */ public function stat(); /** * Retrieve the underlying resource * * @param integer $castAs * @return mixed using resource or false */ public function cast($castAs); /** * Delete a file * * @return Boolean TRUE on success FALSE otherwise */ public function unlink(); }