Covert Entry: The Backdoor Electronic Revolution.

Fuente: ERIC Institute of Education Sciences

Saved in:

Bibliographic Details
Main Author:	Hoffmann, Preston
Format:	Recurso educativo Open Access
Language:	en
Published:	1992
Subjects:	Audiotape Recordings Childrens Literature Electronic Publishing Futures (of Society) Library Materials Library Role Publishing Industry Talking Books
Online Access:	Acceder al recurso
Tags:	Add Tag No Tags, Be the first to tag this record!

_version_	1867180953282019329
author	Hoffmann, Preston
author_facet	Hoffmann, Preston Hoffmann, Preston
collection	Education Resources Information Center
contents	Covert Entry: The Backdoor Electronic Revolution. Hoffmann, Preston Audiotape Recordings Childrens Literature Electronic Publishing Futures (of Society) Library Materials Library Role Publishing Industry Talking Books Discusses innovative approaches to producing audio versions of books, including publication of original manuscripts in audio form; the use of electronic music; children's books with built-in speakers; computer-assisted audio books; and an electronic short story magazine. The future of electronic books and the role of libraries are considered. (MES)
format	Recurso educativo Open Access
id	eric_EJ454741
institution	ERIC Institute of Education Sciences
language	en
publishDate	1992
record_format	eric
spellingShingle	Covert Entry: The Backdoor Electronic Revolution. Hoffmann, Preston Audiotape Recordings Childrens Literature Electronic Publishing Futures (of Society) Library Materials Library Role Publishing Industry Talking Books Covert Entry: The Backdoor Electronic Revolution. Hoffmann, Preston Audiotape Recordings Childrens Literature Electronic Publishing Futures (of Society) Library Materials Library Role Publishing Industry Talking Books Discusses innovative approaches to producing audio versions of books, including publication of original manuscripts in audio form; the use of electronic music; children's books with built-in speakers; computer-assisted audio books; and an electronic short story magazine. The future of electronic books and the role of libraries are considered. (MES)
title	Covert Entry: The Backdoor Electronic Revolution.
topic	Audiotape Recordings Childrens Literature Electronic Publishing Futures (of Society) Library Materials Library Role Publishing Industry Talking Books
url	https://eric.ed.gov/?id=EJ454741

if (filemtime($filename) + $maxlifetime < time()) { unlink($filename); $count++; } } return $count; } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ protected function saveSession($sessId, $data): bool { $sessFile = $this->path . '/sess_' . $sessId; if ($handle = fopen($sessFile, 'w')) { $return = false; // Lock the file for exclusive access to avoid issues with multiple // processes writing session simultaneously: if (flock($handle, LOCK_EX)) { $return = fwrite($handle, $data); // Make sure that there's no trailing data by truncating the file to // the correct length: ftruncate($handle, strlen($data)); fflush($handle); flock($handle, LOCK_UN); } fclose($handle); if ($return !== false) { return true; } } // If we got this far, something went wrong with the file output... // It is tempting to throw an exception here, but this code is called // outside of the context of exception handling, so all we can do is // echo a message.

// Anecdotal testing Today and Yesterday seems to indicate destroy() // is called by the garbage collector and everything is good. // Something to keep in mind though. return 0; } /** * Write function that is called when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ public function write($sessId, $data): bool { if ($this->writesDisabled) { return true; } return $this->saveSession($sessId, $data); } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ abstract protected function saveSession($sessId, $data): bool; }

* * @return void */ public function writeClose() { // The assumption is that we're using PHP's ext/session. // session_write_close() will actually overwrite $_SESSION with an // empty array on completion -- which leads to a mismatch between what // is in the storage object and $_SESSION. To get around this, we // temporarily reset $_SESSION to an array, and then re-link it to // the storage object. // // Additionally, while you _can_ write to $_SESSION following a // session_write_close() operation, no changes made to it will be // flushed to the session handler. As such, we now mark the storage // object isImmutable. $storage = $this->getStorage(); if (! $storage->isImmutable()) { $_SESSION = $storage->toArray(true); session_write_close(); $storage->fromArray($_SESSION); $storage->markImmutable(); } } /** * Attempt to set the session name * * If the session has already been started, or if the name provided fails * validation, an exception will be raised. * * @param string $name * @return SessionManager * @throws Exception\InvalidArgumentException */ public function setName($name) { if ($this->sessionExists()) { throw new Exception\InvalidArgumentException( 'Cannot set session name after a session has already started'

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