Haven't We Been Here Before? Children, Schools, Pornography, Intellectual Freedom, and the Internet.

Fuente: ERIC Institute of Education Sciences

Saved in:

Bibliographic Details
Main Author:	Barron, Daniel D.
Format:	Recurso educativo Open Access
Language:	en
Published:	1996
Subjects:	Censorship Communication (Thought Transfer) Community Involvement Computer Software Computer Uses in Education Information Policy Information Sources Intellectual Freedom Internet Learning Activities Pornography Problems
Online Access:	Acceder al recurso
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author	Barron, Daniel D.
author_facet	Barron, Daniel D. Barron, Daniel D.
collection	Education Resources Information Center
contents	Haven't We Been Here Before? Children, Schools, Pornography, Intellectual Freedom, and the Internet. Barron, Daniel D. Censorship Communication (Thought Transfer) Community Involvement Computer Software Computer Uses in Education Information Policy Information Sources Intellectual Freedom Internet Learning Activities Pornography Problems Discusses learning activities on the Internet, and the need to protect students from pornography while also providing for intellectual freedom. Notes the importance of developing a selection policy, involving the community in censorship versus selection discussions, and talking with children and their parents. Provides a list of Web sites for additional information and sources for blocking software. (AEF)
format	Recurso educativo Open Access
id	eric_EJ521780
institution	ERIC Institute of Education Sciences
language	en
publishDate	1996
record_format	eric
spellingShingle	Haven't We Been Here Before? Children, Schools, Pornography, Intellectual Freedom, and the Internet. Barron, Daniel D. Censorship Communication (Thought Transfer) Community Involvement Computer Software Computer Uses in Education Information Policy Information Sources Intellectual Freedom Internet Learning Activities Pornography Problems Haven't We Been Here Before? Children, Schools, Pornography, Intellectual Freedom, and the Internet. Barron, Daniel D. Censorship Communication (Thought Transfer) Community Involvement Computer Software Computer Uses in Education Information Policy Information Sources Intellectual Freedom Internet Learning Activities Pornography Problems Discusses learning activities on the Internet, and the need to protect students from pornography while also providing for intellectual freedom. Notes the importance of developing a selection policy, involving the community in censorship versus selection discussions, and talking with children and their parents. Provides a list of Web sites for additional information and sources for blocking software. (AEF)
title	Haven't We Been Here Before? Children, Schools, Pornography, Intellectual Freedom, and the Internet.
topic	Censorship Communication (Thought Transfer) Community Involvement Computer Software Computer Uses in Education Information Policy Information Sources Intellectual Freedom Internet Learning Activities Pornography Problems
url	https://eric.ed.gov/?id=EJ521780

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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