An Alerting Service Bibliography on Libraries and Media. Number Two.

Fuente: ERIC Institute of Education Sciences

Saved in:

Bibliographic Details
Format:	Recurso educativo Open Access
Language:	en
Published:	1975
Subjects:	Annotated Bibliographies Educational Technology Information Science Libraries Library Research Media Research
Online Access:	Acceder al recurso
Tags:	Add Tag No Tags, Be the first to tag this record!

_version_	1867181238722232320
collection	Education Resources Information Center
contents	An Alerting Service Bibliography on Libraries and Media. Number Two. Annotated Bibliographies Educational Technology Information Science Libraries Library Research Media Research Books sent to the ERIC Clearinghouse at Stanford which are not applicable for inclusion in Resources in Education, but are of general interest to those in the media/technology and library/information science field, are listed and described. All entries deal with libraries and media, but do not necessarily stress educational aspects. Books are classified by topic. An elementary classified index is included. (SK)
format	Recurso educativo Open Access
id	eric_ED104372
institution	ERIC Institute of Education Sciences
language	en
publishDate	1975
record_format	eric
spellingShingle	An Alerting Service Bibliography on Libraries and Media. Number Two. Annotated Bibliographies Educational Technology Information Science Libraries Library Research Media Research An Alerting Service Bibliography on Libraries and Media. Number Two. Annotated Bibliographies Educational Technology Information Science Libraries Library Research Media Research Books sent to the ERIC Clearinghouse at Stanford which are not applicable for inclusion in Resources in Education, but are of general interest to those in the media/technology and library/information science field, are listed and described. All entries deal with libraries and media, but do not necessarily stress educational aspects. Books are classified by topic. An elementary classified index is included. (SK)
title	An Alerting Service Bibliography on Libraries and Media. Number Two.
topic	Annotated Bibliographies Educational Technology Information Science Libraries Library Research Media Research
url	https://eric.ed.gov/?id=ED104372

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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