Social Science Reference and U.S. Government Information on CD-ROM: Depository Titles.

Fuente: ERIC Institute of Education Sciences

Saved in:

Bibliographic Details
Main Authors:	Skeers, Timothy M., McCowan, Sherry
Format:	Recurso educativo Open Access
Language:	en
Published:	1993
Subjects:	Depository Libraries Federal Government Government Publications Optical Data Disks Reference Materials Social Sciences
Online Access:	Acceder al recurso
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_version_	1867181587458686976
author	Skeers, Timothy M. McCowan, Sherry
author_facet	Skeers, Timothy M. McCowan, Sherry Skeers, Timothy M. McCowan, Sherry
collection	Education Resources Information Center
contents	Social Science Reference and U.S. Government Information on CD-ROM: Depository Titles. Skeers, Timothy M. McCowan, Sherry Depository Libraries Federal Government Government Publications Optical Data Disks Reference Materials Social Sciences Discussion of CD-ROM titles available through the Depository Library Program of the U.S. Government Printing Office that are useful for research in the social sciences reviews 12 titles issued by the Bureau of the Census, Department of Commerce, Environmental Protection Agency, Department of Labor, and Department of Health and Human Services. (Contains seven references.) (LRW)
format	Recurso educativo Open Access
id	eric_EJ483751
institution	ERIC Institute of Education Sciences
language	en
publishDate	1993
record_format	eric
spellingShingle	Social Science Reference and U.S. Government Information on CD-ROM: Depository Titles. Skeers, Timothy M. McCowan, Sherry Depository Libraries Federal Government Government Publications Optical Data Disks Reference Materials Social Sciences Social Science Reference and U.S. Government Information on CD-ROM: Depository Titles. Skeers, Timothy M. McCowan, Sherry Depository Libraries Federal Government Government Publications Optical Data Disks Reference Materials Social Sciences Discussion of CD-ROM titles available through the Depository Library Program of the U.S. Government Printing Office that are useful for research in the social sciences reviews 12 titles issued by the Bureau of the Census, Department of Commerce, Environmental Protection Agency, Department of Labor, and Department of Health and Human Services. (Contains seven references.) (LRW)
title	Social Science Reference and U.S. Government Information on CD-ROM: Depository Titles.
topic	Depository Libraries Federal Government Government Publications Optical Data Disks Reference Materials Social Sciences
url	https://eric.ed.gov/?id=EJ483751

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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