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Bibliographic Details
Main Author:	Watkins, Christine
Format:	Recurso educativo Open Access
Language:	en
Published:	1997
Subjects:	Books Developing Nations Donors Elementary Secondary Education Foreign Countries Library Collection Development Library Development Library Materials Literacy Nonprofit Organizations School Libraries
Online Access:	https://eric.ed.gov/?id=EJ552558
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_version_	1867180607164907520
author	Watkins, Christine
author_facet	Watkins, Christine Watkins, Christine
collection	Education Resources Information Center
contents	Changing the World through Books. Watkins, Christine Books Developing Nations Donors Elementary Secondary Education Foreign Countries Library Collection Development Library Development Library Materials Literacy Nonprofit Organizations School Libraries Describes the development of Books for Africa, an organization that solicits donations of books in the United States and sends them to Africa, largely to school libraries, to improve literacy rates, increase library holdings, and build library shelves. Other organizations that donate books are also listed. (LRW)
format	Recurso educativo Open Access
id	eric_EJ552558
institution	ERIC Institute of Education Sciences
language	en
publishDate	1997
record_format	eric
spellingShingle	Changing the World through Books. Watkins, Christine Books Developing Nations Donors Elementary Secondary Education Foreign Countries Library Collection Development Library Development Library Materials Literacy Nonprofit Organizations School Libraries Changing the World through Books. Watkins, Christine Books Developing Nations Donors Elementary Secondary Education Foreign Countries Library Collection Development Library Development Library Materials Literacy Nonprofit Organizations School Libraries Describes the development of Books for Africa, an organization that solicits donations of books in the United States and sends them to Africa, largely to school libraries, to improve literacy rates, increase library holdings, and build library shelves. Other organizations that donate books are also listed. (LRW)
title	Changing the World through Books.
topic	Books Developing Nations Donors Elementary Secondary Education Foreign Countries Library Collection Development Library Development Library Materials Literacy Nonprofit Organizations School Libraries
url	https://eric.ed.gov/?id=EJ552558

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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