Books and Periodicals.

Fuente: ERIC Institute of Education Sciences

Saved in:

Bibliographic Details
Main Authors:	Lonardo, Michael, And Others
Format:	Recurso educativo Open Access
Language:	en
Published:	1994
Subjects:	Academic Libraries Higher Education Library Acquisition Library Automation Library Collection Development Library Services Purchasing Search Strategies Selective Dissemination of Information
Online Access:	Acceder al recurso
Tags:	Add Tag No Tags, Be the first to tag this record!

_version_	1867180561569677312
author	Lonardo, Michael And Others
author_facet	Lonardo, Michael And Others Lonardo, Michael And Others
collection	Education Resources Information Center
contents	Books and Periodicals. Lonardo, Michael And Others Academic Libraries Higher Education Library Acquisition Library Automation Library Collection Development Library Services Purchasing Search Strategies Selective Dissemination of Information Special section includes two articles on academic library collection management: "Current Awareness: Acquisitions to Endusers" (Michael Lonardo and Dianne Taylor-Harding) describes methods for announcing recent library acquisitions to faculty; and "Book Acquisitions: A Purchasing System" (Ting Zheng and Joyce Huang) explains a purchasing system that sends orders to vendors via the Internet. (LRW)
format	Recurso educativo Open Access
id	eric_EJ486703
institution	ERIC Institute of Education Sciences
language	en
publishDate	1994
record_format	eric
spellingShingle	Books and Periodicals. Lonardo, Michael And Others Academic Libraries Higher Education Library Acquisition Library Automation Library Collection Development Library Services Purchasing Search Strategies Selective Dissemination of Information Books and Periodicals. Lonardo, Michael And Others Academic Libraries Higher Education Library Acquisition Library Automation Library Collection Development Library Services Purchasing Search Strategies Selective Dissemination of Information Special section includes two articles on academic library collection management: "Current Awareness: Acquisitions to Endusers" (Michael Lonardo and Dianne Taylor-Harding) describes methods for announcing recent library acquisitions to faculty; and "Book Acquisitions: A Purchasing System" (Ting Zheng and Joyce Huang) explains a purchasing system that sends orders to vendors via the Internet. (LRW)
title	Books and Periodicals.
topic	Academic Libraries Higher Education Library Acquisition Library Automation Library Collection Development Library Services Purchasing Search Strategies Selective Dissemination of Information
url	https://eric.ed.gov/?id=EJ486703

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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