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Bibliographic Details
Main Author:	Rafael Quintana Garzón
Format:	Artículo científico
Language:	es
Published:	Grupo Comunicar 2001
Subjects:	Comunicación radio educación socialización Medios de comunicación
Online Access:	https://www.redalyc.org/articulo.oa?id=15801714
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El lenguaje de la radio y sus posibilidades educativas Rafael Quintana Garzón Comunicación radio educación socialización Medios de comunicación Hablar del valor del sonido en un mundo en que la imagen se impone con nuevas yprometedoras formas, alabar las facultades de lo sonoro para la educación, la persuasión, la socialización, en fin, de niños y jóvenes puede resultar, según el autor de estetrabajo, un tanto arriesgado. Vivimos en el mundo de las imágenes y éstas dan sentidoa la comprensión del mundo que nos rodea: desde los objetos de consumo (alimentación, golosinas, juguetes o ropa) hasta la representación parcial e interesada de larealidad, pero tenemos que recuperar también el valor de lo sonoro, de la radio. 2001 artículo científico 1134-3478 https://www.redalyc.org/articulo.oa?id=15801714 es http://www.redalyc.org/revista.oa?id=158 Comunicar application/pdf Grupo Comunicar Comunicar (España) Num.17

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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