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Bibliographic Details
Main Author:	Elena Medina
Format:	Artículo científico
Language:	es
Published:	Universidad de Guadalajara 2006
Subjects:	Comunicación TDT televisión digital sector audiovisual medios de comunicación
Online Access:	https://www.redalyc.org/articulo.oa?id=34600606
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La televisión digital terrestre, protagonista del panorama audiovisual en España Elena Medina Alicia Tapia Pedro Gómez Nereida López Comunicación TDT televisión digital sector audiovisual medios de comunicación En el 2010 se producirá el apagónanalógico en España, por lo que instituciones, cadenas de televisión ygrupos mediáticos, proveedores decontenidos y distribuidores se preparanpara el salto a la década digital. Algunas medidas recientes han provocado el nacimiento de nuevos canales analógicos, mientras se suceden las concesiones administrativas de licencias para emitir en digital. Sin embargo, las cadenas no acaban de apostar por un diseño y una oferta de contenidos que sirva para despertar el interés del espectador hacia la nueva televisión digital. La razón fundamental sigue siendo de índole económica. 2006 artículo científico 0188-252X https://www.redalyc.org/articulo.oa?id=34600606 es http://www.redalyc.org/revista.oa?id=346 Comunicación y Sociedad application/pdf Universidad de Guadalajara Comunicación y Sociedad (México) Num.6

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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