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Bibliographic Details
Main Author:	Edgar Arturo Sánchez Moreno
Format:	Artículo científico
Language:	es
Published:	Instituto de Ecología, A.C. 2006
Subjects:	Agrociencias PRODEPLAN base de datos Administración de proyectos Sistema de Información Geográfica
Online Access:	https://www.redalyc.org/articulo.oa?id=61712207
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SIPLAN: Sistema de información para administrar plantaciones comerciales en México Edgar Arturo Sánchez Moreno David H. del Valle Paniagua Manuel de Jesús González Guille¿ José René Valdez Lazalde Agrociencias PRODEPLAN base de datos Administración de proyectos Sistema de Información Geográfica Se diseñó e implementó un sistema de información para el manejo de las plantaciones(SIPLAN) que subsidia el Programa para el Desarrollo de Plantaciones Forestales Comerciales(PRODEPLAN), dependiente de la Comisión Nacional Forestal (CONAFOR) en México. El SIPLANcontiene una base de datos relacional, capaz de manejar los proyectos de plantaciones forestales y,además liga la base de datos con un Sistema de Información Geográfica para visualizar la distribuciónespacial de las plantaciones. El sistema representa una herramienta sencilla en el seguimiento ycontrol de la información y toma de decisiones para los administradores del PRODEPLAN. 2006 artículo científico 1405-0471 https://www.redalyc.org/articulo.oa?id=61712207 es http://www.redalyc.org/revista.oa?id=617 Madera y Bosques application/pdf Instituto de Ecología, A.C. Madera y Bosques (México) Num.2 Vol.12

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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