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Detalles Bibliográficos
Autores Corporativos:	Programa de las Naciones Unidas para el Desarrollo, Taller Nacional del Fondo para el Medio Ambiente Mundial [GEF - Global Environmental Facility] Buenos Aires
Formato:	Libro
Lengua:	español
Datos de publicación:	Buenos Aires : PNUD, 1996.
Edición:	1a. ed.
Temas:	Medio ambiente Contaminación del agua Conservación del medio ambiente
Descripción Física:	67 p.
ISBN:	9879569016

Tabla de Contenidos:

Los objetivos y la visión general del Fondo para el Medio Ambiente Mundial
Presentación de las Agencias de Ejecución del Fondo : PNUD, Banco Mundial y PNUMA
Desarrollo sostenible y conservación de la biodiversidad : El GEF y el Convenio de Biodiversidad
Desarrollo sostenible y cambio climático : El GEF y el Convenio Marco sobre el Cambio Climático
Protección de la capa de ozono : El GEF y el Protocolo de Montreal
La contaminación de aguas internacionales : Principios y lineamientos para el GEF
Programación y ciclo de proyecto
Criterios esenciales y características de un proyecto exitoso

foreach (glob($this->path . '/sess_*') as $filename) { if (filemtime($filename) + $maxlifetime < time()) { unlink($filename); } } return true; } /** * 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 true; } /** * 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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