Lector de código de barras tipo lápiz /

Detalles Bibliográficos
Autor Principal:	Benítez, Juan Manuel
Formato:	Libro
Lengua:	español
Datos de publicación:	La Plata : Universidad Nacional de La Plata. Departamento de Electrotecnia.
Series:	Trabajo Final de Ingeniería Electrónica; 747
Temas:	MICROCONTROLADORES CODIGO DE BARRAS SENSOR OPTICO LECTOR DE CODIGO DE BARRAS
Resumen:	1- Código de barras. 2- Descripción del proyecto. 3- Detección y acondicionamiento de señal. 4- Desarrollo de prototipo. 5- Detección y acondicionamiento de señal. 6- Pruebas realizadas y conclusiones.
Descripción Física:	136 p. : figuras

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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'

Environment & details:

GET Data empty

POST Data empty

Files empty

Cookies empty

Session

Key	Value
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SessionState	Laminas\Stdlib\ArrayObject {#905}
FlashMessenger	Laminas\Stdlib\ArrayObject {#1506}
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HTTP_HOST	"catalogo.bibliotecas.unlp.edu.ar"
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REMOTE_PORT	"28695"
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REQUEST_METHOD	"GET"
QUERY_STRING	""
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SCRIPT_NAME	"/index.php"
PHP_SELF	"/index.php"
REQUEST_TIME_FLOAT	1738368427.954
REQUEST_TIME	1738368427

Environment Variables empty

Registered Handlers

0. Whoops\Handler\PrettyPageHandler

Environment & details:

GET Data empty

POST Data empty

Files empty

Cookies empty

Session

Key	Value
__Laminas	array:2 [`"_REQUEST_ACCESS_TIME" => 1738368427.9767 "_VALID" => array:1 [ "Laminas\Session\Validator\Id" => "e19q66qnqbnl6igidfk33eap9t" ]`]
SessionState	Laminas\Stdlib\ArrayObject {#905}
FlashMessenger	Laminas\Stdlib\ArrayObject {#1506}
SessionHelper	Laminas\Stdlib\ArrayObject {#1652}

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REDIRECT_STATUS	"200"
VUFIND_ENV	"development"
VUFIND_LOCAL_DIR	"/usr/local/vufind/local"
HTTPS	"on"
SSL_TLS_SNI	"catalogo.bibliotecas.unlp.edu.ar"
HTTP_ACCEPT	"/"
HTTP_USER_AGENT	"Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)"
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SERVER_ADMIN	"webmaster@bibliotecas.unlp.edu.ar"
SCRIPT_FILENAME	"/usr/local/vufind/public/index.php"
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QUERY_STRING	""
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REQUEST_TIME_FLOAT	1738368427.954
REQUEST_TIME	1738368427

Environment Variables empty

Registered Handlers

0. Whoops\Handler\PrettyPageHandler

Lector de código de barras tipo lápiz /

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