Programación estructurada : Un enfoque algorítmico

Mostrar todas las versiones(3)

Detalles Bibliográficos
Autor Principal:	López Román, Leobardo
Formato:	Libro
Lengua:	español
Datos de publicación:	México : Alfaomega, 2003
Edición:	2a ed.
Temas:	PROGRAMACIÓN ESTRUCTURADA ALGORITMOS
Acceso en línea:	Consultar en el Cátalogo
Descripción Física:	666 p. ; 23 cm.
ISBN:	9701508564

Tabla de Contenidos:

1- Introducción a la programación 2- Elementos para solucionar problemas en pseudocódigo 3- La secuenciación 4- La selección 5- La repetición DO UNTIL 6- La repetición FOr 7- La repetición DOWHILE 8- Arreglos 9- Diseño descendente (Top Down Design) 10- Registros y archivos 11- Otros tipos de datos y otros temas
Apéndices
Bibliografía.

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

Key	Value
VUFIND_SESSION	"c5jiu591suviac82765k9dnr2q"
ui	"standard"
language	"es"

Session

Key	Value
__Laminas	array:2 [`"_REQUEST_ACCESS_TIME" => 1749488516.5083 "_VALID" => array:1 [ "Laminas\Session\Validator\Id" => "c5jiu591suviac82765k9dnr2q" ]`]
SessionState	Laminas\Stdlib\ArrayObject {#906}
FlashMessenger	Laminas\Stdlib\ArrayObject {#1507}
SessionHelper	Laminas\Stdlib\ArrayObject {#1676}

Server/Request Data

Key	Value
REDIRECT_SCRIPT_URL	"/Record/dun.52007/TOC"
REDIRECT_SCRIPT_URI	"http://vufind10-pruebas.sigbunlp.bibliotecas.unlp.edu.ar/Record/dun.52007/TOC"
REDIRECT_VUFIND_ENV	"development"
REDIRECT_VUFIND_LOCAL_DIR	"/usr/local/vufind/local"
REDIRECT_STATUS	"200"
SCRIPT_URL	"/Record/dun.52007/TOC"
SCRIPT_URI	"http://vufind10-pruebas.sigbunlp.bibliotecas.unlp.edu.ar/Record/dun.52007/TOC"
VUFIND_ENV	"development"
VUFIND_LOCAL_DIR	"/usr/local/vufind/local"
HTTP_ACCEPT	"/"
HTTP_USER_AGENT	"Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)"
HTTP_COOKIE	"VUFIND_SESSION=c5jiu591suviac82765k9dnr2q; ui=standard; language=es"
HTTP_ACCEPT_ENCODING	"gzip, br, zstd, deflate"
HTTP_HOST	"vufind10-pruebas.sigbunlp.bibliotecas.unlp.edu.ar"
HTTP_VIA	"1.1 squid-proxy-5b5d847c96-pp4jr (squid/6.10)"
HTTP_X_FORWARDED_FOR	"10.1.8.200"
HTTP_CACHE_CONTROL	"max-age=259200"
HTTP_CONNECTION	"keep-alive"
PATH	"/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin"
SERVER_SIGNATURE	"<address>Apache/2.4.52 (Ubuntu) Server at vufind10-pruebas.sigbunlp.bibliotecas.unlp.edu.ar Port 80</address>\n"
SERVER_SOFTWARE	"Apache/2.4.52 (Ubuntu)"
SERVER_NAME	"vufind10-pruebas.sigbunlp.bibliotecas.unlp.edu.ar"
SERVER_ADDR	"172.17.0.170"
SERVER_PORT	"80"
REMOTE_ADDR	"216.73.216.64"
DOCUMENT_ROOT	"/usr/local/vufind/public"
REQUEST_SCHEME	"http"
CONTEXT_PREFIX	""
CONTEXT_DOCUMENT_ROOT	"/usr/local/vufind/public"
SERVER_ADMIN	"webmaster@bibliotecas.unlp.edu.ar"
SCRIPT_FILENAME	"/usr/local/vufind/public/index.php"
REMOTE_PORT	"5745"
REDIRECT_URL	"/Record/dun.52007/TOC"
GATEWAY_INTERFACE	"CGI/1.1"
SERVER_PROTOCOL	"HTTP/1.1"
REQUEST_METHOD	"GET"
QUERY_STRING	""
REQUEST_URI	"/Record/dun.52007/TOC"
SCRIPT_NAME	"/index.php"
PHP_SELF	"/index.php"
REQUEST_TIME_FLOAT	1749488516.4979
REQUEST_TIME	1749488516

Environment Variables empty

Registered Handlers

0. Whoops\Handler\PrettyPageHandler

Environment & details:

GET Data empty

POST Data empty

Files empty

Key	Value
VUFIND_SESSION	"c5jiu591suviac82765k9dnr2q"
ui	"standard"
language	"es"

Session

Key	Value
__Laminas	array:2 [`"_REQUEST_ACCESS_TIME" => 1749488516.5083 "_VALID" => array:1 [ "Laminas\Session\Validator\Id" => "c5jiu591suviac82765k9dnr2q" ]`]
SessionState	Laminas\Stdlib\ArrayObject {#906}
FlashMessenger	Laminas\Stdlib\ArrayObject {#1507}
SessionHelper	Laminas\Stdlib\ArrayObject {#1676}

Server/Request Data

Key	Value
REDIRECT_SCRIPT_URL	"/Record/dun.52007/TOC"
REDIRECT_SCRIPT_URI	"http://vufind10-pruebas.sigbunlp.bibliotecas.unlp.edu.ar/Record/dun.52007/TOC"
REDIRECT_VUFIND_ENV	"development"
REDIRECT_VUFIND_LOCAL_DIR	"/usr/local/vufind/local"
REDIRECT_STATUS	"200"
SCRIPT_URL	"/Record/dun.52007/TOC"
SCRIPT_URI	"http://vufind10-pruebas.sigbunlp.bibliotecas.unlp.edu.ar/Record/dun.52007/TOC"
VUFIND_ENV	"development"
VUFIND_LOCAL_DIR	"/usr/local/vufind/local"
HTTP_ACCEPT	"/"
HTTP_USER_AGENT	"Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)"
HTTP_COOKIE	"VUFIND_SESSION=c5jiu591suviac82765k9dnr2q; ui=standard; language=es"
HTTP_ACCEPT_ENCODING	"gzip, br, zstd, deflate"
HTTP_HOST	"vufind10-pruebas.sigbunlp.bibliotecas.unlp.edu.ar"
HTTP_VIA	"1.1 squid-proxy-5b5d847c96-pp4jr (squid/6.10)"
HTTP_X_FORWARDED_FOR	"10.1.8.200"
HTTP_CACHE_CONTROL	"max-age=259200"
HTTP_CONNECTION	"keep-alive"
PATH	"/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin"
SERVER_SIGNATURE	"<address>Apache/2.4.52 (Ubuntu) Server at vufind10-pruebas.sigbunlp.bibliotecas.unlp.edu.ar Port 80</address>\n"
SERVER_SOFTWARE	"Apache/2.4.52 (Ubuntu)"
SERVER_NAME	"vufind10-pruebas.sigbunlp.bibliotecas.unlp.edu.ar"
SERVER_ADDR	"172.17.0.170"
SERVER_PORT	"80"
REMOTE_ADDR	"216.73.216.64"
DOCUMENT_ROOT	"/usr/local/vufind/public"
REQUEST_SCHEME	"http"
CONTEXT_PREFIX	""
CONTEXT_DOCUMENT_ROOT	"/usr/local/vufind/public"
SERVER_ADMIN	"webmaster@bibliotecas.unlp.edu.ar"
SCRIPT_FILENAME	"/usr/local/vufind/public/index.php"
REMOTE_PORT	"5745"
REDIRECT_URL	"/Record/dun.52007/TOC"
GATEWAY_INTERFACE	"CGI/1.1"
SERVER_PROTOCOL	"HTTP/1.1"
REQUEST_METHOD	"GET"
QUERY_STRING	""
REQUEST_URI	"/Record/dun.52007/TOC"
SCRIPT_NAME	"/index.php"
PHP_SELF	"/index.php"
REQUEST_TIME_FLOAT	1749488516.4979
REQUEST_TIME	1749488516

Environment Variables empty

Registered Handlers

0. Whoops\Handler\PrettyPageHandler

Programación estructurada : Un enfoque algorítmico

Ejemplares similares

Environment & details:

Environment & details: