Warning: include() [function.include]: http:// wrapper is disabled in the server configuration by allow_url_include=0 in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 49

Warning: include(http://www.navegalis.com/comunes/rotador.banner.inc.php?rotador=468x60) [function.include]: failed to open stream: no suitable wrapper could be found in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 49

Warning: include() [function.include]: Failed opening 'http://www.navegalis.com/comunes/rotador.banner.inc.php?rotador=468x60' for inclusion (include_path='.:') in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 49

Warning: include() [function.include]: http:// wrapper is disabled in the server configuration by allow_url_include=0 in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 50

Warning: include(http://www.navegalis.com/comunes/cabecera.menu.inc.nav.php?subdir=Webmasters) [function.include]: failed to open stream: no suitable wrapper could be found in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 50

Warning: include() [function.include]: Failed opening 'http://www.navegalis.com/comunes/cabecera.menu.inc.nav.php?subdir=Webmasters' for inclusion (include_path='.:') in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 50

Ultimos artículos para Webmasters


Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Berlin' for 'CEST/2.0/DST' instead in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 65

Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Berlin' for 'CEST/2.0/DST' instead in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 66

He aquí una recopilación de clases php imprescindibles para todo desarrollador:

Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Berlin' for 'CEST/2.0/DST' instead in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 70

Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Berlin' for 'CEST/2.0/DST' instead in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 71

Navengado por la red, he encontrado una buena lista de sitios con información interesante sobre AJAX, tecnología cada vez más utilizada en los proyectos web.

Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Berlin' for 'CEST/2.0/DST' instead in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 70

Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Berlin' for 'CEST/2.0/DST' instead in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 71

Visual jquery es una herramienta para encontrar de forma ordenada, rápida y visual toda la documentación sobre jquery, necesaria para desarrollar nuestros proyectos webs basados en esta librería.

Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Berlin' for 'CEST/2.0/DST' instead in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 65

Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Berlin' for 'CEST/2.0/DST' instead in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 66

Una de las formas mas sencillas de crear un menú utilizando css es mediante el uso de listas:

Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Berlin' for 'CEST/2.0/DST' instead in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 65

Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Berlin' for 'CEST/2.0/DST' instead in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 66

En algunos casos se nos ha planteado el tema de utilizar hojas de estilo que puedan variar en función de variables, por ejemplo:

Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Berlin' for 'CEST/2.0/DST' instead in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 65

Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Berlin' for 'CEST/2.0/DST' instead in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 66

AJAX nos permite enviar variables utilizando el método GET y POST sin recargar la página, para ello, lo que haremos será cargar un archivo externo (recuerdo, sin recargar la página), dentro de una etiqueta DIV.


Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Berlin' for 'CEST/2.0/DST' instead in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 65

Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Berlin' for 'CEST/2.0/DST' instead in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 66

AJAX, acrónimo de Asynchronous JavaScript And XML (en inglés JavaScript y XML asíncronos.


Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Berlin' for 'CEST/2.0/DST' instead in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 65

Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Berlin' for 'CEST/2.0/DST' instead in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 66

Muchas veces es útil en nuestra página web colocar un indicador automático que muestre la fecha actual. Normalmente javascript suele ser una alternativa sencilla y rápida para hacer esta función, pero desde php también puede hacerse.


Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Berlin' for 'CEST/2.0/DST' instead in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 65

Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Berlin' for 'CEST/2.0/DST' instead in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 66

Continuamos con esta pequeña guía para manejar sesiones. En el capítulo anterior vimos como manejar de forma genérica las sesiones con PHP, ahora nos proponemos realizar un pequeño y simple script para gestionar un carro de compra con PHP.

Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Berlin' for 'CEST/2.0/DST' instead in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 65

Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Berlin' for 'CEST/2.0/DST' instead in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 66

¿Qué es una sesión? De una forma sencilla, podemos decir que es un sistema para guardar información de forma temporal en el servidor, por ejemplo, los datos de usuario y contraseña en una zona restringida. Lo que haríamos en este caso es crear una sesión con estos datos, y guardarla de forma temporal en el servidor, para que el usuario no tuviera que estar enviando dichos datos cada vez que entrara en una página distinta de la sección. El sistema se ocuparía de validar al usuario utilizando los datos de sesión.


Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Berlin' for 'CEST/2.0/DST' instead in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 65

Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Berlin' for 'CEST/2.0/DST' instead in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 66

Muchas veces nos encontramos con el problema de informar tanto a los visitantes como a los buscadores que un dominio ha dejado de exisitir y ahora el contenido del web se encuentra en otro: Es lo que llamamos una redirección permamente, por ejemplo:


Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Berlin' for 'CEST/2.0/DST' instead in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 65

Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Berlin' for 'CEST/2.0/DST' instead in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 66

PHP dispone de un potente parseador de XML (que ya explicaremos en otro articulo), pero también podemos parsear el codigo XML a PHP utilizando expresiones regulares.


Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Berlin' for 'CEST/2.0/DST' instead in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 65

Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Berlin' for 'CEST/2.0/DST' instead in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 66

La ventaja de lenguajes Web como PHP, ASP o JSP es que nos permiten insertar codigo externo, o mejor dicho, organizar los contenidos de nuestra página web en archivos, para después ir llamándolos según los necesitemos.


Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Berlin' for 'CEST/2.0/DST' instead in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 65

Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Berlin' for 'CEST/2.0/DST' instead in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 66

La redirección hacia una página web es uno de los sistemas mas utilizados por los webmasters, ya sea para enviarnos hacia otra página externa o cualquier otro motivo.


Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Berlin' for 'CEST/2.0/DST' instead in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 65

Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Berlin' for 'CEST/2.0/DST' instead in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 66

Muchas veces es interesante que nuestra web no se guarde en cache en el ordenador de nuestros visitantes, ya sea porque actualizamos continuamente, o por cualquier otro motivo, que puede hacer que cuando nos vuelva a visitar, en vez de mostrar el contenido nuevo de nuestro web, el navegador muestre la página cacheada en local para realizar una carga de la misma más rápida.


Warning: include() [function.include]: http:// wrapper is disabled in the server configuration by allow_url_include=0 in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 80

Warning: include(http://www.navegalis.com/comunes/rotador.banner.inc.php?rotador=160x600) [function.include]: failed to open stream: no suitable wrapper could be found in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 80

Warning: include() [function.include]: Failed opening 'http://www.navegalis.com/comunes/rotador.banner.inc.php?rotador=160x600' for inclusion (include_path='.:') in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 80

Warning: include() [function.include]: http:// wrapper is disabled in the server configuration by allow_url_include=0 in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 82

Warning: include(http://www.navegalis.com/comunes/pie.html.inc.php) [function.include]: failed to open stream: no suitable wrapper could be found in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 82

Warning: include() [function.include]: Failed opening 'http://www.navegalis.com/comunes/pie.html.inc.php' for inclusion (include_path='.:') in /var/www/vhosts/navegalis.com/subdomains/webmasters/httpdocs/index.php on line 82