RecursiveIterator and its relatives are quite handy in any tree-related situation. Probably the most used is RecursiveDirectoryIterator for getting all files recursively in a directory. But this family of iterators has some issues to be addressed so that developers do not end up fleeing. First, you must not fear SPL. But there's more. Let's see…This is a short entry for further reference
Left padding an integer with zeros was never so easy. Can't believe this ended up working.
function LeadWithZeros(num, pad) {
return (Array(pad).join('0') + num).slice(-pad);
}
LeadWithZeros(5, 3) === '005';
LeadWithZeros(65, 3) === '065';
LeadWithZeros(120, 3) === '120';Hi everyone, you programmers trying to grasp the intricacies of PHP. As coders, our raw material is, and will be, information and knowledge. But lack of knowledge does not give us some information, too? Is of this absence that we will discuss today: How to know if we don't know something in PHP. And our main tools are isset, is_null and empty. Want to know more about them? Which one is The Good, The Bad and The Ugly?
As many companies offering online services do, we handle multiple currencies. This often involves querying external services to know the real value of the currency exchange. Previously, this logic was scattered all over the code, even copy-pasted in multiple files, and is pretty hard to mantain, let alone to test.
So, in my work detecting and extracting patterns from old spaghetti code, I came with the following solution: A Service layer.
I'm in the real need to know if, given a string className or object, it implements a particular interface. I'm specially interested in the string className part.
During the search, many seemingly valid options appeared: instanceof, is_subclass_of, is_a, ReflectionClass::ImplementsInterface, class_implements… Which one to use? Let's do some testing!
It's a fact: 2010 comes to an end in 2 weeks, and it's time for me to take stock of the year, get some numbers, think about them… As I did last year.
While coding under Zend Framework there's a standard for what htaccess files should look like. Using mod_rewrite every request is checked against the filesystem for existance, and then served. If it does not exists, the control passes to index.php who starts the Zend Application.
Since, even nowadays, every disk access is paid in valuable time, I made my own htaccess, optimized for disk avoidance whenever possible. After all, it's only a convention to follow, isn't it?
Searching for a simple credit card validation algorithm? The Luhn algorithm is a simple checksum that validates most identification numbers, mainly used in credit card ones. It's implementation is quite simple. Need one? Just come along!
I love SPL... so simple, so powerful, so flexible.
RecursiveDirectoryIterator was having problems while scanning a directory and threw me some nice errors on permissions, so I coded the snippet below...
Poner puertas al campo es algo que todos los gobiernos han intentado, sea cual sea el color que enarbolen, y todo es gracias a los hombres tras la cortina, que parecen hacer y deshacer a su antojo.
Y es por eso, y a raiz de la polémica Ley de Economía Sostenible, que nace la plataforma Red-SOStenible, bajo el lema A partir de hoy, Red y Libertad
, y con ellos su campaña Internet NO será otra tele. Sus objetivos son claros: Detener dicha ley mediante el diálogo con los representantes nacionales y la promoción de acciones ciudadanas.
Es difícil de creer pero, a estas alturas, hay muchísima gente que aún no se da cuenta del grave problema de libertades que hay en nuestro país en lo que respecta a las nuevas tecnologías.
Y así, como donde empiezan las libertades de uno, terminan las de otro, se nos insulta públicamente tachándonos de "piratas" mientras, por la trastienda, nos están cobrando cánones a cascoporro. Muy bonito, señores, muy bonito. Y todo por algo que es, demostrado en los tribunales, absolutamente legal.
En fin, el problema inicial son las industrias que pretenden mantener su cuota de mercado a cambio de nada, continuando su arcano modelo de mercado. Las discográficas ya hace tiempo que se resisten, pero con el mercado de eReaders en expansión, pronto se añadirán también las editoriales.
Señores que quieren y/o necesitan vivir económicamente del pasado:
Aplíquense el dicho, Renovarse o morir
. No vamos a quedarnos de brazos cruzados.
May the 2010 year bring you happiness and joy. And may all your dreams come true, like IE dissapearing from the face of the Net. This would be nice...
While writing my first CSS Sprite article, I created a simple, in no way efficient, sprite generator. Last week I needed to show some numbers to the project manager to convince him the sprite technique is worth using, so I modified a bit the program to arrange the icons in different layouts and show the size savings.
Want to know with which layout I improved the file size by 78.6%?
Inicié este blog hará cosa de 9 meses. No con un deseo comercial ni para obtener visitas a cascoporro, si no como terapia. Mi pretensión era la de practicar mi inglés mientras compartía los problemas que me iba encontrando en mis andaduras con la web. Pero está claro que algo falla en ese enfoque: Si ya es complejo mantener un blog en un idioma que es natural para uno mismo, más complicado es hacerlo en una lengua distinta.
¿Debería seguir, como hasta ahora, publicando en inglés? ¿O quizá ahorrarme molestias y expresarme en mi propia lengua?
Ever wanted a website that looks the same in all browsers? Tired of fighting slimy monsters while searching for excellance? Do these differences in UL padding make your head explode? So it's time for you to apply some CSS Reset Magic.
When it relates to CSS reset, there's a bunch of literature, do's and don't's, faqs and howtos, so this one won't take us too long.
It's easy to get lost in the Internet while looking for information. It's one of its greatest points: There are thousands of millions of websites out there. Information is the key purpose of the net and nobody can deny it.
But, as in many other cases, quantity does not equal quality. Poor designed websites, too bloated, with many inlined styles or little semantics (if none), are begging for trouble: Their information have lost accessibility.
And W3C said Let there be frames
, and there was frames, and they were used (and abused) and it was good, and W3C said This is right (we're gonna deprecate them soon)
and there was much rejoicing.
Is not new that web developers hate all that's made with frames. They're a burden nobody wants to carry, so confusing, so "nineties", so... well, deprecated, that's it. So you may think I'm just delving into the past. Frames, as we know it, are dissapearing into extinction but, the main idea, more or less, is still needed nowadays.
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