Php Training Trivandrum

What version of PHP should my package support? Everybody likes “the new hotness.” Everyone loves a new car, or a new computer, or the state-of-the-art video gaming console. It’s why people camp out for days to get their hands on a new iPhone, when they could just buy one the next week off the shelf. People love to have the hot thing, right now. Perhaps, then, it shouldn’t be so surprising that people get tremendously excited when a new version of PHP comes out. People look forward to the new features, whether they be the trailing commas in list() syntax or counting of non-countable objects. Everyone loves a new release of PHP. A new version of PHP can pose challenges to open source package maintainers. There are questions, like what is the minimum version we will support and how soon can we take advantage of the new features we’ve been waiting on? I want to offer up some thoughts, both as a package maintainer and a user of many open source packages. To me, an open ...

Simple CQRS - reduce coupling, allow the model(s) to evolve CQRS - not a complicated thing CQRS has some reputation issues. Mainly, people will feel that it's  too complicated  to apply in their current projects. It will often be considered  over-engineering . I think CQRS is simply misunderstood, which is the reason many people will not choose it as a design technique. One of the common misconceptions is that CQRS always goes together with event sourcing, which is indeed more costly and risky to implement. CQRS alone simply means that you're making a distinction between a model that is used for changing state, and a model that is used for querying state. In fact, there's often  one  model that accepts "write" operations (called "write model" or "command model") and  multiple  models that can be used to "read" information from (called "read models", or "query models"). Most projects out there don't...

Returning From Command Buses The most common question I get about my command bus library is: “can commands really return nothing?” The second most common question is “Why do you let commands return something, don’t you know that’s Wrong(tm)?” It’s easy to get hung up on form, not function. That’s a shame because command buses aren’t important. In the grand scheme of things, they’re completely, utterly, totally unimportant. It’s all about where the messages are going, not how they get there. Still, let’s take a look at some myths about command buses. “Command Buses are a part of CQRS and they always go together.” CQRS is about the separation of a (write) model that solves a problem and a (read) model that informs you about problems. This is a useful lens for viewing some domains. While I wasn’t there when the term was coined (and haven’t asked), it’s pretty logical to assume the “Command” in “Command Bus” had the same etymology. It was a piece of plumbing used to addr...

PSR-15 Yesterday, following a unanimous vote from its Core Committee,  PHP-FIG  formally accepted the proposed  PSR-15, HTTP Server Handlers  standard. This new standard defines interfaces for  request handlers and  middleware . These have enormous potential impact on the PHP ecosystem, as they provide standard mechanisms for writing HTTP-facing, server-side applications. Essentially, they pave the way for developers to create re-usable web components that will work in any application that works with PSR-15 middleware or request handlers! Caveat I acted as sponsor on PSR-15, and as final arbiter of changes during the review period. Background PSR-15 was started by  Woody Gilk , who has acted in the role of Editor for its duration. The original intent was to ratify a middleware standard, and it was initially thought that it would be a quick ratification of a pattern that was already in wide use: function ( ServerRequestInte...