Paul m. jones _ there are no solutions, only tradeoffs

I had thought the distinction between the purpose of PSR-7, and the purpose of the server-side request/response object RFC, was obvious from their descriptions. Data recovery usb flash drive But that is apparently not the case.

I would prefer to discuss the RFC entirely on its own merits, and not dwell on the various strengths and weaknesses of PSR-7. Data recovery windows However, to reduce confusion on this topic, I am happy to take some time to expound on the differences.

PSR-7 was born to answer the question, “How can we model HTTP messages in PHP for sending a request, and getting back a response?” That is, how can we standardize the model of an HTTP request message for sending, and the model of the returned the HTTP response, when using PHP as an HTTP client?

The entrance vote passed in Jan 2014 after about a year of pre-work, with Michael “Guzzle” Dowling as lead: https://groups.google.com/d/topic/php-fig/H1Lr7FYxj94/discussion. Database definition You can see the original draft at https://github.com/php-fig/fig-standards/pull/244/files.

What you’ll find in the draft is one pair of request/response interfaces, descended from a message interface, with stream as message body, and no URI specification.


Data recovery definition These were designed primarily as client interfaces; all the referenced projects in the draft were client-side. Database or database (As a side note, they were mutable. Data recovery software windows Dowling said, “Having mutable and immutable messages would add a significant amount of complexity to a HTTP message PSR and would not reflect what is currently being used by a majority of PHP projects.”)

After 8 months, Dowling stepped down in August 2014, citing a lack of time and motivation. Cost of data recovery He also said: “I don’t think there’s one way to represent HTTP messages, clients, or servers in PHP.” https://groups.google.com/forum/#!topic/php-fig/XwFcqSmqzGk

Shortly thereafter, in September 2014, with encouragement from many (including myself), MWOP of Zend Framework takes over PSR-7. Database first entity framework We learn that he has “Sencha Connect” and middleware on the brain:

The reason I wanted to port Connect is this: an application consists of middleware. Data recovery iphone 5 Each middleware is a callback that accepts a request, response, and a callback called “next” (which is optional, actually):

I know from Michael Dowling that the original intent for PSR-7 was to define HTTP messages that could then be used in HTTP clients. Raid 0 data recovery I am here to argue that they are even more important when considering server-side applications.

At this point, we see that PSR-7 has been expanded to answer a second question: “How can we model HTTP messages for receiving a request, and sending back a response?” This is in addition to the original goal, but idea is the same: building a standard model of HTTP messages.

It is during MWOP’s tenure, before the successful acceptance vote in May 2015, that we see the PSR-7 interfaces expand in number, and become “immutable” (with one intentional exception, and other unintentional exceptions).

So we can see that the purpose of PSR-7 is to model 2 sets of HTTP messages using 7 interfaces: one set for when PHP sends a request and receives a response, and an addition set for when PHP receives a request and sends a response. 7 data recovery serial key The Purpose of the Server(Request|Response) RFC

The proposed RFC starts out by asking a different question. Database modeling It is not concerned with modeling HTTP messages, whether when sending or receiving them. A database record is an entry that contains Instead, it asks: “How can we take the request-related superglobals in PHP, and the various response-related global functions in PHP, and encapsulate them in objects, to make them at least a little more object-oriented?” Becuase the RFC begins with a different question, it leads to a different answer.

You end up with a ServerRequest object that exposes almost only properties, mimicking PHP’s superglobals. Java database The properties are read-only, since they represent user input that should be copied out, not changed-in-place. Easeus data recovery 9 serial As a convenience, a lot of common $_SERVER[‘HTTP_*’] values are parsed into more usable representations. Iphone 5 data recovery software free Conceding the needs of application development, there are properties and methods for truly immutable values relating to application-specific parameters, parsed content input, and so on.

You also end up wih a ServerResponse object that exposes only methods, mimicking some of PHP’s global functions. Database partitioning Instead of emitting headers and cookies on each call to the related methods, it buffers and retains the header and cookie values until you decide to send them. Database gif As a collection point for those values, and for content, you can inspect the state of the object prior to sending, and modify it as needed. Database project ideas It has some convenience methods, not least of which includes sending content as a download, or as JSON, with the appropriate headers. Iphone 5 data recovery without backup Conclusion

I hope this helps to clear up any confusion as to the purpose of the RFC, vs. Bplan data recovery the purpose of PSR-7. Data recovery boston ma They start with different questions, and have different goals. Ipad 2 data recovery I think it would be better to see them as orthogonal to each other at worst, and complementary at best.

Nearly every PHP framework and library-collection since 2000 has had classes to encapsulate the “request” and “response” elements of a PHP application. Data recovery company A handful of examples include:

Copy the $_GET, $_POST, $_SERVER, etc. Data recovery network drive superglobals into a “request” object. Data recovery yelp Some make them available through a method that standardizes the logic to get a default value when a key is not present, a la return (isset($_GET[$key]) ? $_GET[$key] : $defaultValue).

The “response” object is a place to hold headers, cookies, status, and content, so they can all be inspected and modified before sending, and to make testing easier. Database join table (This is because the header(), setcookie(), etc. Google database functions in PHP are not especially amenable to inspection, modification, and testing – at least, not without being wrapped somehow.)

Why do framework and library-collection authors write these request and response objects? Because PHP, even though it is a web-centric programming language, and even though it provides all sorts of classes for all sorts of functionality, it has never had classes for server-side requests and responses. Database quizlet This RFC helps to improve this situation in PHP 7 and later.

The developer’s intent here is to see if there are any rows at all in the database that match a certain condition. Database synonym He does so by issuing a query, then asking the result object how many rows it has. Database management jobs The developer doesn’t actually want any data from the result, and doesn’t care about the actual row-count itself; this is just a check to see if at least one row exists in the database.

This is a poor conservation of resources. Iphone 6 data recovery free The database does the work needed to select all the columns for all the rows matching the conditions, allocates memory for them, and returns them. Data recovery ubuntu But the developer discards all that immediately.

To accomplish the same end, it is less resource-intensive and just as effective to query for a single column and limit the results to a single row: $result = $mysqli->query(“

(As a side note, I find it interesting that I have not seen this pattern at all in projects using PDO. Database diagram tool I’m not sure why this would be. Database field types Perhaps there is some originating example code for mysqli somewhere that has gained a life of its own through copying and reuse.)

UPDATE: Perhaps a better way to conserve resources, courtesy of Reddit user marcjschmidt, is to use a COUNT() in the query, then fetch the count of rows, something more like this … $result = $mysqli->query(“

UPDATE 2: Lots of commentary in the above Reddit thread. Data recovery best buy To summarize this blog post: selecting all columns of all rows, then examining $num_rows, and then discarding the result set, is a terrible way of determining if there are any matching rows at all in the database. Raid 5 data recovery It is trivially easy to something much better, whether by using a LIMIT 1 and $num_rows, or some form of COUNT(), or perhaps some other approach.

The new Package Development Standards initiative is proud to present its first publication, pds/skeleton (and the related research) for public review. Database administrator salary nyc If you are a package author, you are invited to post your comments and criticisms of the publication as issues on the relevant Github repository.

The pds/skeleton publication describes a set of standard top-level PHP package directories and files. Database p If you are an author of more than three packages on Packagist, chances are you already follow the standard! That’s because PDS initiative researches the PHP package ecosystem to recognize commonly adopted development practices. Cloud 9 database (See this list of over than 47,000 packages; if your package is there, it has been tentatively noted as already compliant.)

The public review period will last at least 2 weeks, perhaps longer. Data recovery on ssd If there are no substantial errors revealed during that time, the standard will advance to “beta” status for adoption, and then to “stable” if no further errors are discovered in use.

Meanwhile, if you review the publication and determine that your package follows it, you should add pds/skeleton to your Composer “require-dev” block, because that will help the initiative track formal adoption rates.

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