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SitePoint PHP Blog:
Push your Drupal Site's Events to your Phone with Pushover
February 12, 2015 @ 12:54:12

The SitePoint PHP blog has a new tutorial posted (by Daniel Sipos) about pushing notifications from your Drupal-based application via the Pushover service.

In this article I am going to show you how you can integrate Pushover with your Drupal site. I will illustrate a couple of examples of how you can use Pushover to notify yourself as soon as something happens on your site. The code I write in this article is also available in this repository so you can just clone that if you want to follow along.

He starts with an introduction to Pushover and what kinds of features it offers for the handling of push messages (with the app being not free, but "very affordable"). He help you get everything you need set up including a Pushover account and the Pushover class to use in a custom Drupal module. He includes the code you'll need to configure the module to use the library and a method to create the Pushover class instance. He then shows how to send messages for things like the addition of a new comment and user login via hooks, sending a message when an administrator logs in.

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drupal tutorial pushover push message service mobile application

Link: http://www.sitepoint.com/push-drupal-sites-events-phone-pushover/

Matthew Weier O'Phinney:
PSR-7 By Example
January 29, 2015 @ 09:13:20

As a part of his involvement in the PHP-FIG standards group, Matthew Weier O'Phinney has been contributing to the PSR-7 proposal. This proposal defines a standardized structure for HTTP message handling. In his latest post he gets into a bit more detail on what this means for the PHP developer and how it might be implemented.

PSR-7 is shaping up nicely. I pushed some updates earlier this week, and we tagged 0.6.0 of the http-message package last week for implementors and potential users to start coding against. I'm still hearing some grumbles both of "simplify!" and "not far enough!" so I'm writing this posts to demonstrate usage of the currently published interfaces, and to illustrate both the ease of use and the completeness and robustness they offer.

He starts with a base definition of what the proposal, well, proposes around HTTP messaging, both the incoming and outgoing. He describes the basic structure of an HTTP message and what each part represents. He talks about message headers, bodies and how the current library could return that content. He then looks at requests vs responses, server-side requests and some various uses cases and more practical examples:

  • HTTP Clients
  • Middleware
  • Frameworks

With the PSR-7 standard in place, all of these different tools could have interchangeable interfaces for HTTP request/responses, easily swappable with any other implementation.

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psr7 http message request response summary tool framework middleware client

Link: https://mwop.net/blog/2015-01-26-psr-7-by-example.html

SitePoint PHP Blog:
How to Encrypt Large Messages with Asymmetric Keys and phpseclib
January 20, 2015 @ 11:40:51

On the SitePoint PHP blog today David Brumbaugh shows you how to encrypt large messages with phpseclib and asymmetric keys. phpseclib is a PHP library specifically designed to handle encryption and decryption in an easy-to-use way.

Most of us understand the need to encrypt sensitive data before transmitting it. Encryption is the process of translating plaintext (i.e. normal data) into ciphertext (i.e. secret data). During encryption, plaintext information is translated to ciphertext using a key and an algorithm. To read the data, the ciphertext must be decrypted (i.e. translated back to plaintext) using a key and an algorithm. [...] A core problem to be solved with any encryption algorithm is key distribution. How do you transmit keys to those who need them in order to establish secure communication? The solution to the problem depends on the nature of the keys and algorithms.

He talks some about the difference between symmetric and asymmetric algorithms and some advice about the selection of the right one (or ones) to use in your app. He also talks briefly about the problem with RSA keys, mostly that it has limits on the amount of text it can encrypt. His solution is to "encrypt the message with a symmetric key, then asymmetrically encrypt the key and attach it to the message". He explains the encryption/decryption process step by step and starts in showing the code to make phpseclib do the work. He shows how to generate the keys, build the encrypt function and the decrypt function with about 30 lines of code each.

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encrypt decrypt large message asymetric key phpseclib tutorial

Link: http://www.sitepoint.com/encrypt-large-messages-asymmetric-keys-phpseclib/

Dave Hulbert:
Thoughts on PSR-7
January 12, 2015 @ 12:51:03

In a new post to his site Dave Hulbert has shared some of his thoughts about the PSR-7 standard, a HTTP proposal for HTTP handling.

PSR-7 contains interfaces for HTTP messages. These are like Symfony Kernel's Request and Response interfaces. Having these new interfaces would be great for the PHP community but there's a couple of issues with their current state that I'm not happy with.

One of PSR-7's goals is "Keep the interfaces as minimal as possible". I think the current interfaces are not minimal enough.

He breaks down his thoughts into a few different sections covering ideas around:

  • Immutability and PSR-7's enforcement of mutability
  • Being too strict to the (HTTP) spec
  • Splitting client and server message interfaces
  • Writing and reading from StreamableInterface

He sums up his thoughts under each section pretty quickly. If you haven't heard much about the PSR-7 proposal and want more context on what he's referencing, check out this proposal (or other posts sharing opinions from other developers).

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opinion psr7 http specification message immutability streamableinterface

Link: http://createopen.com/design/php/2014/12/15/psr-7.html

Piotr Pasich:
Rabbit behind the scenes
October 01, 2014 @ 12:19:53

In a recent post to his site Piotr Pasich shares an article about using a rabbit behind the scenes - making use of the RabbitMQ queuing system for behind the scenes work in your PHP applications.

In PHP business logic is usually put right in action's method or just behind it. Hence, every little piece of delaying and long-running code will be processed with a request. The problem is almost undetectable if a user sends an e-mail but with more complex actions it may take a little bit longer than preferred. [...] In this article I would like to make an attempt to present a solution to the very annoying everyday problem that probably many programmers came across in their organisations - deadlocks in databases caused by a vast number of requests in relatively short time. The main aim of this text is to introduce RabbitMQ, which I value as a very functional and practical message broker, to help you solve the queuing problems and decrease the amount of work you would otherwise have to spend on it.

He talks about why message brokers are even needed and how to pick the right one for your project. Then he gets into the "in practice" part of the article, showing the use of RabbitMQ through PHP to save various data to a database when a user is presented with an advertisement. He shows how to create both the producer and consumer objects, making interaction with the queue simpler. His examples are all using the php-amqplib by Alvaro Videla.

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rabbitmq introduction library tutorial message broker producer consumer

Link: http://piotrpasich.com/rabbit-behind-the-scenes/

NetTuts.com:
Five Hidden Gems of Laravel
August 22, 2014 @ 11:51:20

The NetTuts.com site has posted a list of their five hidden gems in Laravel, a popular PHP framework. They look at a wide range of these "hidden" features that can help make your Laravel experience even better.

Many developers who use Laravel are probably only barely scratching the surface of what the framework has to offer. While the documentation does cover the most common use cases and the obvious features, it doesn't cover everything. Don't get me wrong, the documentation is fine, it's just that there's so much you can do, it's hard to document everything. Because of that, we're going to take a look at some of the hidden gems that lurk within Laravel.

The five items on their list come complete with summaries about the feature, when they were added, if they're documented and a code sample with them in use:

  • Cascading Views
  • Collections (with sorting, filtering and pagination)
  • Regular Expression Filters
  • The Message Bag
  • Fluent
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hidden gems laravel framework views collections regex filter message fluent

Link: http://code.tutsplus.com/articles/five-hidden-gems-of-laravel--cms-21907

Rob Allen:
Globally overriding validation messages for ZF2 forms
August 19, 2014 @ 10:46:27

Rob Allen has posted a quick hint about overriding validation messages in a Zend Framework v2 based application. This override is related to the output of a standard form and works globally instead of just on a single form.

One thing that I always do when creating a Zend Framework 2 form is override the validation messages for a number of validators - EmailAddress in particular. I recently decided that I should probably sort this one out once and be done with it. Turns out that it's quite easy assuming that you use the FormElementManger to instantiate your forms.

The post includes all the code you'll need to do the override: a custom validator example, the changes you'll need to make to the configuration and an example of a form that uses the custom handling. He explains each of the parts too, showing how they fit together in your module.

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zendframework2 override validation message form tutorial

Link: http://akrabat.com/zend-framework-2/globally-overriding-validation-messages-for-zf2-forms/

AWS PHP Development:
Receiving Amazon SNS Messages in PHP
April 01, 2014 @ 10:53:14

The Amazon Web Services PHP Development blog has a new post from Jeremy Lindblom showing you how you can receive inbound SNS messages via a webhook on your application.

Amazon Simple Notification Service (Amazon SNS) is a fast, fully-managed, push messaging service. Amazon SNS can deliver messages to email, mobile devices, Amazon SQS queues, and HTTP/HTTPS endpoints. [...] Though you can certainly subscribe your email address to receive SNS messages from service events like these, your inbox would fill up rather quickly. There is great power, however, in being able to subscribe an HTTP/HTTPS endpoint to receive the messages. This allows you to program webhooks for your applications to easily respond to various events.

Using the AWS SDK for PHP you can set up a listening script that can receive the message and handle subscription confirmations, message signature validation and handling the notifications.

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amazon aws sns message receive webhook sdk

Link: http://blogs.aws.amazon.com/php/post/Tx2G9D94IE6KPAY/Receiving-Amazon-SNS-Messages-in-PHP

SitePoint PHP Blog:
Piping Emails to a Laravel Application
February 17, 2014 @ 09:13:48

On the SitePoint PHP blog there's a new tutorial posted about piping emails to Laravel (well, a Laravel-based application). He shows how to have your application take data in from the current input, parse it and insert the data into a database.

In project management or support management tools, you will see this a lot: you can reply to an email message and it is automatically visible in a web application. Somehow, these tools were able to get those email messages right into their system. In this article, we are going to have a look at how we can pipe emails to our Laravel 4 application.

He walks you through the creation of an Artisan command, "email.parse", and using the PHP MIME Mail Parser library to extract data. He gets the to, from, title and message contents from the email and shows how to work with attachments too. Finally, he shows how to set up the mail server to pipe the incoming email though the PHP script for parsing.

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email parse message laravel tutorial mail server

Link: http://www.sitepoint.com/piping-emails-laravel-application/

Suresh Ariya:
Implement Flash Messages using Session in PHP (Part 1 & 2)
February 06, 2014 @ 11:08:55

In a two part series on his site Suresh Ariya shows you how to implement "flash messages" in your applications (in a framework-agnostic way) with the help of a custom script and the current user's session.

As part of the post series, today we are going to see how we can implement Flash Messages using PHP Session. Before proceeding into that, first i like to explain what is Flash Message and its usage. [...] Flash message is a message that will be shown/displayed only once. if you reload the browser or navigated to other pages and came back, you won't see the same message displayed again.

In part one he introduces the concepts behind flash messaging and gets into the initial steps of the implementation via a "FlashMessageInterface" to define the structure. In part two he gets into the actual implementation and shares a script that uses a custom prefix to define the messages and the expected getter/setter methods as well as "clear" functionality.

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flash message series part1 part2 implementation interface

Link: http://sureshdotariya.blogspot.in/2013/12/implement-flash-messages-using-session.html


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