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Dodge the thundering herd with file-based Opcache in PHP7
Aug 31, 2015 @ 11:55:37

The Tideways.io site has posted a tutorial showing you how to "avoid the thundering herd" of incoming requests to your application using a file-based PHP 7 opcode cache to reduce load and increase performance on your site.

In the last blog post about Fine-Tuning Opcache Configuration I mentioned the thundering herd problem that affects Opcache during cache restarts. When Opcache is restarted, either automatically or manually, all current users will attempt to regenerate the cache entries. Under load this can lead to a burst in CPU usage and significantly slower requests.

[...] In Rasmus talk at FrOsCon 2015 (Video at 12:30, Slides), he showed the persistent secondary file-based cache Opcache gets in PHP 7. It can read the generated opcodes from disk instead of having to recompile the code after cache restart. This happens only when the compiled opcaches are not found in shared memory.

They talk about the benefits that this caching can provide, not only to web-based applications but also to command line scripts. There's a mention of possible security issues if an attacker is able to read/write to the cache files (but permissions can help that). The post ends with how to install it on your own PHP 7 instance, using the --enable-opcache-file flag on compilation.

tagged: thunderherd opcode cache problem php7 example commandline

Link: https://tideways.io/profiler/blog/dodge-the-thundering-herd-with-file-based-opcache-in-php7

Learning Drupal 8 from Boilerplate Code
Jul 30, 2015 @ 11:48:06

On the Drupalize.me site they've posted a guide to getting started with Drupal 8 based on the boilerplate code that already comes with the release.

Drupal 8 represents a lot of changes and a steep learning curve for many Drupal developers and themers. While many of these changes are exciting, there are many things to learn just to get started. One way to learn about the code involved with Drupal 8 modules and themes is to take a look at core's modules and themes for examples to follow. Another is to use a code-scaffolding tool like Drupal Console to generate boilerplate code and comments that you can learn from and then customize.

He makes the assumption that you already have a development environment set up and working then helps you install the Drupal Console for use in the rest of the tutorial. You can then use this command line tool to create a new Drupal 8 installation and generate the boilerplate code for a new theme. Finally, they show the creation of the two other related components: a new module and a block plugin instance. These are generate generic code you can use as a reference point for either updating your current Drupal projects or create new ones.

tagged: drupal8 commandline console instance theme plugin block installation

Link: https://drupalize.me/blog/201507/learning-drupal-8-boilerplate-code

SitePoint PHP Blog:
Console Wars – PHP CLI Libraries
Jul 27, 2015 @ 09:32:35

The SitePoint PHP blog has a post that compares some of the major PHP CLI libraries, three of them at least: the Symfony console component, Hoa console and the Webmozart solution.

I have always been a big fan of console commands and I try to provide a command line interface (CLI) as much as possible in most of my PHP projects. In this article, I’ll briefly compare three PHP console command libraries.

He starts with a brief history on each of the libraries, talking about their origins and age. He then talks about the necessary dependencies each requires and the overall complexity of the code they include. Next up is some practical examples putting each to use outputting a simple message back to the user using user input for both the message and output color.

tagged: console commandline library symfony hoa webmozart cli compare

Link: http://www.sitepoint.com/console-wars-php-cli-libraries/

Community News:
Launching Today: The Code Climate Platform
Jun 22, 2015 @ 09:57:56

Code Climate, the popular static code analysis service, has made an announcement that will definitely help make checking your PHP application for quality and security issues easier - the release of the Code Climate Platform. This platform provides, among other things, a command line tool that you can use to run their analysis rules on your own systems.

Today, we’re thrilled to launch the Code Climate Platform − the first open, extensible platform for all types of static analysis. [...] What does this mean exactly? First, we’re open sourcing our analysis tools, including the engines and algorithms we use to evaluate code. We’re also enabling anyone to write static analysis engines that run on our servers by following a simple specification. [...] Finally, using our new Code Climate CLI, you can now run any Code Climate-compatible static analysis on your laptop – for free.

This is a great step forward to helping ensure the overall quality of your codebase and makes it even easier than having to rely on a fully external service for the results. Plus, with the specification you can write rules and customize the checks according to your application or framework of choice. They have a developer program you can register for to find out more information about that.

tagged: codeclimate static analysis tool commandline platform opensource specification developer program

Link: http://blog.codeclimate.com/blog/2015/06/19/code-climate-platform/

SitePoint PHP Blog:
Boxing up your Apps as Phars Quickly and Easily with Box
Jun 16, 2015 @ 08:44:27

The SitePoint PHP blog has a new tutorial posted showing you how to easily package up your application with Box to make phar files without the extra hassle of building them yourself.

In this tutorial, we’ll use Box to package a PHP application into a Phar, in order to make it easily distributable and globally installable via Composer.

For his example he uses the PHP portion of the FolderBuilder project and makes a command-line executable that can return the information for a directory as JSON data. He starts by installing the "box" executable command on a local VM and defines the simple configuration file, a "box.json" with some basic settings. He then clones the FolderBuilder project, updates the configuration for the correct locations and files and executes the "build" command. The result is a phar file that contains the PHP script functionality. He also updates the configuration to make the result executable with a "chmod" setting, removing the need to call it with the PHP command line version. He ends the post showing how to test it out, taking the results and dropping them into FolderBuilder to make sure they're 100% correct.

tagged: tutorial build phar archive easy box commandline tool

Link: http://www.sitepoint.com/boxing-apps-phars-quickly-easily-box/

Installing Magento version 2 on an AWS (Amazon) Free Tier EC2 Instance On LEMP
May 28, 2015 @ 08:58:05

The 7PHP.com site has a tutorial they've recently posted showing you how to get Magnto 2 installed on an AWS instance running LEMP (Linux, Nginx, MySQL and PHP).

This article tries to demonstrate how to setup an AWS (EC2) instance, installing a LEMP stack, preparing the server environment to meet Magento’s requirements and then to finally install Magento v2 using command line approach. [...] I’m presenting in this article something which might otherwise seem to be a daunting approach – but I also see it as an approach which you can later automate by using Docker/Dockerfile for example or even using a Vagrant appliance.

He takes you through the entire process, including the setup of the account and instance on the AWS side, with screenshots along the way:

  • Creating a Free Tier AWS Account
  • Preparing & Configuring your AWS EC2 Instance
  • Creating A Security Group For Our AWS EC2 Instance
  • Creating a PEM file – Key Pairs
  • Creating our AWS EC2 Instance
  • Creating an Elastic IP & Assigning to our EC2 Instance
  • Preparing & Configuring our AWS EC2 Instance
  • Installing Our LEMP Stack
  • The Magento 2 Project Installation Walkthrough
  • Configuring nginx conf file to serve our magento site
  • Creating a database & running The Magento Setup From Commandline

You'll find all the commands, screenshots and output examples you'll need to follow along with the tutorial easily. There's also links to other resources if you're interested in finding out more about the setup.

tagged: commandline magento2 aws ec2 instance install tutorial stepbystep

Link: http://7php.com/installing-magento-v2-aws-ec2-commandline/

Gary Hockin:
Debugging PHP Command Line (with PHPStorm and XDebug)
May 07, 2015 @ 11:47:09

Gary Hockin has a recent post showing how you can debug PHP HTTP requests from the command line using PHPStorm and XDebug. These instructions aren't specific to PHPStorm, however. They can be used in any IDE/editor that supports remote XDebug connections.

At PHP North West I had huge difficulties configuring Xdebug and both my PHP and PHP Storm so they play nice in a CLI environment. So here, for others and almost certainly my future self, is how to do it.

He goes through each step of the setup process assuming that you already have the necessary software installed. He shows how to configure XDebug for remote debugging in the ini configuration, setting up PHPStorm to receive the connection and, finally, adding the "XDEBUG_CONFIG" environment variable to tell PHP to relay the requests back to your waiting IDE.

tagged: remote debugging phpstorm commandline xdebug configure setup environment

Link: http://blog.hock.in/2015/05/04/debugging-php-command-line-with-php-storm/

Michelangelo van Dam:
popen for cli commands and pipes in php
May 05, 2015 @ 10:53:38

Michelangelo van Dam has a quick new post to his site talking about popen and pipes in command-line PHP as an alternative to the "exec" functions PHP provides to make command lines calls.

I got a question today about using commands that pipe output to other commands within PHP applications. There are two functions in PHP that are perfect for the task: popen and proc_open. But when you want to run it as a complete process, you can go about using exec, shell_exec, passthru or system and fiddle with escapeshellcmd. But often this looks messy and not reusable. A better approach would be to use "popen".

He includes a code example of how to use this method, showing a call to a command line tool and piping the results back into a PHP variable for later use. You can find out more about the use of popen in the PHP manual and accompanying examples.

tagged: popen procopen commandline cli pipe result example

Link: http://www.dragonbe.com/2015/05/popen-for-cli-commands-and-pipes-in-php.html

ServerGrove Blog:
Useful Linux command-line tools to work with PHP projects
Apr 24, 2015 @ 11:16:20

The ServerGrove blog has posted a new tutorial with a selection of useful command line tools to help you in working with your PHP applications. None of them are PHP specific but are Unix-based commands that can help in every day development.

Linux provides a lot of interesting command-line tools that we can use when working with PHP projects. In this post we give you some useful commands.

They include examples of commands that can help with:

  • Find all PHP files in the current directory
  • Check the syntax of all PHP files in the current directory
  • Get the size of each Composer dependency
  • Find suspicious PHP files
  • Find files with abstract classes
  • List PHP settings for the xdebug extension
  • Find empty files and/or directories
  • List files currently open by a PHP process

As mentioned, most of the tools themselves are not PHP specific but these example commands do relate to things that are more in a PHP context.

tagged: useful linux commandline tool context example list

Link: http://blog.servergrove.com/2015/04/23/useful-linux-command-line-tools-work-php-projects/

Piotr Pasich:
Ant, composer and code quality tools
Mar 18, 2015 @ 11:33:47

In his latest post Piotr Pasich shares some handy tips (and tools) to help you use Composer to do some of the common tasks you might use Ant or Phing for.

I decided to start with something uncomplicated – a simple solution that could help me solve a prosaic, but annoying issue. For instance, XML format. No, I won’t fight with it. I see it as great and practical, however mostly I don’t need so sophisticated code to cover my needs – the yaml usually fits the purpose. [...] Yet, do I really need this flexibility [of XML configuration] when I use vagrant or docker to maintain the same environment as on the production? For 90% of PHP projects probably I won’t use all of the features of the virtualization tools. I only want to install necessary libraries, check the code quality before committing or introduce fixtures. Most of those points are easily feasible in composer.

He then shows how to execute these checks through the functionality included with Composer to run custom scripts. His example measures the quality of the code based on the results first from a single run of the PHP Mess Detector (phpmd) command. He then extends this with the open source contribution he mentions earlier with his CodeQualityThreshold library allowing not only for more checks (phpmd, phpcs, phpcpd, etc) but also allows you to configure the thresholds for each class if desired. He includes an example of it in action and screenshots of the results.

tagged: ant composer code quality phpmd commandline library codequalitythreshold threshold

Link: http://piotrpasich.com/ant-composer-and-code-quality-tools/