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Vincent Composieux:
Run a Symfony application using Docker and docker-compose (English)
April 30, 2015 @ 10:53:48

Vincent Composieux has put together a new tutorial showing you how to get a Symfony2 application up and running inside of a Docker virtual machine for development and testing.

Why boot a full virtual machine when you can only run Docker containers of what you need to develop your Symfony applications ? This is one question asked by Jeremy Derusse at his "Docker dans le développement l'intégration continue" talk during Symfony Live Paris 2015. Those slides are really interesting, I invite you to take a look. They demonstrate the power of Docker and docker-compose but are waiting for practice in order to well understand. So I enjoyed a rainy week-end for further study!

He then outlines the components needed for a simple Symfony2 application: Nginx, PHP (well, PHP-FPM), MySQL and, of course, the code for the application. He includes the full contents for the "docker-compose.yml" configuration file to generate this Docker instance. He walks through each of the components it requires and talks about what they contain and how to define each of them as an image. Following this, he creates the containers with a "docker build" and brings it all up and working with one "docker up" command. He also includes a few other helpful commands for getting memory/CPU usage as well as removing all containers and images with a single command.

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Link: http://vincent.composieux.fr/article/run-a-symfony-application-using-docker-and-docker-compose

Luciano Mammino:
Developing a web application with Lumen and MySql
April 27, 2015 @ 08:24:09

Luciano Mammino has a tutorial posted to his site showing you how to create a Lumen application that ties into a MySQL database from start to finish. It's a simple "display a famous quote" application, but it shows the full process you'll need to follow to hook it all together.

Lumen is a new Php micro-framework developed by Taylor Otwell, the same author of the famous Laravel framework. I wanted to give it a try and I am here to share my experimentations. I am not an expert of Lumen (yet), but I think one of the best characteristics of this framework is that it makes really really easy to bootstrap a new project. So to prove this, we will now build a fully functional app backed by a MySql database in less than 30 minutes. Are you ready to start?

His goal is a create a simple application that displays a quote, "randomized" based on the day. He shows you how to set up a new Lumen project, configure the database and create a migration to create the table in MySQL. He also includes the code for the data seeder and the main application routing (just two routes). Finally, he includes the output template and the CSS needed to make the end result look as expected.

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lumen tutorial microframework mysql famous quote application

Link: http://loige.co/developing-a-web-application-with-lumen-and-mysql/

Derick Rethans:
Xdebug 2.3 Shared Secret to Enable Tracing or Profiling
April 07, 2015 @ 11:19:44

Derick Rethans has posted another in his series covering the latest release of the Xdebug debugging tool for PHP, version 2.3. In this new article Derick introduces the "shared secret" handling, a custom string that for the "XDEBUG_PROFILE" that can trigger the the profiler to start.

Xdebug's profiling and trace file capabilities can both be triggered by a cookie, GET or POST variable, as long as you have enabled xdebug.profiler_enable_trigger and/or xdebug.trace_enable_trigger. With these triggers enabled, basically anybody could initiate a profile run, or trace file, by simply sending the XDEBUG_PROFILE or XDEBUG_TRACE cookies with an HTTP request. Although you should not really run Xdebug in production, you can see that this is not an optimal solution. Xdebug 2.3 adds supports for shared secrets for the trace file and profiler triggers through the xdebug.trace_enable_trigger_value and xdebug.profiler_enable_trigger_value.

He points out a browser extension, The easiest Xdebug, that already has support for this new feature. He also mentions two other tools but they have yet to integrate support for these shared secrets (but will soon hopefully): Xdebug halper and xdebug-helper-for-safari .

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xdebug series release secret string tracking enable production extension

Link: http://derickrethans.nl/xdebug-2.3-tracing-profiling-shared-secret.html

Voices of the ElePHPant:
Interview with Morgan Tocker
March 03, 2015 @ 09:02:54

The Voices of the ElePHPant podcast has posted the latest in their series of interviews with PHP community members. In this new episode host Cal Evans talks with Morgan Tocker,

They talk about Morgan's talk at Sunshine PHP 2015 about tuning MySQL queries using some of the built-in tools). He also mentions some of the newer features of the EXPLAIN handling including more information provided and other metadata provided as a part of the output. They also talk about some of the "cost" data associated with different queries and how they effect performance.

You can listen to this latest episode either through the in-page audio player or you can grab the mp3 and listen to it at your leisure. If you enjoy the interview, be sure to subscribe to their feed.

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Link: http://voicesoftheelephpant.com/2015/03/03/interview-with-morgan-tocker/

Derick Rethans:
Questions from the Field Should I Escape My Input, And If So, How?
January 27, 2015 @ 09:22:04

In his latest post Derick Rethans shares his answer to a question he was asked at a recent PHP conference regarding the escaping of input before use in a MongoDB query.

At last weekend's PHP Benelux I gave a tutorial titled "From SQL to NoSQL". Large parts of the tutorial covered using MongoDB-how to use it from PHP, schema design, etc. I ran a little short of time, and since then I've been getting some questions. One of them being: "Should I escape my input, and if so, how?". Instead of trying to cram my answer in 140 characters on Twitter, I thought it'd be wise to reply with this blog post. The short answer is: yes, you do need to escape.

He uses the rest of the post to get into the longer answer, a bit more detail about why you should escape and what kinds of things can be done. He points out that, because of how MongoDB queries are created, SQL injection is much more difficult. He does remind you that superglobals can also be used to send arrays too which could lead to unexpected data input. He gives an example of how this would work and why it would be a problem.

So although MongoDB's query language does not require you to build strings, and hence "escape" input, it is required that you either make sure that the data is of the correct data type.
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escape input mongodb phpbnl15 question answer datatype

Link: http://derickrethans.nl/escape-input.html

Rob Allen:
Setting up PHP & MySQL on OS X Yosemite
October 20, 2014 @ 09:43:36

Rob Allen has posted a quick guide to help you get PHP and MySQL set up on Yosemite, the latest version of Apple's OSX operating system (just released last week).

t's that time again; Apple has shipped a new version of OS X, 10.10 Yosemite. Apple ships PHP 5.5.14 with Yosemite and this is how to set it up from a clean install. However, if you don't want to use the built-in PHP or want to use version 5.6, then these are some alternatives [including the Liip binary package, Homebrew or Zend Server 7.x).

He opts for the Homebrew method, installing it first then getting into the PHP and MySQL packages. This is all done from the command-line, so you'll need to be comfortable there. He includes the commands needed to install PHP, MySQL and Apache along with all configuration changes to make them work together. He also shows how to install Xdebug, PEAR, Composer and the Mcrypt & Intl extensions if needed.

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setup osx yosemite mysql homebrew package install apache intl mcrypt

Link: http://akrabat.com/php/setting-up-php-mysql-on-os-x-yosemite/

NetTuts.com:
How to Build Rate Limiting into Your Web App Login
September 22, 2014 @ 11:12:14

In this new tutorial on NetTuts.com, Jeff Reifman shows you how to build rate limiting into your application to help with issues on your login caused by possible brute force attacks.

Since one of the wealthiest corporations in the world [Apple] didn't allocate the resources to rate limit all of their authentication points, it's likely that some of your web apps don't include rate limiting. In this tutorial, I'll walk through some of the basic concepts of rate limiting and a simple implementation for your PHP-based web application.

He starts with a brief look at how (brute force) login attacks actually work and how that relates to the most common passwords used. He splits out the two main approaches to rate limiting in applications: limit based on failures by username or limiting by IP address. He then gets into the actual code examples, choosing a Yii framework-based application for his illustration. He creates a simple "failed login" database table, shows how to log the attempts and includes a snippet to purge items older than (by default) 120 minutes ago. Finally, he includes the code to check the table and see if the username has too many failures listen and, if so, denies them access.

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rate limiting login application tutorial mysql database

Link: http://code.tutsplus.com/tutorials/how-to-build-rate-limiting-into-your-web-app-login--cms-22133

Rob Allen:
Throw an exception when simplexml_load_string fails
September 09, 2014 @ 09:27:13

In a quick post to his site Rob Allen shares a class that he's created to handle and throw an exception any time that the load from a SimpleXML parsing fails.

I keep having to look up how to stop the warning that are emitted when simplexml_load_string & simplexml_load_file fail, so this time I've written the world's simplest little class to take care of it for me from now on.

His "Xml" class wraps around the SimpleXML functionality and checks to see if the resulting object is false. If it is, it uses some internal error handling to fetch the error message result and throws it as a "RuntimeException". This error string comes from a "getXMLErrorString" function that uses the libxml_get_errors function to get the resulting error list.

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simplexml load string file fail exception error handling

Link: http://akrabat.com/php/throw-an-exception-when-simplexml_load_string-fails/

SitePoint PHP Blog:
PINQ - Querify Your Datasets - Faceted Search
August 26, 2014 @ 10:58:22

The SitePoint PHP blog has continued their series showing the use of the PINQ library for PHP (a PHP implementation of the LINQ tool). In part one they introduced the tool and showed how to it could be used to query and sort data. In this second part they move on and show how to perform a multi-faceted search on data from a MySQL database.

We are not going to cover the full aspect of faceted search in this series. Interested parties can refer to relevant articles published on Sitepoint and other Internet publications. [...] Unfortunately, faceted search is not a built-in feature provided by MySQL yet. What can we do if we are using MySQL but also want to provide our users with such a feature? With PINQ, we'll see there is an equally powerful and straightforward approach to achieving this as when we are using other DB engines - at least in a way.

Building from the code from the first part of the series, they create a few more simple routes that let you define the different facets to use for the searching/sorting. He creates a custom facet class that uses the "traversable" handling of the PINQ to do the data manipulation. He creates a few different facet objects, each creating a customized filter. finally, he ties it all back into the endpoint and includes the updated markup to show the results. He finishes up the post mentioning a few limitations and improvements that could be made on the example as well.

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pinq query dataset mysql faceted search tutorial series part2

Link: http://www.sitepoint.com/pinq-querify-datasets-faceted-search/

SitePoint PHP Blog:
How to Create a Unique 64bit Integer from String
August 14, 2014 @ 12:55:33

In the latest post to the SitePoint PHP blog Vova Feldman shows you how to create an integer from a hash string that's both 64 bit and unique each time it's generated.

PHP provides the popular md5() hash function out of the box, which returns 32 a hex character string. It's a great way to generate a fingerprint for any arbitrary length string. But what if you need to generate an integer fingerprint out of a URL?

He describes the real-world situation he was facing - a rating widget that needed a randomized integer based on the page using it - and the two "sub-challenges" that make it up: url canonization and the string to unique 64 bit problem. He tackles each problem and shares code snippets showing the process and how it can be put to use. He also includes some interesting metrics at the end of the post showing the level of hash collisions (hint, it's a very low number).

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Link: http://www.sitepoint.com/create-unique-64bit-integer-string/


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