The Monty Hall Problem In PHP

24th September 2013

The Monty Hall problem is a counter intuitive problem in probability mathematics that deals with picking the right prize from a set of three doors. The problem is named after the television celebrity Monty Hall and is loosely based on the USA game show Let's Make a Deal.

Drupal 7: WYSIWYG Module Custom CKEditor Configuration

22nd September 2013

The WYSIWYG module in Drupal is a great way of integrating a client side HTML editor (better known as a WYSIWYG editor) into a Drupal site. It supports a variety of different editors, all of which can be configured depending on the input format being used by the user. The ability to incorporate many different content editors into a site using a single module means that the configuration interface for them all is pretty much the same. It also means that it isn't a disaster if a different editor is needed for an existing site.

DrupalCon 2013 Prauge Is Next Week!

17th September 2013
This years European Drupalcon will be held in the Czech Republic city of Prague and tickets are still available. This is the largest gathering of Drupal developers, site builders, project managers and users in Europe and it is always run exceptionally well by the Drupal Association.

Turning Off Apache Basic Authentication For A Single Directory

11th September 2013
When setting up staging sites or similar I often add a simple Apache authentication check in order to stop everyone from viewing the site. This is also useful in stopping search engine spiders from accessing a site with testing content on it, which generally causes trouble. It isn't amazingly secure, but it keeps almost everyone out.

Changing Memory Allocation In Phing

7th August 2013

Running complex tasks in Phing can mean running out of memory, especially when altering or changing lots of files. I was recently working on a image sorting Phing project that sorted images based on EXIF information. The many thousands of files involved, along with the custom target used to extract the EXIF data caused the default available memory to run out quite quickly.

Using Active Contexts In Drupal 7

3rd August 2013

Context is a Drupal module that allows you to set up reactions that fire when certain conditions are met. This might be when a certain path is loaded, or when a particular content type page is viewed, or even on every page on a site. When the conditions are met a number of reactions can be fired, which include placing blocks, setting breadcrumbs, or just adding a class to the page template.

Adding Apache Reporting To Munin

26th July 2013

When you first install a Munin node it will try to install as many plugins as it can so that it can report on different things. For example, if you have a Varnish server running then Munin will detect this and enable the plugins so that it can report on the activity of Varnish. Once you have started getting data through to your Munin server then you can turn on plugins on the nodes to get more data.

Exporting And Importing Munin Graph Data

21st July 2013

When Munin does a data update it stores all of the data from the nodes as a set of rrd files. These files are then picked up by the munin-graph and munin-html programs and turned into the graph images and web pages that you are probably familiar with if you use Munin.

Sieve of Eratosthenes In PHP

5th July 2013

The sieve of Eratosthenes is named after Eratosthenes of Cyrene who was a Greek mathematician who devised a mechanism to find a sequence of prime numbers using a simple algorithm.

Normally, looping through a list of numbers and finding the primes can be an expensive process. The seive of Eratosthenes is one of the most efficient way of working out all of the smaller prime numbers below (below 10 million or so).

Listing Phing Targets In A Project

28th June 2013

Providing a Phing build file along with a project is a good way of allowing automation of certain aspects of the project. The only trouble is that users won't know what's in the build file unless they open it or just run it. You could provide documentation along with the build file so that users know what to use the file for, but a better approach is to list out the targets available in a project. This can be done easily by using the -l (lower case L) or list flag, which will just list the available targets in the supplied build file.