This entry focuses on how to identify slow parts of your scripts using the PHP/Xdebug profiling feature along with KCacheGrind for profile data visualisation. Xdebug is a PHP extension used for debugging scripts, supporting stack and function traces and information and memory allocation profilling. KCacheGrind is a profile data visualisation tool, allowing for easy browsing of […]
Previously I wrote about how to create a multi user git server on FreeBSD using standard UNIX file permissions, allowing users that belong to the same group to read and write from and to the same repository. But what happens when some users outside the group, should only read, while others should also write? Standard file […]
This entry describes the Symfony2 directory structure; providing a broad understanding of how a project is structured, and laying the ground for file system level security and customization. Below are diagrams for each main folder, along with a description of its components (based on: http://symfony.com/doc/current/quick_tour/the_architecture.html): app/ folder: AppKernel.php – Main configuration entry point. Provides registerContainerConfiguration and registerBundles. […]
In the previous entries, found here and here, I wrote about how to enable browser to server communication, using Node.Js and Socket.Io and how to emit events and return responses. In this entry I will describe how to route those events among different connected browsers, and how to create a basic chat application using Sencha […]
This entry shows how to create desktop applications for the Raspberry PI with a GUI written in JavaScript and rendered using the Java SWT Browser widget. Use this model to benefit from Rich Internet Applications and access device hardware and software resources by creating custom JavaScript functions. The assumptions are that your device is running […]
Below is a list of packages required for Symfony2 running on FreeBSD 10. pkg install php56 pkg install mod_php56-5.6.3 pkg install php56-session-5.6.3 pkg install php56-ctype-5.6.3 pkg install php56-dom-5.6.3 pkg install php56-hash-5.6.3 pkg install php56-mysql-5.6.3 pkg install php56-simplexml-5.6.3 pkg install php56-json-5.6.3 pkg install php56-xml-5.6.3 pkg install php56-hash-5.6.3 pkg install php56-pdo_mysql-5.6.3 pkg install php56-tokenizer-5.6.3 Replace 56 with […]
As part of my learning process about Agile Methodologies, I am adding a few notes about Agile in general and some of its methodologies in particular. Part of a series of posts, the first entry is about the Agile Manifesto and Principles. This and the following entries rely on the ‘Agile Software Development Ecosystems’ book, […]
Classic AJAX requests are limited to the same domain. JSON with padding allows us to make requests to different domains. Below is an example of how to create a jsonP class, and handle requests using PHP. JSON with padding works by making a JavaScript script request, using a SCRIPT tag and a callback function. The back […]
Playing with my Raspberry PI and its GPIO over the weekend it occurred to me I would be able to control it in real time from a browser, using Socket.IO and pi-gpio. Here is a link to my Github code for doing so: https://github.com/fgheorghe/jsGPIO. The JSGPIOServer module creates an HTTP server handling Socket.IO events, producing […]
According to Ken Schwaber, co-creator of Scrum: “You can’t predict or definitely plan what you will deliver, when you will deliver it, and what the quality and cost will be”. Scrum is focused on delivering working software regularly, monitor features delivered and adjust plans according to the results. Unlike XP, which puts more emphasis on […]