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When developing a Web application, it's standard practice to create a database structure on which server-side code is placed for the logic and UI layers. To connect to the database, the server-side code needs to do some basic creating, updating, deleting, and — most importantly — reading of records.

SPARQL — Simple Protocol and RDF Query Language

Why move from SQL to SPARQL? There are many reasons why you would want to move from SQL to SPARQL. The details extend beyond the scope of this article, but you could be motivated by the following points: You want a more distributed data solution. You want to expose your data on the Web for people to use and link to. You may find Node-Arc-Node relationships (triple) easier to understand than relational database models. You may want to understand your data in a pure object-oriented fashion to work with an OOP paradigm (PHP V5 and later supports OOP). You want to build generic agents that can connect to data sources on the Web.

1. Use PHP Only When You Need it – Rasmus Lerdorf

PHP was created out of a need to solve web development problems

Lerdorf is the first to admit that PHP is really just a tool in your toolbox, and that even PHP has limitations.

In PHP, all variables are local in scope unless declared as global. JavaScript is opposite, and all variables are global unless declared with the var keyword.

Both PHP and JavaScript are loosely typed

JavaScript is a bit mixed concerning undeclared variables, if you attempt to modify or compare with an undeclared variable, the script will break entirely, but you can check the variable status using typeof() or in conditional statements containing only that variable.

Il m'a signalé deux projets de BDD, qui permettent de faire le pont entre les demandes de tests fonctionnels, émis par des clients non-techniques, et les tests unitaires. Il s'agit de greenpepper (http://www.greenpeppersoftware.com/en/, Open Source et commercial ) et easyb (http://www.easyb.org/, logiciel libre).

Ces deux logiciels permettent de capturer les tests fonctionnels : on note les demandes de tests, puis on les convertis en un pseudo-langage. Une fois celui-ci écrit, le logiciel produit des tests fonctionnels à faire passer, et à exécuter automatiquement. Le concept est une couche qui ressemble aux tests unitaires, mais prend le problème à partir des clients, et non plus à partir des besoins de tests des couches base. Le concept est prometteur, notamment en conceptualisant les tests et les demandes clients, même si elles sont peut claires. Je me promets d'y consacrer un peu de temps.

I was always able to find help with almost anything PHP related that I needed. It wasn’t the ‘cut and paste’ kind of help, it was the ‘detailed explanation’ kind of help.

it is becoming increasingly more difficult to learn PHP

Beginners nowadays are being hit over the head with grandiose concepts such as ‘dependency injection’ and ‘favouring composition over inheritance’ which really have nothing to do with PHP itself.