|Initial release||July 2001|
3.2.1 / March 2018, 16
|Type||Content Management System|
|License||GNU General Public License|
The software is designed for easy setup, use and maintenance, and is used in public and private institutions[which?]. The last P in the word SPIP stands for both Partagé (shared) and Participatif (participative), in the sense that the software is designed for collective online editing. Its mascot is a flying squirrel.
It is used both by institutional sites, community portals, academic sites, personal webpages, and news sites.[which?]
The pages of the site are generated 'on the fly': the contents stored in the database are formatted through presentation 'skeletons' that merge HTML and SPIP's own markup language. A caching system avoids the generation of pages at each request: when a page is requested, SPIP checks if it doesn't exist in its cache and if it isn't too old, it will be displayed. The life-span of a page is adjustable in its presentation skeleton.
SPIP was originally conceived for the uzine.net site, after which its designers released it under GPL License. Since its launch 2001, it has also been used for Le Monde diplomatique newspaper and www.vacarme.eu.org; the webmaster of Le Monde diplomatique is one of the initiators of SPIP,
SPIP integrates a cache mechanism, an authentication system, an automatic setup module and an interface for administration and input of articles. SPIP can create dynamic pages without any PHP knowledge, using a web template system known as 'skeletons.
In early 2003, the 1.6 version made it possible to display the private back-end interface in several languages. A space for translators is set up in order to multiply the number of available versions.
In April 2005, the private interface of version 1.8 was reworked in order to take into account an analysis of ergonomic processes[clarification needed]. An important modification for developers is SPIP's core that now benefits from a new compiler. It then becomes possible to elaborate skeletons with more complex functionalities without requiring any coding work in PHP.
Other re-workings are currently under way, such as the reworking of the private interface in the form of skeletons.
The 1.9.1 version introduced a template system, akin to Wikipedia.
The 1.9.2 version modified the directory structure to allow a better mutualisation of sources.
The 2.0 version supports multiple SQL databases, and introduces easy skeletons for web forms.
The 2.1 version builds on the concept of modules, along with improved security and stability, a new interface for plugins management, and other features.
The 3.0 major version was released on 19 May 2012:, completely redesigned towards a higher degree of modularity. All non-core functionalities are now implemented as plugins. The private area has been thoroughly rewritten in order to make the editorial objects as generic as possible[clarification needed]. It's designed to be easier and quicker to create new editorial objects and to customize existing ones. The new DATA loop allows SPIP to connect to any kind of data (not only SQL tables). These data may be found locally (XML, CSV, YAML files, enumerations...) or directly on an URL (list of YouTube videos, Flickr photos, Google spreadsheets, online calendar...). So the web itself may be used as a database.
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