Manual:Installation requirements/it

Oltre al software stesso, un'installazione standard di MediaWiki necessita:


 * Un web server per inviare le pagine al browser.
 * PHP per far girare il software
 * Un database server per archiviare dati e pagine.

In aggiunta, ci sono varie dipendenze opzionali richieste se si vuole un certo livello di contenuto.

Se il tuo sito è sotto un host, contatta l'hosting per assicurarti che sia installato.

= == Simple one-download installation == =

Use XAMPP from http://www.apachefriends.org to install and configure all of the important packages – Apache web server, PHP, and MySQL database – with only one download. It is available for Linux, Windows, Mac and Solaris. As of August 2015, the latest version of XAMPP includes PHP 5.6.12 (MediaWiki requires at least ).

= == Web server == =

Per passare le pagine al browser, MediaWiki necessita di un web server. Often you will not have a choice of which software to use – it will be the one provided by your hosting provider.

Most installations use the Apache web server, available at the official download page. However, MediaWiki has also been tested under IIS 7.0, Cherokee, Hiawatha, LiteSpeed, nginx (configuration example), and lighttpd.

= == PHP == =

PHP è il linguaggio di programmazione in cui è scritto MediaWiki ed è richiesto per far girare il software.

Nota che sebbene MediaWiki abbia uno script di installazione che provvede l'installazione di base, per configurazioni avanzate è richiesto un minimo di conoscenza del PHP.


 * Per l'ultima versione di MediaWiki, è richiesto PHP 5.3.2 o successivo
 * Se non riesci ad aggiornare PHP, puoi usare MediaWiki, che richiede PHP 4.3.0 o successivo.
 * The following extensions are required:
 * Perl Compatible Regular Expressions (PCRE) (v4.0+, MediaWiki 1.23 requires PCRE 7.2+ which may not be available in earlier PHP packages)
 * Session
 * Standard PHP Library
 * JSON (since 1.22).

In most Debian/Ubuntu-based distros, this is in the php5-intl package.
 * Note that all of these are enabled in PHP by default.
 * MediaWiki's installer will warn if you don't have the optional PHP intl extension "to handle Unicode normalization".
 * On most Debian/Ubuntu-based distros, either the php5-mysql or php5-mysqlnd package is required if you want MediaWiki to use MySQL.
 * If you are installing MediaWiki on CentOS 5.6, use the php53 package instead of php. The php package contains PHP 5.1.x, which is not compatible with the latest version of MediaWiki.
 * If you are installing MediaWiki on Red Hat Enterprise Linux 6.4 (CentOS 6.4), you will need to install the php-xml package in addition to the normal php package.
 * Some features of MediaWiki may require PHP functions that execute external processes, like image thumbnailing, that some cheap hosts usually disable. This has surfaced specially in MediaWiki 1.23 on file uploads . Please take this into consideration if you plan to install MediaWiki on a shared host.
 * MediaWiki extensions may require additional PHP features, e.g. VisualEditor requires libcurl support (php5-curl on Debian/Ubuntu-based distros).

If you need to compile PHP from source, then see PHP configuration for compilation options that affect MediaWiki.


 * Alcuni server potrebbero necessitare il modulo database e il modulo session management. Vedi le istruzioni del sistema.
 * Se lo installi su windows usando il Microsoft installer, aggiungi l'estensione del tuo database (MySQL or Postgres) nei contenuti da installare.

= == Database server == =

MediaWiki archivia tutto il testo ed i dati in un database, che sia capace di condividere i dati con altre applicazioni web come PHPBB. Ti serve uno dei seguenti database per poter far girare MediaWiki:


 * MySQL 5.0.2 o successivo
 * PostgreSQL 8.1 o successivo (supportato da MediaWiki 1.8) Vedi Manual:Installing_MediaWiki/it per ulteriori dettagli.
 * SQLite 3
 * Oracle (Oracle is currently unsupported on the latest MediaWiki versions due to open blocking bugs)

Alcuni utenti trovano utile installare un software package come phpMyAdmin (MySQL) o phpPgAdmin (Postgres) per aiutare l'amministrazione del database.

MySQL 5 has been required since MediaWiki 1.19. MySQL 4 was required starting with MediaWiki 1.6. (If you are using an ancient version of MySQL and cannot upgrade then you need to use MediaWiki 1.5.8, but this version is not supported.)

= == Hardware requirements == =

The recommended minimum requirements are 256MB of RAM for a single-computer website and 85MB of storage, although this will not suffice for a busy public site or a site with uploading enabled. Some users have reported running MediaWiki on computers with as little as 48MB of RAM.

The install size can be reduced to around 50Mb for a developer install and to around 26Mb for a non-developer, end-user install. See Manual:Reduce size of the installation

= == Optional dependencies == =

Other software

 * ImageMagick or GD is required for image thumbnailing.
 * TeX is required for inline display of mathematical formulae. In most Debian/Ubuntu-based distros, this is in the texlive package.
 * Sendmail is required in order for the system to be able to send e-mails.
 * Shell access is required to run maintenance scripts; upgrading MediaWiki may be more difficult without it.

For further information about the above items, see Manual:Installing third-party tools.

VisualEditor
The VisualEditor extension (and also the Flow extension) requires the Parsoid web service, which is implemented using Node.js. Node.js is not provided by most shared-hosting companies (HostGator, Bluehost, Dreamhost, etc.). For performance and security reasons, it is better to use a dedicated hosting solution such as a Virtual private server ("VPS").

Scribunto
If you want to invoke Lua modules (see those on this wiki) from wiki pages and templates, your wiki will also require Scribunto.