Requirements

Diem 5.0 is based on symfony 1.4 and Zend Framework 1.9.
It will only run on a Unix server with apache2 & PHP >= 5.2.4 or php 5.3.x

Required

Configuration	Required	Info
Server	Unix	Windows server is not tested yet and will probably not work
PHP version	>= 5.2.4	PHP 5.3 is now tested, and it works
PHP C.L.I.	ON	A php command line interface is required during installation and maintenance of the project
memory_limit	>= 48Mo	Diem front pages require less than 16Mb. But sometime, when an administrator performs modifications, Diem needs more memory. Page synchronization, search index update and image resizing may require 48Mo
pdo_mysql or pdo_pgsql or pdo_sqlite	ON	Diem supports MySQL, PostGreSQL and SQLite
json	>= 1.0	json_encode is used to communicate with JavaScript
gd	ON	GD is heavily used to resize front images and provide admin graphs

Recommended

Configuration	Recommended	Info
APC	ON	Diem will use APC if present to store all kind of cache, and dramatically improve performances. If APC is not available, file cache will be used instead
graphviz	ON	if graphviz is installed on your server, Diem will be able to generate dependence and database diagrams
upload_max_filesize	>= 2Mo
mbstring	ON
magic quote gpc	OFF
register_globals	OFF
session.auto_start	OFF
pcre	ON	Used by Zend_Search_Lucene
token_get_all	ON
A modern browser	Firefox >= 3, Safari 4, Opera >= 9, Google Chrome	Administrator interface is not yet tested with poor browsers like IE, and will probably not work
PHP != 5.2.9		PHP 5.2.9 broke array_unique() and sfToolkit::arrayDeepMerge(). Use 5.2.10 instead [Ticket #6211]

See also

• The symfony prerequisites page
• The Zend Framework requirements page