History: Requirements

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Preview of version: 91

Requirements and Setup

This page lists the minimum requirements for installing Tiki.

If you are using standard shared hosting, you can assume that the requirements are met, as Tiki is designed to run on shared hosting, using the LAMP stack. The instructions below are useful for people that are configuring a server for Tiki.

Requirements and Setup
- Requirements
- Optional Software or Libraries
Alias

Requirements

Webserver

Tiki is developed and widely tested with Linux and Apache. However, Tiki should run on any webserver that supports PHP, like Windows/IIS, lighttpd etc. but you should expect to need to tweak things. Please see the Windows compatibility project.

Your webserver should be configured with the following minimal requirements:

512 MB RAM
100 MB free storage

Database

Tiki requires an active relational database connection. The database can be installed in the same physical location of the webserver (localhost). It can also be a remote database. Tiki is developed and tested mainly on MySQL databases:

MySQL 5 or higher (require for Tiki3 or higher)
MySQL 4.1 or higher

Possible but not recommended databases

PostgreSQL (doesn't work with Tiki3 or Tiki4, but work is ongoing to fix for Tiki5)
SQLite (doesn't work with Tiki3 or Tiki4, but work is ongoing to fix for Tiki5)
~~Oracle~~ (abandoned)
~~Sybase~~ (abandoned)
~~MSSQL~~ (abandoned)

For an idea of the issues: http://dev.tikiwiki.org/Database+independence

PHP

Tiki version 3 (or later) requires PHP 5 with the MySQLi extension.
Tiki version 4 (or later) prefers PHP 5 with the PDO extension. You can revert back to ADOdb if PDO is not available.

Note on PHP Memory Limits: some ISP's install PHP with a memory_limit = 8m. While Tiki may install, and initially appear to work fine, when faced with even a slight load, this limit will be easily passed and the system will constantly fail: pages will not load properly, odd errors will occur etc. To check this limit, try yourdomain.com/tiki-phpinfo.php . Run that and search for three values on your ISP’s server:

max_execution_time = 60 ; Maximum execution time of each script, in seconds
max_input_time = 60 ; Maximum amount of time each script may spend parsing request data
memory_limit = 32M ; Maximum amount of memory a script may consume

This limit is not generally user manageable so you must rely on the kindness of your ISP to grant you more resources. On a busy shared server that will also mean that all other PHP users on that shared server will also be granted those resources.

More information

[+]

Libraries
libxml must be enabled	http://us2.php.net/manual/en/ref.xml.php
mbstring is a plus if you work with a language that needs it	http://us2.php.net/manual/en/ref.mbstring.php
ctype must be enabled for tw >=1.10

We recommend using the following configuration in your php.ini file:

PHP.INI setting	Description
memory_limit = 32M	Specify the maximum memory for PHP scripts.
file_uploads = On	Required to allow uploads (files, images, etc.) to your Tiki
upload_max_filesize = XXM	Specify the maxium upload filesize (in MB).
allow_url_fopen = On	Allow trackback pings in your Tiki blogs.
session.save_handler = files session.save_path = /tmp	The path that PHP stores session information. Ensure that the location exists and is writable. In Shared Hosting environments, if you do not have access to /tmp, use temp (no slash) instead.
max_execution_time = 60 max_input_time = 60	Specify the idle timeout (in seconds). If you experience timeouts (such as when performing Admin functions) you may need to increase these settings.
magic_quotes_gpc = Off	Turn off PHP's Magic Quotes function.
default_charset = "utf-8"	Specify the default charcter encoding.
mbstring.func_overload = 0	Will not work properly with mbstring.func_overload = 7

The location of the php.ini file may vary, depending on your operating sytem. Some common locations include:

/etc/php.ini
/etc/php/php.ini
/etc/php4/php.ini
/etc/php/apache1-php4/php.ini (Gentoo)
/etc/php/cli-php4/php.ini (Gentoo)
/etc/php4/apache2 (Debian)
\windows\system\php.ini (Windows)

Notes:

PHP 4.1.2 has a known session bug and should not be used.
you may also need the php-devel package being installed (and restarted apache) to get past the "blank screen issue" of tiki-install.php. (See forum article about that). Prior to it please check, that you have enabled the proper database in your php.ini.
If safemode is on you can need safe_mode_allowed_env_vars = TZ in php.ini
To run PHP5 on 1and1.com just put the following line in your _htaccess file (Tiki 3.X):
AddType x-mapp-php5 .php
AddHandler x-mapp-php5 .php
uncomment ligne 29 and 30 then rename in .htaccess

Optional Software or Libraries

Some Tiki feautures require the following additional software or libraries:

Feature	Additional Requirements
Image processing, used for thumbnail generation, dynamic chart generation, and to prevent bot/automatic registration.	Use either GD Library 1.5 (or higher) or ImageMagick. ImageMagick is included, by default with PHP 4.3+
Manage and display maps as a GeoCMS (Geospastial Content Management System).	Mapserver 4.6+
Rewrite Tiki's default URLs	Use the Apache Clean URLs to create shorter, or custom, URLs.

Alias

Requirements and Setup

History

Information	Version
Tue 18 Aug, 2026 19:46 UTC bienvenu ushindi Group Tiki 30 with versions sharing the same requirements	294	View
Mon 17 Aug, 2026 20:05 UTC bienvenu ushindi Revise the mariadb minimum version for tiki 30	293	View
Tue 17 Mar, 2026 19:48 UTC bienvenu ushindi Add tiki30 constraints	292	View
Thu 09 Oct, 2025 14:31 UTC Bernard Sfez / Tiki Specialist	291	View
Thu 02 Oct, 2025 07:38 UTC Bernard Sfez / Tiki Specialist	290	View
Thu 02 Oct, 2025 07:32 UTC Bernard Sfez / Tiki Specialist	289	View
Sat 19 Apr, 2025 09:46 UTC Marc Laporte The requirements don't change for Tiki 27, 28 and 29. We don't know yet for 30	288	View
Fri 25 Oct, 2024 17:24 UTC Rodriguez Nyiringabo	287	View
Fri 25 Oct, 2024 17:23 UTC Rodriguez Nyiringabo	286	View
Fri 25 Oct, 2024 17:19 UTC Rodriguez Nyiringabo	285	View
Wed 02 Oct, 2024 13:21 UTC Marc Laporte Why it's OK. We are using for a huge project.	284	View
Fri 19 Apr, 2024 07:55 UTC Merci Jacob	283	View
Thu 18 Apr, 2024 16:07 UTC Marc Laporte	282	View
Thu 18 Apr, 2024 15:34 UTC Marc Laporte	281	View
Thu 18 Apr, 2024 15:32 UTC Marc Laporte ok, we decided	280	View
Sun 17 Mar, 2024 01:54 UTC Marc Laporte 8.3 should be fine as well	279	View
Sat 09 Mar, 2024 15:22 UTC drsassafras	278	View
Sat 09 Mar, 2024 04:12 UTC Marc Laporte	277	View
Sat 09 Mar, 2024 02:55 UTC Marc Laporte There was a mismatch	276	View
Fri 01 Mar, 2024 14:14 UTC Marc Laporte Expected to be OK until PHP 9.0	275	View
Sun 11 Feb, 2024 23:36 UTC Marc Laporte	274	View
Wed 31 Jan, 2024 08:58 UTC rjsmelo	273	View
Wed 31 Jan, 2024 08:57 UTC rjsmelo Update requirements for Tiki 27	272	View
Sun 08 Oct, 2023 08:11 UTC Marc Laporte 2023	271	View
Sun 08 Oct, 2023 08:06 UTC Marc Laporte	270	View
Fri 06 Oct, 2023 01:34 UTC Kevin Doyle tiki26 is released added strike through	269	View
Sun 03 Sep, 2023 19:18 UTC Marc Laporte	268	View
Thu 15 Jun, 2023 21:51 UTC Marc Laporte	267	View
Thu 18 May, 2023 21:48 UTC Marc Laporte	266	View
Fri 12 May, 2023 18:42 UTC Marc Laporte Burn the bridges!	265	View
Sat 06 May, 2023 19:56 UTC Marc Laporte	264	View
Thu 27 Apr, 2023 18:56 UTC Marc Laporte Adding projections as of now	263	View
Sat 25 Mar, 2023 18:40 UTC Marc Laporte Adding Percona Server for MySQL, which is a "a free, fully compatible drop in replacement for Oracle MySQL."	262	View
Thu 23 Mar, 2023 20:28 UTC Marc Laporte	261	View
Fri 03 Mar, 2023 03:19 UTC Marc Laporte Better link	260	View
Fri 18 Nov, 2022 03:15 UTC Marc Laporte This has been retired	259	View
Fri 18 Nov, 2022 03:14 UTC Marc Laporte	258	View
Fri 18 Nov, 2022 03:12 UTC Marc Laporte Update DB info	257	View
Fri 18 Nov, 2022 03:08 UTC Marc Laporte	256	View
Wed 16 Nov, 2022 05:53 UTC Marc Laporte Bye maketoc	255	View
Wed 16 Nov, 2022 05:15 UTC Marc Laporte Redoing edits I had done on duplicate page	254	View
Wed 16 Nov, 2022 04:48 UTC Marc Laporte Putting page in English	253	View
Mon 18 Apr, 2022 13:41 UTC Torsten Fabricius Danish Seems to work now: 'Krav og Opsætning' = 'Requirements and Setup', whilst the text is still in English. Sorry.	252	View
Mon 18 Apr, 2022 13:38 UTC Torsten Fabricius now changing the name to danish title (krv = requirement(s) ) and regenerate a new english page version ... if that works	251	View
Mon 18 Apr, 2022 13:26 UTC Torsten Fabricius	250	View
Mon 18 Apr, 2022 13:24 UTC Torsten Fabricius Still trying to change the language for this page to English ... the system states there would be an English version exist, which I do not find. Now this page is Danish ... at least	249	View
Mon 18 Apr, 2022 10:41 UTC Torsten Fabricius just formatted and added {maketic} - no content change today - still not getting english laguage for the page	248	View
Mon 18 Apr, 2022 10:36 UTC Torsten Fabricius fix auto-Jumbotron, try to set language=English to the page	247	View
Mon 21 Feb, 2022 03:16 UTC Marc Laporte	246	View
Thu 06 Jan, 2022 06:04 UTC Marc Laporte It is better explained on the Tiki24 page	245	View

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Tiki Roundtable Meeting - September

Open Source solutions

History: Requirements

Preview of version: 91

Requirements and Setup

Table of contents

Requirements

Webserver

Database

Possible but not recommended databases

PHP

More information

Optional Software or Libraries

Alias

History

Related Video "Features and Options in Tiki"

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Tiki Roundtable Meeting - September

Open Source solutions

History: Requirements

Preview of version: 91

Requirements and Setup

Table of contents

Requirements

Webserver

Database

Possible but not recommended databases

PHP

More information

Optional Software or Libraries

Alias

History

Related content

Related Video "Features and Options in Tiki"