Optional Technical Requirements
From Joomla! Documentation
Sub-requirements for Joomla! 5.x[edit]
This page lists out optional technical requirements which aren't required to actually install and run Joomla! but are required for some dependencies running different internal APIs.
| Application | |
| JApplicationDaemon | Requires PHP's ext/pcntl and ext/posix |
| Archive | |
| BZ2 | Requires PHP's ext/bz2 |
| GZip | Requires PHP's ext/zlib |
| Zip | Requires PHP's ext/zip or ext/zlib |
| Cache | |
| APC | Requires PHP's ext/apc on PHP 5.3 or 5.4, ext/apcu on PHP 5.5 or 5.6, unsupported on PHP 7.x (Note: THIS NEED TO BE CHECKED) |
| APCu | Requires PHP's ext/apcu on PHP 5.3+ |
| CacheLite | Requires the PEAR Cache_Lite package (tested on 1.7.16, will work with 1.8) |
| Memcache | Requires PHP's ext/memcache and a Memcache server (Note: The Memcache extension is not compatible with PHP 7.x) |
| Memcached | Requires PHP's ext/memcached and a Memcached server |
| Redis | Requires PHP's ext/redis and a Redis server |
| Wincache | Requires PHP's ext/wincache (Windows only) |
| XCache | Requires PHP's ext/xcache |
| Client adapters | |
| LDAP | Requires PHP's ext/ldap |
| HTTP/Curl | Requires PHP's ext/curl |
| HTTP/Socket | Requires PHP's fsockopen() function be enabled |
| HTTP/Stream | Requires PHP's fopen() function and allow_url_fopen enabled |
| Cryptography | |
| JCrypt | Requires PHP's ext/mcrypt for all ciphers except the SodiumCipher which requires ext/sodium |
| JKeychain | Requires PHP's ext/openssl |
| Database | |
| Microsoft SQL Azure | Requires PHP's ext/sqlsrv (the PHP 5.x extension only supports Windows, a Linux compatible version of the extension is available for PHP 7.x) |
| Microsoft SQL Server | Requires PHP's ext/sqlsrv (the PHP 5.x extension only supports Windows, a Linux compatible version of the extension is available for PHP 7.x) |
| MySQL | Requires PHP's ext/mysql (unsupported on PHP 7.x) |
| MySQLi | Requires PHP's ext/mysqli |
| Oracle | Requires PHP's ext/pdo with Oracle support (available for 3PD only; the CMS won't run with it) |
| PDO MySQL | Requires PHP's ext/pdo with MySQL support |
| PostgreSQL | Requires PHP's ext/pgsql |
| SQLite | Requires PHP's ext/pdo with SQLite support (available for 3PD only; the CMS won't run with it) |
| Image | |
| Requires PHP's ext/gd | |
| Session | |
| APC | Requires PHP's ext/apc on PHP 5.3 or 5.4, ext/apcu on PHP 5.5 or 5.6, unsupported on PHP 7.x (Note: THIS NEEDS TO BE CHECKED) |
| Memcache | Requires PHP's ext/memcache and a Memcache server (Note: The Memcache extension is not compatible with PHP 7.x) |
| Memcached | Requires PHP's ext/memcached and a Memcached server |
| Wincache | Requires PHP's ext/wincache (Windows only) |
| XCache | Requires PHP's ext/xcache |
| OPTIONAL IMPROVEMENTS | |
| String | |
| Enable PHP's ext/mbstring for the phputf8 library to use native functions | |