Optional Technical Requirements
From Joomla! Documentation
Optional Requirements for Joomla! 4.x[edit]
This page lists optional technical requirements which are not required to install and run Joomla! but are required for some 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 | ||
| Requires PHP's ext/fileinfo | ||
| 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 | |
| PHP Memory | ||
| memory_limit | This sets the maximum amount of memory in bytes that a script is allowed to allocate. This helps prevent poorly written scripts for eating up all available memory on a server. For Joomla, the use of a minimum of 128M of memory is recommended. | |
| OPTIONAL IMPROVEMENTS | ||
| String | ||
| mbstring | Enable PHP's ext/mbstring for the phputf8 library to use native functions | |